YYD Electromagnetic Flowmeter User’s ManualYYD Electromagnetic Flowmeter III Model Specification ofYYD Electromagnetic Flowmeter (AF3 High-precision) – Tube Type YYDG Electromagnetic

YYD Electromagnetic Flowmeter

User’s Manual


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Contents

1 Introduction..................................................................................................................................................................................... 11.1 Safe Use of Electromagnetic Flowmeter............................................................................................................................. 21.2 Warranty............................................................................................................................................................................... 2

2 Operating Instructions..................................................................................................................................................................... 32.1 Check for Model and Specification......................................................................................................................................32.2 Accessories........................................................................................................................................................................... 32.3 Storage Instructions..............................................................................................................................................................32.4 Instructions for Installation Place.........................................................................................................................................3

3 Installation....................................................................................................................................................................................... 43.1 Installation Conditions......................................................................................................................................................... 43.2 Installation Specifications.................................................................................................................................................... 43.3 Installation............................................................................................................................................................................5

4 Wiring.............................................................................................................................................................................................. 94.1 Wiring Instructions...............................................................................................................................................................94.2 Cable.....................................................................................................................................................................................94.3 Wiring Ports........................................................................................................................................................................104.4 Wiring.................................................................................................................................................................................10

4.4.1 Open the Shell Cover.............................................................................................................................................. 104.4.2 Terminal Structure...................................................................................................................................................114.4.3 Connection of Split Type Flowtube and Transmitter..............................................................................................124.4.4 Instructions for Wiring of Power Cable..................................................................................................................124.4.5 Connection of DC Power Supply............................................................................................................................124.4.6 Grounding................................................................................................................................................................124.4.7 Connection of Split Type Flowtube and Transmitter..............................................................................................134.4.8 Connection of External Instruments....................................................................................................................... 134.4.9 Install Shell Cover...................................................................................................................................................15

5 Basic Operation Steps (Introduction of Display Unit)..................................................................................................................165.1 Structure and Functions of Operation Panel...................................................................................................................... 165.2 Operation of Setting Keys..................................................................................................................................................165.3Display Interface and Content.............................................................................................................................................175.4 Display Mode to Setting Mode.......................................................................................................................................... 19

5.4.1 Structure of Menu Structure....................................................................................................................................195.4.2 Display Example: Steps from Display Interface to Parameter Setting Mode........................................................275.4.3 Parameter Setting Mode..........................................................................................................................................28

5.5 Parameter Setting Steps......................................................................................................................................................285.5.1 Setting Sample of Discrete Selection Type Parameter: FLOW Rate unit.............................................................. 285.5.2 Setting Sample of Continuous Selection Type Parameter: 4mACalibration.........................................................305.5.3 Setting Sample of Numeric Data: Instrument Coefficient......................................................................................31

6 Parameter Specification.................................................................................................................................................................346.1 Parameters.......................................................................................................................................................................... 346.2 Parameter List.....................................................................................................................................................................346.3 Summary of Parameter List................................................................................................................................................356.4 Parameter Description..................................................................................................................................................42

7 Alarm Function..............................................................................................................................................................................487.1 Excitation Interruption & Empty Pipe Alarm....................................................................................................................48

8 Actual Operation............................................................................................................................................................................498.1 Zero Setting Before Operation...........................................................................................................................................49


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8.1.1 Use the function of automatic zero setting with key combinations for zero setting.............................................. 498.1.2 Carry out zero setting by input................................................................................................................................50

8.2 Batch Filling Function........................................................................................................................................................528.2.1 Wiring......................................................................................................................................................................528.2.2 Parameter Setting.................................................................................................................................................... 528.2.3 Working Steps......................................................................................................................................................... 52

9 Communication............................................................................................................................................................................. 539.1 Network Connection.................................................................................................................................................... 539.2 Wiring.................................................................................................................................................................................549.3 YYD Electromagnetic Flowmeter Adopts Modbus RTU Communication Protocol........................................................ 54

9.3.1 Query (Computer executes query operation to instrument parameters), command code: 03h..............................549.3.2 Table for Communication Addresses of Parameters...............................................................................................55

10 Overview..................................................................................................................................................................................... 5610.1 Standard Specifications................................................................................................................................................5610.2 Standard Performance.................................................................................................................................................. 5810.3 Normal Operating Environment...................................................................................................................................5910.4 Accessory..................................................................................................................................................................... 59

11 Explosion-proof Instrument.........................................................................................................................................................6011.1 NEPSI...........................................................................................................................................................................60

12 Maintenance and Fault Diagnosis............................................................................................................................................... 6112.1 Daily Maintenance....................................................................................................................................................... 6112.2 Fault Diagnosis.............................................................................................................................................................61

12.2.1 No Indication.........................................................................................................................................................6212.2.2 Zero Point Unstable...............................................................................................................................................6312.2.3 Indication Inconsistent with Actual Flow Rate.....................................................................................................64

Annexes: Reference Flow Rate Range.............................................................................................................................................65


III

Model Specification of YYD Electromagnetic Flowmeter (AF3 High-precision) – Tube Type

YYDG Electromagnetic flowmeter products of Zhejiang Diyuan Instrument Co., Ltd.

Code AF3 Transmitter + flowtube

-B1 DY1000 flange type flowtube (Optional diameter DN8~DN3000)

-B3 DY3000 flange type flowtube (Optional diameter DN8~DN300)

-B4 DY300W sanitary flowtube (Optional diameter DN15~DN150)

-B5 DY300J clamp-on flowtube (Optional diameter DN10~DN200)

Code Power supply

-A AC (85~265V.AC)

-D DC (24V.DC)

-T Battery (3.6V)

Code Nominal diameter

8 DN8

3000 DN3000

Code Output signal

P 4-20mA + frequency output

T 4-20mA + frequency output + RS485 communication output

H 4-20mA + frequency output + HART communication output

G 4-20mA + frequency output + GPRS communication output

Code Lining material

X Rubber (Optional for DY1000 of DN50 and above)

F Polytetrafluoroethylene (PTFE)

P FEP (F46/PFA)

Code Electrode material (Omission of this code indicates the electrode material is 316L)

0 316L

1 Mo2Ti

2 Hc

3 Hb

4 Ti

5 Ta

6 Pt

7 Tungsten carbide

9 Others

Code Electrode type (Option of DN250~DN3000)

G Scraper type electrode

Code Medium temperature

L ≤100°C

H 100°C~140°C

Code Grounding type (Option)

J1 Additional ground ring

J2 Grounding electrode (DN≥15mm)

Code Structural type (X indicates the length of split cable)

Z Integrated type

L(X) Split type

C (X) Immersive (only for split type flowmeter with rubber lining)

Code Explosion-proof

dC Grade IIC ExdeiallCT4~CT6 Gb

dm Grade IIC ExdiambllCT4~CT6 Gb

YYDC -B1 -A 100 P X 2 L J1 Z dC Complete specification model


IV

Model Specification of YYD Electromagnetic Flowmeter (AF3 High-precision) – Plug-in Type

YYDC Electromagnetic flowmeter products of Zhejiang Diyuan Instrument Co., Ltd.

Code AF3 Transmitter + flowtube

-B7 DY100C plug-in type flowtube (Optional diameter DN200~DN3000), AF3 TransmitterCode Power supply-A AC (85~265V.AC)-D DC (24V.DC)

Code Nominal diameter200 DN200

3000 DN3000Code Output signalP 4-20mA + frequency outputT 4-20mA + frequency output + RS485 communication outputH 4-20mA + frequency output + HART communication outputG 4-20mA + frequency output + GPRS communication output

Code Plug-in rod typeS Screw type (It can be replaced online; ball valve DN100, PN16)

Code Electrode material (Omission of this code indicates the electrode material is316L)

0 316L1 Mo2Ti2 Hc9 Others

Code Medium temperatureL ≤100°CH 100°C~140°C

Code Structural type (X indicates the length of split cable)Z Integrated typeL(X) Split typeC (X) Immersive (only for split type flowmeter with rubber lining)

Code Ball valve optionsQ Ball valve installed

Code Explosion-proof optionsdC Grade IIC ExdeiallCT4~CT6 Gbdm Grade IIC ExdiambllCT4~CT6 Gb

YYDC -B7 -A 400 T S O L Z Q dC Complete specification modelNote: YYDC plug-in type electromagnetic flowmeter is installed at cast steel, stainless steel, steel reelpipe andother pipes that can be welded with stainless steel and carbon steel.


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1 IntroductionThe instrument has been fully tested before delivery.

To ensure normal use of the instrument, please read over thismanual and fully understand how to use the instrumentbefore operation.

About this Manual

• This manual must be provided to end users.

• Please read over this manual before use.

• The contents of this manual shall not be changedwithout prior notice.

• Copyright reserved. No part of this manual may beduplicated in any form without the written consent ofZhejiang Diyuan Instrument Co., Ltd.

• The Company tries its best to ensure the correctness ofthe content of this manual. In case of any mistake oromission, please notify Zhejiang Diyuan Instrument Co.,Ltd.

• Zhejiang Diyuan Instrument Co., Ltd. doesn’t shoulderany other responsibilities for the product except thosementioned above.

• If any change in specifications, structure or operatingunits of the product is made without influence on itsoperation and performance, the user’s manual is notrevised with it.

• If a customer or a third party is injured due to the use ofthe product, and such injuries are caused byunpredictable defects of the product, Zhejiang DiyuanInstrument Co., Ltd. will not shoulder any responsibility.The Company will not be responsible for collateralinjury either.

Instructions for Safety and Modification

• The following safety instructions must be followed inall stages of the operation, maintenance and repair ofthe instrument. These instructions or special warningsgiven at other places in this manual must be followed,and failure to do so will be deemed as violation of thesafety standards specified for the design, manufactureand use of the instrument. If a customer fails to meetthese requirements, Zhejiang Diyuan Instrument Co.,Ltd. will not shoulder any responsibility. If theoperating is in violation of this manual, the protectionfunction of the instrument will not be guaranteed.

• Zhejiang Diyuan Instrument Co., Ltd. will not shoulderany responsibility for damage of the instrument due tounauthorized repair.

• The followings are warning signs used in this manualand on the device.

Warning

A warning sign indicates existence of danger. Must payattention to operating steps, operating processes andconditions, or it may cause personal injury or death.

Attention

An attention sign indicates existence of danger. Must payattention to operating steps, operating processes andconditions, or it may cause local or overall damage of theproduct.

Important

An important sign attracts attention of people to avoiddamage to instrument or equipment.

Note

A note sign indicates information required for expressing theoperations and characteristics of the instrument.

Grounding terminal

A ground terminal sign indicates grounding must be providedhere.


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1.1 Safe Use of Electromagnetic Flowmeter

Warning(1) Installation• The installation of the electromagnetic flowmeter must

be completed by professional engineers or technicalpersonnel. Non-professionals are not allowed to performinstallation-related procedures.

• Electromagnetic flowmeter is heavy, so workingpersonnel must prevent the electromagnetic flowmeterfrom falling or being applied with excessive pressure soas not to damage the instrument. When handling anelectromagnetic flowmeter, it shall be handled withtrolley by two persons at least.

• When using the electromagnetic flowmeter to measurehot fluid, the surface temperature of instrument is high,so it shall be used with care to prevent scalding.

• When the measured fluid is toxic, even during theprocess of removing the instrument from pipeline andsending it for repair, working personnel must avoidcontact with the fluid and inhalation of residual gas.

• Please do not apply excessive weight on the instrument.For example: Tread on the electromagnetic flowmeter.

• All installation-related procedures must comply withcurrent national electric operating instructions.

(2) Wiring• The wiring of the electromagnetic flowmeter must be

completed by professional engineers or technicalpersonnel. Non-professionals are not allowed to performwiring-related procedures.

• During wiring, it shall be checked whether the supplyvoltage is within the voltage range required by theinstrument before connecting power cable. In addition,it shall be ensured that the power supply is disconnectedbefore wiring of signal wire and exciting wire.

• Protective grounding terminals must be safelyconnected to terminals with the sign to preventdanger to working personnel.

(3) Operation• The shell cover can be dismantled after the power is

turned off for 10min at least. The shell cover can onlybe dismantled by professional engineers or technicalpersonnel.

(4) Maintenance• The maintenance of the electromagnetic flowmeter must

be completed by professional engineers or technicalpersonnel. Non-professionals are not allowed to performmaintenance-related procedures.

• The maintenance shall be carried out in strictaccordance with maintenance steps specified in themanual. If necessary, please contact with ZhejiangDiyuan Instrument Co., Ltd.

• Take care to avoid deposition of dirt and dust on thedisplay panel glass or data panel. If the panels get dirty,please clean them with dry soft cloth.

(5) Explosion-proof Instrument• For explosion-proof instrument products, strict rules are

specified in terms of instrument structure, installationplace, external wiring, maintenance and repair, etc.Violation of these rules may cause danger.Before operating the instrument, be sure to read Chapter11 “Explosion-proof Instrument”. Instructions inChapter 11 take precedence over other instructions inthis manual.

• Only trained working personnel can use the instrumentin the field.

• Protective grounding must be connected to a groundingsystem that meets international standards.

• When operating the instrument and peripheralequipment at dangerous workplaces, they shall beoperated with care so as not to produce mechanicalspark or cause accidents.

1.2 Warranty

• The warranty period of the instrument is specified in theprice sheet. We will repair the instrument free of chargewhen necessary within the warranty period.

• If the instrument needs to be repaired, please contactwith our sales department.

• If the instrument breaks down, please inform us ofdetails of the problem, failure time, product model andnumber. If possible, please provide diagrams or otheradditional information.

• We will determine whether the repair is free of chargeor to be charged at cost according to the inspectionresult of flowmeter.

The following cases are not covered under warranty:• Damages due to the customer’s negligence or poor

maintenance.• Problems or damages due to violation of relevant

provisions during operation, running and storage.• Problems caused by using or repairing the instrument at

a place not designated by Zhejiang Diyuan InstrumentCo., Ltd.

• Problems or damages caused by repair or refitperformed by personnel other than those of or thoseauthorized by the Zhejiang Diyuan Instrument Co., Ltd.

• Problems and damages caused by incorrect reassemblyafter delivery.

• Problems and damages caused by natural disasters suchas fire, earthquake, rainstorm, flood or lightning, andother external factors.


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2 Operating InstructionsThe instrument has been carefully inspected before delivery.On delivery, please check whether the instrument is damagedduring transportation by visual inspection.

Please read over this chapter, because it contains importantinformation required for operating the instrument. Pleaserefer to relevant chapters for other information. If you haveany questions, please contact with the sales department ofZhejiang Diyuan Instrument Co., Ltd.

2.1 Check for Model and Specification

Check whether the nameplate on the surface of shell is in linewith the order.

The model and number of product shall be provided whencontacting with Zhejiang Diyuan Instrument Co., Ltd.

Figure 2.1.1 Nameplate

2.2 Accessories

Check whether the package contains the followingcomponent:

Hexagon wrench: one piece (nominal diameter 3mm)

2.3 Storage Instructions

If the instrument needs to be stored for a long time afterdelivery, the following points must be followed:

The instrument must be stored in an intact manner.

The storage place must meet the following conditions:

• No exposure to rainwater.

• Minimum vibration and impact.

• Temperature and humidity class:

Temperature: -30～+70

Humidity: Relative humidity 5 ～ 80% (Withoutcondensation)

The preferred ambient temperature is 25 and relativehumidity is around 65%.

If the Transmitter is left idle at the installation place fora long time before installation, its performance may beinfluenced by seepage of rainwater. Therefore, it mustbe ensured that the installation and wiring are carriedout as soon as possible after the Transmitter is deliveredto the installation place.

2.4 Instructions for Installation Place

To ensure long-term stable operation of the instrument, thefollowing terms must be considered when selecting theinstallation place.

Ambient temperature:

Avoid installing the instrument at a place where thetemperature varies frequently. If the installation place isexposed to thermal radiation of workshop, thermalinsulation must be adopted.

Air environment:

Avoid installing the instrument in corrosive air. Ifinevitable, please take proper measures to improveventilation and prevent rainwater from retaining in thewire conduit.

Vibration or impact:

Avoid installing the instrument at a place where it maybe vibrated or impacted.

Explosion-proof type:

According to gas types to which explosion-proof instrumentsare applicable, such instruments can be installed at variousdangerous places. Refer to precautions for installation andoperation in Chapter 11 “Explosion-proof Instrument” in thismanual for details.


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3 Installation

Warning

The installation of the electromagnetic flowmeter must becompleted by professional engineers or technical personnel.Non-professionals are not allowed to performinstallation-related procedures.

3.1 Installation Conditions

Avoid installing the instrument at a place with directsunlight or high ambient temperature in order to preventinsulation failure of exciting coil caused by unallowedtemperature rise due to too high ambient temperature.

Keep the instrument away from ferromagneticequipment such as large electric motors, largetransformers and electric welders.

Avoid interference of strong vibration.

Keep the instrument as far away from the places withcorrosive gases such as ammonia gas and acid mist aspossible. If the environmental conditions of the sitecannot meet the requirement, the user may raise theproblem when placing ordering and the Company willmanage to solve it.

The generation of leakage current is not allowed at pipesections where flowmeters are installed, and theflowtube and two ends of pipeline shall be wellgrounded with the grounding resistance no greater than10Ω.

The flow direction of fluid shall be in consistent withthe direction sign of flowmeter.

For a pipe where the instrument is installed, it shall beensured that the measured pipe is always filled with themeasured medium to prevent empty pipe.

Ordinary type flowmeter should not be installed at pipesections with negative pressure to prevent liningmaterial from falling off.

There shall be a straight pipe section not less than 5D(inner pipe diameter) at the upstream side of flowmeter(Figure 3.1.1), and if there is non-fully-opened gatevalve or regulating valve at its upstream side, the lengthof straight pipe section at the upstream side offlowmeter shall be 10D (Figure 3.1.2); the length ofstraight pipe section at the downstream side offlowmeter is usually required to be more than 3D.

Figure 3.1.1 Requirements for Upstream Straight Pipe Section

Figure 3.1.2 With Non-fully-opened Gate Valve orRegulating Valve at the Upstream Side

3.2 Installation Specifications

Attention

To ensure normal operation of the instrument, the installationof instrument must comply with the following points:

Flowmeter should be usually installed at horizontalposition, and the straight line between two electrodesshall be in the same horizontal plane.To prevent the occurrence of negative pressure, theelevation of flowmeter shall be slightly lower than thatof pipe, or certain head pressure shall be ensured at thedownstream side of flowmeter. As shown in Figure3.2.1.

Figure 3.2.1 Anti-Negative Pressure Installation

The inner measuring diameter of flowmeter shall beconsistent with the inner pipe diameter, and if not, theinner pipe diameter shall be greater than the innerdiameter of flowmeter, and a converging pipe ordiverging pipe with a cone angle no more than 15° isinstalled between them, as shown in Figure 3.2.2.

Figure 3.2.2 Installation When the Inner Measuring DiameterIs Inconsistent with the Inner Pipe Diameter

When flowmeter is installed at a vertical or inclinedpipe (liquid-solid two-phase flow), the medium shallflow from bottom to top, as shown in Figure 3.2.3.


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Figure 3.2.3 Inclined or Vertical Installation

For a pipe in which the flow interruption is not allowedtechnologically, a bypass pipe and access opening shallbe installed when installing the flowmeter as shown inFigure 3.2.4. Such devices can ensure continuous workof the equipment system when the flowmeter is out ofuse.

Figure 3.2.4 Installation When Flow Interruption Is NotAllowed in the Pipe

A flowmeter with small diameter may be directlysupported on the pipe; a flowmeter with large diametermust be placed on supporting feet through which thefoundation bears the weight of flowmeter, and anexpansion joint shall be installed at the pipe joint at thedownstream side of the flowmeter.It’s prohibited to handle or lift a flowmeter withtube/rod or rope passing through measuring tube toavoid damage to lining.It’s prohibited to handle the instrument by directlygrabbing the Transmitter with hands.The bolts connecting flowmeter flange and pipe flangemust be tightened, and the sealing washers shall haveuniform thickness to ensure tight connection withoutleakage. The inner diameter of sealing washers shall beidentical to the inner diameter of pipes, and openingsshall be aligned so that the washers will not protrude to

produce intercepting effect and thus influence themeasuring accuracy.Electrodes of flowmeter shall be wiped clean withalcohol cotton and kept from oil contamination.

3.3 Installation

Integrated (split type flowtube) installation

Figure 3.3.1 Integrated Installation

1. Sealing washers shall be placed between pipe flange andflowmeter flange.

2. As shown in the figure, bolts are inserted from the side ofpipe flange and fastened tightly with nuts at the other side.

Installation of split type Transmitter

Install the instrument vertically or horizontally on the pipewith diameter ≤60mm according to the situation ofinstallation site.

* Vertical installation on fixed steel pipe

Figure 3.3.2 Vertical Installation

1. Fix the instrument at the installing support with fourscrews.

2. Install the installing support and the instrument on the pipewith diameter ≤60mm with U-bolts.

* Horizontal installation at fixed steel pipe

Access opening

Bolt Sealingwasher

Nut GB/T 9119-2010 flange

DN60 Pipe

U-bolt M8 nutM8 flat washerand spring washer


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Figure 3.3.3 Horizontal Installation

1. Fix the instrument at the installing support with fourscrews.2. Install the installing support and the instrument on the pipewith diameter ≤60mm with U-bolts.3. If the pipeline on which the instrument is installed isnon-conducting, the Transmitter should be groundedseparately.

* Installation on fixed wall

Figure 3.3.4 Installation on Wall

1. Fix the instrument at the installing support with fourscrews.

2. Install the installing support and the instrument on the wallwith screws.

U-bolt

DN60 Pipe M8 flat washerand spring washer

M8 nut

M8 nut

M8 flat washerand spring washer

Wall

Expansion bolt M8


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Installation dimensions and weight

Split type flowtube

a=40mm

b=81mm

c= 140mm①

Total height = H+a

Split typeTransmitter

a=183mm

b=325mm

c= 152mm

d= 148mm

Integrated type

a=80mm ②

b= 152mm

c= 183mm ①

d=233mm

Total height =H+a+b

① Dimensions may vary with cable connector adopted;

② The dimension is 160mm when the temperature of medium is higher than l00°C.


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Common Specifications

DN (mm) Rated pressure(MPa)

Reference dimensions Reference weight(kg)L (mm) H(mm) D(mm)

8 4.0 150 108 90 5

10 4.0 150 108 90 515 4.0 200 114 95 8

20 4.0 200 126 105 925 4.0 200 141 115 932 4.0 200 154 140 10

40 4.0 200 166 150 11

50 4.0 200 179 165 1265 1.6 200 196 185 1680 1.6 200 210 200 18

100 1.6 250 230 220 22125 1.6 250 264 250 25150 1.6 300 301 285 31

200 1.6 300 346 340 41

250 1.0 300 305 395 65300 1.0 350 452 445 66

350 1.0 350 508 505 83

400 1.0 450 563 565 112450 1.0 450 613 615 120500 1.0 500 671 670 163

600 1.0 600 792 780 255700 0.6 600 888 895 249800 0.6 700 1001 1015 340

900 0.6 800 1103 1115 4501000 0.6 900 1199 1230 5001200 0.6 1000 1420 1400 590

1400 0.25 1200 1555 1620 680

1600 0.25 1600 1763 1820 980

1800 0.25 1800 1963 2045 10002000 0.25 2000 2168 2265 11002200 0.25 2200 2267 2400 1400

2400 0.25 2400 2572 2600 15002600 0.25 2600 2810 2800 16002800 0.25 2800 3040 3030 1750

3000 0.25 3000 3240 3230 1900


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4 Wiring

Warning

The wiring of the electromagnetic flowmeter must becompleted by professional engineers or technical personnel.Non-professionals are not allowed to performwiring-related procedures.

Attention

All connections shall be inspected before power on after allwiring is completed. Incorrect wiring may cause failure ordamage of components.

4.1 Wiring Instructions

The following instructions must be followed at wiring:

• When the ambient temperature ≥50 (122), pleaseuse external heat-resisting wire with the maximumtolerable temperature ≥70 (158).

• To protect the insulating layer and prevent damagecaused by moisture condensation, please do notconnect cable outdoors in rainy days.

• If the cable is too short, do not use it to connect theterminal of flowtube and Transmitter. Use anothercable with suitable length to replace it.

• When using waterproof sealing plug or waterproofsealing plug with connector, do not apply excessivetorque in tightening.

• Split type flowtube and Transmitter shall be groundedseparately.

• Make sure the power is disconnected beforedismounting shell cover.

• Connect the power after the shell cover is tightlyfastened.

• Lock the junction box cover with special bolts. Usethe attached hexagon wrench when needing to openthe junction box cover. See Figure 4.4.1 for how tounscrew lock screws.

• Be sure to screw special bolts tightly with the attachedhexagon wrench to lock the shell cover after mountingthe shell cover. See Figure 4.4.12 for how to screw onlock screws.

• Explosion-proof products shall be wired according tospecific requirements (and national laws andregulations) to ensure explosion-proof performance.

4.2 Cable

(1) Special signal cable

Figure 4.2.1 Signal Cable and Exciting Cable

Flow signal is transmitted through signal cable. The cablehas double-core lead inside and is covered with shieldinglayer outside. Cable jacket is made of heat-resistingpolyethylene material.

Diameter of finished product: 10.5 mm

Max. length: 100 m

Max. temperature: 80°C

Important

If the cable is too long, it’s recommended to cut offredundant part rather than wind it up. Lead terminals aretreated before leaving factory. Avoid the use ofintermediate junction plate to extend cable, which maydamage the shielding function.

Attention

• Wiring terminals S1, S2, DS1, DS2 and DS havedifferent potential, so they should be insulated toavoid contact with each other.

• To prevent the shielding layer from contacting withsignal wires or cable jacket, every shielding layer shallbe sheathed with ethylene resin tube or wrapped withpolyethylene tape.

Note

Wires S1 and S2 transmit signal from electrodes, and DS isthe potential of liquid (signal common terminal). Shieldinglayers DS1 and DS2 keep the same potential withelectrodes respectively, aiming to reduce the influence ofdistributed capacitance of cable in case of long cableadopted. It must be noted that, impedance conversionoccurs to signals from electrodes inside the Transmitter, sothe contact of these wires with any other element mayproduce errors. Therefore, special care shall be taken whentreating cable terminals.

(2) Power cable/output cable

PVC-insulated and armored control cable or PVC-insulatedand armored portable power cable is adopted.

White wire and insulating layerpeeled off for 10mm at least

Black wire and insulating layerpeeled off for 10mm at least

White wire and insulating layerpeeled off for 10mm at least

Black wire and insulating layerpeeled off for 10mm at least

Black wire shielding leadSignal cable

Outer cable jacket and shielding

Inner jacket and shielding White wire shielding lead

Outer and inner shielding wires twisted together

Exciting cable

2.5mm long shielding lead


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4.3 Wiring Ports

The instrument is of waterproof and sealed structure. Uponthe delivery of instrument, wiring ports of different sizesare provided with wiring connectors (waterproof sealingplug or waterproof sealing plug with connector) or theattached plastic plugs, and any size of wiring ports can beselected only at this time. See Chapter 11 for wiring portsof explosion-proof instruments.

(1) When there is no special optional size

Wiring ports are sealed with plugs (non-watertight), whichare removed in wiring.

(2) Use waterproof sealing plugs for wiring.

Important

To prevent water or condensate water from entering intothe shell cover of Transmitter, it’s recommended to usewaterproof sealing plugs. Do not screw plug screws tootightly so as not to damage cable. Check the tightness ofplug screws to ensure cable is fastened.

When connecting wiring tube or flexible tube, unscrew thewaterproof sealing plug and directly connect the tube towiring port.

Figure 4.3.1 Plastic Plug

(3) Wiring with wire conduit

When wiring with wire conduit, let the wire pass throughthe wiring port and use waterproof sealing plug to preventingress of water. Place the wire conduit at the angle asshown in Figure 4.3.3. Install a drain valve at the end ofvertical tube for regular drainage.

Figure 4.3.3 Wiring with Wire Conduit

4.4 Wiring

4.4.1 Open the Shell Cover

Unscrew the shell cover lock screw 1 with internal hexagonwrench (nominal diameter: 3mm) clockwise, and open theshell cover. Grab the flowmeter with hand, rotate the shellcover to the direction indicated by the arrow, and thenremove the shell cover.

Plastic plug


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Figure 4.4.1 Open Cover at Wiring with Wire Conduit

In case of split type, the shell cover of split type wiringchamber should also be opened.

4.4.2 Terminal Structure

Wiring terminals can be seen by removing the shell cover.

Figure 4.4.2

Terminal symbols are described in the table below.

Terminal structure of split type wiring chamber

Figure 4.4.3 Split Type Wiring Terminals

Split cable

Terminalsymbol

Terminal description

Power+Power -

Power supply

DO+DO-

Relay output, contact input or RS485 comm.Choose one from the three

IO+IO-

4~20mA current output

FR+FR-

Frequency output/pulse output

Screw the lock screwclockwise and twist off thecover anticlockwise

Exciting wire – green – green (G)

Exciting wire – yellow – yellow (Y)

Exciting wire – grounding – GND

Signal wire – white shielding

Signal wire – white

Signal wire – Black

Signal wire – black shielding

Signal wire – grounding

White electrode wireshielding wire

Black electrode wireshielding wire

Black electrode wireWhite electrode wire

Two-core signal wire

Three-core exciting wire

Black grounding wire

Yellow core wireGreen core wire

Grounding

Power L (+)Power N (-)


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4.4.3 Connection of Split Type Flowtube andTransmitter

Warning

Before wiring, please make sure the power of Transmitteris disconnected to avoid electric shock.

Connect special signal cable and exiting cable for Diyuaninstruments to the wiring terminals of Transmitter inaccordance with the diagram of wiring terminals.

4.4.4 Instructions forWiring of Power Cable

The following points must be followed when connectingpower cable. Violation of these warnings may causeelectric shock or damage of instrument.

Warning

• Make sure the power is disconnected to prevent electricshock.

• Be sure to confirm whether the power supply forinstrument is 220VAC power or 24V DC power.

• Make sure protective grounding terminals are groundedbefore power on.

• Install an external switch or breaker (Capacitance: 15A,as per IEC947-1 and IEC947-3) to turn on/off the power.Install the switch close to the instrument or at a place easyfor operation. Paste the sign of “Power disconnectingdevice” on the external switch or breaker.

Wiring steps:

1. Turn off the power of instrument.

2. Connect power cable to the power supply terminal.

4.4.5 Connection of DC Power Supply

When Transmitter uses DC power supply, attention shall bepaid to the following points:

(1) Connect to power supply

Important

Power supply electrodes cannot be connected reversedly.

L/+ pole: connect with +

N/- pole: connect with -

(2) Required supply voltage

Important

When using 24V power supply, the supply voltage is 24V(-15%~+20%). However, the input voltage of Transmitter

may reduce due to cable resistance, so it must be used inthe following range.

Figure 4.4.3 Supply Voltage and Cable Length

4.4.6 Grounding

Attention

Protective grounding terminal is provided both outsideand inside terminals, so you can use either of the two.

Figure 4.4.5 Grounding

Position of groundingterminal

Supply voltage and cable length

Used range E (V)Cable cross-area: 1.25 mm2

Cable cross-area: 2 mm2

Allow

ablecable

length(m)


13

Grounding for installation at metal pipes

The medium in metal pipes is electrically well connectedwith the earth already, so it’s allowed not to equipgrounding wire for flowmeter; a flowtube shall be reliablyconnected with metal pipe. As shown in Figure 4.4.6. If ahigher requirement is set for grounding or there is stronginterference in the environment, grounding wire may beseparately equipped; grounding rod shall be buried in dampearth with the depth greater than 1m and grounding wireshall adopt multi-strand copper wire with the sectional areano less than 4mm2.

Figure 4.4.6 Grounding for Installation at Metal Pipes

Grounding for installation at insulated pipes

The flowmeter must be grounded; as shown in Figure 4.4.7,install a metal tube or grounding ring between flowmeterand connecting flange of insulated pipe, connect the metaltube or grounding ring and the grounding terminal offlowmeter with conductor, and then carry out groundingconnection.

Figure 4.4.7 Grounding for Installation at Insulated Pipes

Pipes with strong stray current

When the pipe is attached with strong stray current, straycurrent shall be prevented from flowing through flowmeterfirst. At installation, add an insulated tube between pipeand flowmeter, and then carry out grounding connection inaccordance with the grounding method for installation offlowmeter at insulated pipes. Pipes electrically separatedby insulated tube shall be connected with copper wire withthe area no less than 4mm2, as shown in Figure 4.4.7, soleak current in the pipe can shunt through copper wire but

not pass the flowmeter, thus greatly reducing interferenceintroduced by measured liquid.

Figure 4.4.8 Grounding for Installation at Pipes withStrong Stray Current

4.4.7 Connection of Split Type Flowtube andTransmitter

Warning

Before wiring, please make sure the power of Transmitteris disconnected to avoid electric shock.

Connect special signal cable and exiting cable for Diyuaninstruments to the wiring terminals of Transmitter inaccordance with the diagram of wiring terminals.

4.4.8 Connection of External Instruments

Warning

Before wiring of external instruments, please make sure thepower of Transmitter and other external instruments isdisconnected.

The following points shall be noted when connectingwiring terminals of flowmeter with external instruments:

4~20mADC output

Insulated tube Insulated tube

Grounding ring Grounding ring

Grounding ring


14

Figure 4.4.9 4~20mAOutput

Positive and negative poles shall not be reversed atwiring.

Frequency output/pulse output

Important

Pay attention to polarity during wiring.

Frequency output/pulse output is active output with themaximum output voltage of 24V.

When the input filtering constant of electronic counteris greater than pulse width, the signal may weaken,resulting in incorrect counting.

When the transmission distance is long, a 1K-3Kresistor shall be installed at the end of electroniccounter.

Figure 4.4.10 Frequency Output/Pulse Output

Contact Input/State Input (Choose one of three)

Important

DO NOT connect this state with any signal sourcewith voltage, or else the input circuit will be damaged.

Select one from three (3 IN) at the bottom plate andconnect with jumper cap.

Figure 4.4.11 Contact Input/State Input

Relay output/state output (optional)

Select one from three (2 JDQ) at the bottom plate andconnect with jumper cap.

The instrument has a built-in relay with thespecification 3A 250VAC, 30VDC. DO NOT exceedthe load of relay.

If it is needed to drive higher current or voltage, anintermediate relay must be installed.

Figure 4.4.12 Relay Output/State Output

Max. resistive load 750Ω

Electromagneticflowmeter

Receiving instrument

Electronic counterLoad



Load or solenoid valve

AC or DC power supply


No-voltage state input


15

4.4.9 Install Shell Cover

Rotate the shell cover clockwise and install it to the flowmeter as shown below; then tighten the shell cover lock screw withinternal hexagon wrench (nominal diameter 3mm) anticlockwise.

Figure 4.4.13 Install Shell Cover

In case of split type, split type wiring chamber shell cover shall also be installed.

Figure 4.4.1 Open Shell Cover

Screw on the shell coverclockwise, and then tighten thelock screw anticlockwise


16

5 Basic Operation Steps (Introduction of Display Unit)The modification of data settings in the display unit is realized through the four setting keys: ESC/, ENT/, BACK/ andNEXT/. This chapter introduces the basic data structure and the usage of the four setting keys.

Note

• For integrated YYD electromagnetic flowmeter, the shell cover needs to be opened to use setting keys (Setting keys can bedirectly used for split type flowmeter).

5.1 Structure and Functions of Operation Panel

a. Company LOGO

b. FLOW Rate

c. Accumulative flow rate

d. Flow percentage

e. Product name

f. Setting key

g. Signal quality

h. Running state

Figure 5.1 Panel

5.2 Operation of Setting Keys

Press ESC/ and ENT/ together once to enter the automatic zero setting function interface.

In the key-locked state, press and hold S key and press E key for three continuous times to unlock.

Keys Keyname

Function in thedisplay-layer menu

Function inthe layer-1menu

Function inthe layer-2menu

Function in the parameter modificationmenu

Function in the parameterconfirmation and saving

menu

ESCLeftkey

Enter the layer-1menu

Return to thedisplay layer

Return to thelayer-1 menu

Shift the data modifying cursor left, andcancel modification after the cursor isshifted circularly to the leftmost place.

ENTRightkey

Enter the alarmbrowse menu

Enter thelayer-2 menu

Enter thelayer-3 menu

Shift the data modifying cursor right, andconfirm the modification after the cursor is

shifted to the rightmost place.

Confirm the selecteditem

BACKUp key Switch to the previous display unit Increase the numerical value at the cursorposition Shift the selected item up

NEXT Downkey

Switch to the next display unit Decrease the numerical value at the cursorposition

Shift the selected itemdown

Electromagnetic Flowmeter


17

Press ESC/ and ENT/ together once to enter the automatic zero setting function interface.

In the key-locked state, press and hold S key and press E key for three continuous times to unlock.

Important

Graphic expressions of the keys are as follows:

5.3Display Interface and Content

There are 5 display interfaces in the display modes, and BACK/ and NEXT/ can be used to select from the first displayinterface to fifth display interface.

The first line displays FLOW RateThe second line displays forward accumulativeflow rateThe third line displays flow percentage

The first line displays FLOW RateThe second line displays reverse accumulative flowrateThe third line displays flow velocity

The first line displays FLOW RateThe second line displays filling quantityThe third line displays setting value

The 1st displayinterface

(Main interface)

The 2nd displayinterface

The 3rd displayinterface

Electromagnetic flowmeter



FPV:SPV:


18

The first line displays FLOW RateThe second line displays frequency outputThe third line displays current output

The first line displays FLOW RateThe second line displays Transmitter temperatureThe third line displays time and date

The first line displays FLOW RateThe second line displays real-time flow curve

The 4th displayinterface



Press NEXT/again to return tothe 1st displayinterface

Fr Out:4-20mA:

Temper.:





19

5.4 Display Mode to Setting Mode

5.4.1 Structure of Menu Structure

The menu is divided into three layers + display layer:

1. The home page of display layer displays FLOW Rate, accumulative flow rate, and flow percentage bar. You can alsoview other display contents with Up and Down keys here.

2. The layer-1 menu is the parameter classification layer.

3. The layer-2 menu is the function classification layer.

4. The layer-3 menu is the parameter modification layer.

Structure of layer-1 menu

PARMS VIEW

PARMS SETUP

Layer-2 menu of PARAMSVIEW

COMMUNICATION

OUTPUT

TEST

SYSTEM LOG Layer-2 menu ofSYSTEM LOG

Password0000

Password0000

Password0000

Password0000

Layer-2 menu of PARMSSETUP

Layer-2 menu ofCOMMUNICATION

Layer-2 menu ofOUTPUT

Layer-2 menu ofTEST

Note: The layer-1 menus are displayed with four lines in a screen, which are displayed in arolling and circular manner by pressing the BACK/NEXT key; the selected item is fullyhighlighted, and there is the menu number in front of each item; the system will return to thehome page with the keys not operated for a certain time, which can be set in the system and is60S by default. Except the first line and the last line, other selected items are in the second line.


20

Structure of layer-2 menu

PARMS VIEW

Status

Parameters

Configuration

Basic Setup

Nonlinear

PARMS SETUP

Calibration

Detail Setup

Transmitter

MODBUS

HART

GPRS

CAN

ProfiBus

COMMUNICATION

Display as follows:

1. Status2. Parameters3. Configuration

Browse menu can only beread but not edited andmodified.

In the flow parameter settingmenu, the settings can onlybe modified throughpassword authentication.

Instrument communicationconfiguration menu is used toconfigure communicationfunctions and communicationprotocols of the instrument.Including: RS485communication, Hartcommunication, Cancommunication, Profibuscommunication, and GPRScommunication.


21

OUTPUT.

Analog Out

Digital Out

Alarm Out

Relay In

TEST

TEST 1

TEST 2

TEST 3

SYSTEM LOG

Modify Log

Alarm log

Run Log

SYSTEM LOG menu isused to query systemparameters and staterecords, everymodification of systemparameter is recorded, andthe query page displaysthe name of modifiedparameter, date ofmodification, and the databefore and aftermodification.

TEST menu is used to letthe instrument outputdesignated data fordebugging. The menuneeds two-level passwordauthentication. In theTEST, the instrument canoutput designated current/frequency/pulse count,and read internalparameters and operatingstate signs of instrument.

OUTPUT menu is used toconfigure output signals ofthe instrument, including4-20mA analog output,frequency， digital output,alarm output, contactinput, and outputdamping.


22

Structure of layer-3 menu and saving confirmation menu

Status

Parameters

Configuration

FLOW Rate

Velocity

FORWARD TOTAL

FORWARD TOTAL

Frequency

Out Current

Temperature

Exci Current

RUN Time

Nominal Diameter

Flow User Span

Meter Factor

Magflow Zero

Low Cut Flow

Flow Density

Flow Direction

Device ID

Baud Rate

Parity

Data Struct

Date Number

Browse menu can be onlyread but not edited andmodified. Settings can bemodified in correspondingsetting menu bars if needed.


23

Nonlinear

Basic Setup

1. Confirm saving

2. Cancel saving

Nominal Diameter

Flow User Span

Meter Factor

Magflow Zero

Low Cut Flow

Flow Density

Flow Direction

Flow User Unit

Total Unit

Flow Damping

FORWARD_TOTAL_H

FORWARD_TOTAL_L

REVERSE_TOTAL_L

REVERSE_TOTAL_H

Dynamic Filt

AD Read Time

If a parameter is modifiedin the layer-3 menu, whenreturning to the layer-2menu, a parameter savingconfirmation menu popsup!

Nonlinear Correction

Flow_Point_1

Flow_Factor_1

Flow_Point_2

Flow_Factor_2

Flow_Point_3

Flow_Point_4

Flow_Point_5

Flow_Factor_4

Flow_Factor_3

Flow_Factor_5

In the parameter modificationmenu, press ENT/ to enter themodification activated state; nowa digit or a group of digits arehighlighted in the parameter, andyou can increase or decrease thedata with BACK/ or NEXT/.Press ENT/ to shift the cursorright, and when the cursor isshifted to the last place, pressENT/ again to completemodification.


24

Calibration

4mACalibrate

20mACalibrate

Fr Calibrate

Temper Calibrate

Factor Calibrate

Empty Calibrate

Calibration menu is used toset current coefficient,frequency coefficient,temperature coefficient,consistency coefficient, anddiscrete degree calibrationof the system, mainly forfactory setting.

Detail Setup

Device ID

Flow Decimal Pnt

Empty Alm

Sig Overflow

Language

System Time

Password 1

Password 2

Password 3

Menu Return Time

Noise Reduce

Key Lock

Exci Fr

Transmitter

AZL

Empty Factor

Detail Setup menu is usedto set system-relatedparameters.

Transmitter menu is usedfor empty pipe calibrationunder full pipe flow state.


25

MODBUS config.

Baud rate

Parity

Data Struct

4-20mAModeAnalog Out.

Digital Out.

4-20mADamping

Fr/Pulse Output

Pulse Rate

Pulse Width

Alarm Output

Alarm Out.

H Rate Value

L Rate Value

HH Rate Value

LL Rate Value

FSV

Relay Delay Time

ON/CN

H Temper Value

Note: Communication function can beactivated or deactivated;Communication address: 001~255Baud rate: 115200, 38400, 19200,14400, 9600, 4800, 2400, 1200Parity bit: No check, odd check, evencheckData Struct: 4-3-2-1, 3-4-1-2, 1-2-3-4,2-1-4-3

4-20mAMode: One-way, two-way4-20mADamping: 01-30Fr/Pulse Output: Frequency, pulsePulse Rate: 100.00L/pPulse Width: 5mSAlarm Output: Output disabled, anyalarm, high temperature alarm,excitation interruption alarm, emptypipe alarm, accumulation alarm,lower-limit alarm, upper-limit alarm,upper/lower-limit alarmH Rate Value: 90%HH Rate Value: 110%L Rate Value: 20%LL Rate Value: 10%FSV: 0.0000m3Relay Delay Time: 30sON/CN:Normally-open,normally-closedH Temper Value: 000065 °C


26

TEST 14-20mATest

Fr Output Test

Relay In. Relay In.

Relay Inuration: Inputdisabled, batch delay start,accumulation reset, and batchexternal start

TEST is used to simulatesignal output in the statewithout signal input

Parameter savingcancelled!

Layer-2 menu ofeach level

Layer-3 menu ofeach level

Parameter savedsuccessfully!

If a parameter is modifiedin the layer-3 menu, whenreturning to the layer-2menu, a parameter savingconfirmation menu popsup!

1. SAVE!

2. CANCEL!

2. CANCEL!

1. SAVE!


27

5.4.2 Display Example: Steps from Display Interface to Parameter Setting Mode

Start:Display interface

Layer-1 menu barParameter

classification layer

Password enteringinterface

Layer-2 menu

Setting mode

Press ESC/ once to enter layer-1menu

Press BACK/ and NEXT/ toselect the menu required; pressESC/ once to return to the displayinterface. Press ENT/ to enter thesubmenu (layer-2 menu) of theselected item.

NoteEnter the submenu for the 2nd, 3rd, 4th,and 5th items.

Highlighted content indicates thecurrent item selected.Press ENT/ to enter the passwordentering interface.

Press ENT/ to confirm the previouspassword character and change thenext password character to behighlighted writable item. PressENT/ to enter the layer-2 menuafter password is entered. PressBACK/and NEXT/ to changethe numerical value of writable item;press ESC/ to shift the highlightedcharacter left until returning to thelayer-1 menu. Return to the previousinterface in case of wrong password.

Press ENT/ to enter layer-3 menu(parameter modification layer); pressBACK/ and NEXT/ to select theitem required; press ESC/ once toreturn to the interface of previouslayer (If a parameter is modified inthe layer-3 menu, when returning tothe previous interface, a parametermodification saving interface popsup).

Press ENT/ to enter the item to bemodified and modify it; press BACK/ and NEXT/ to select the itemrequired; Press ESC/ once to returnto the previous interface.

1. PARMS VIEW2. PARMS SETUP3. COMMUNICATION4. OUTPUT.

1. PARMS VIEW2. PARMS SETUP3. COMMUNICATION4. OUTPUT.

Password

1. Basic Setup2. Nonlinear3. Calibration

Basic Setup 2-1-1

Nominal Diameter


28

5.4.3 Parameter Setting Mode

The parameter to be set can be selected after activating the parameter setting mode by following the steps above. If no operationis made within certain time after entering this mode, the system will automatically return to display the first display interface(main interface).

Parameter data format:

Data are given in one of the following three formats according to parameter type.

Format Typical display Displayed options Content

1) Discrete selection typeBasic Setup 2-1-7FLOW User unit m3/h

m3/h, kg/m, L/m, Kg/h, t/h Select the desired data frompredefined options.

2) Continuous selection typeCalibration 2-3-14mA calibration +000

-300~+299 Add or subtract 1 or 10 to or from apreset continuous value.

3) Numeric typeBasic Setup 2-1-2Meter Factor 1.0000

Numerical value is limitedto 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,(-, + ).

Data adopt a value expressed withfigures and decimal point.

5.5 Parameter Setting Steps

The parameter to be set can be selected when the system is at the parameter setting menu. The parameter setting modeintegrates frequently-used parameters. This section introduces operation steps for flow rate unit setting and flow instrumentcoefficient setting.

5.5.1 Setting Sample of Discrete Selection Type Parameter: FLOWRate unit

The sample introduces the setting of a discrete selection type parameter “Measuring state parameter: 2-1-7 FLOW Rate unit”,from the default “m3/h”→ “t/h”.

This screen indicates the system has entered the parametersetting mode. Press ENT/ to enter the flow measurementparameter menu.

This screen indicates the system has entered the flowmeasurement parameter menu, and the selected is the firstsubitem. Press ENT/ to enter the item to be modified tomodify the parameter; press BACK/ and NEXT/ toselect the item to be modified; press ESC/ once to return tothe previous interface.

Start:Parameter settingmodeParameterclassification

Basic SetupNominal Diameter


Basic Setup 2-1-1

Nominal Diameter


29

The screen switches to the subitem “FLOW Rateunit”. Press ENT/ to make the item modifiable.

Press BACK/ and NEXT/ to select the desireddata from predefined options.

In this example, press BACK/ for three times orNEXT/ for three times to select t/h.

After t/h is selected, press ENT/ to confirm it. Thenpress ESC/ to enter the parameter savingconfirmation menu.

In the saving confirmation menu, confirm saving tosave the modified data in the system; or cancel savingnot to save the modification. Press BACK/andNEXT/ for selection.

After confirmation, the system automatically return tothe layer-2 menu, and then press ESC/ twice toreturn to the main interface.

Basic SetupUsed range

Basic Setup 2-1-7

FLOW Rate unit

FLOW Rate unitBasic Setup 2-1-7

Basic Setup 2-1-7

Basic Setup 2-1-7

FLOW Rate unit

FLOW Rate unit

Confirm parametermodification

Confirm savingof parametermodification



1. SAVE!

2. Cancel!

or


30

5.5.2 Setting Sample of Continuous Selection Type Parameter: 4mACalibration

This sample introduces the setting of a continuous selection type parameter “Calibration 2-3-1: 4mA calibration”, from “+000”→ “+027”.

This screen indicates the system has entered theparameter setting mode. Press BACK/ andNEXT/ to select the layer-2 menu (parameterclassification layer).

Select the parameter classification layer of theitem to be set/modified (4mA calibration is in theCalibration menu). Press ENT/ to enter.

The interface switches to 4mA calibration. PressENT/ to make the item become modifiable.

The highlight indicates the item is modifiable.Press BACK/ and NEXT/ to select thedesired data between -200~200. Press BACK/and NEXT/ once to add or subtract the valueby 1. Press BACK/ for 27 times to change4mA calibration +000 to +027.

Press ENT/ to confirm data after the data to bemodified is selected.

Start:Basic SetupNonlinearCalibration



Calibration4mA calibration

Calibration 2-3-1

4mA calibration

Calibration 2-3-1

4mA calibration

4mA calibration

Calibration 2-3-1


31

After confirmation of data, press ESC/ to enter theparameter saving confirmation menu. Operate as above.

In the saving confirmation menu, confirm saving to savethe modified data in the system; or cancel saving not tosave the modification. Press BACK/and NEXT/ forselection.

After confirmation, the system automatically return tothe layer-2 menu, and then press ESC/ twice to returnto the main interface.

5.5.3 Setting Sample of Numeric Data: Meter Factor

The sample introduces the setting of a numeric parameter “Basic Setup: 2-1-2Meter Factor”, from the default 1.0000 to 1.5000.

This screen indicates the system has entered the parametersetting mode. Press BACK/ and NEXT/ to select thelayer-2 menu (parameter classification layer). PressENT/ to enter the layer-3 menu.

Confirm data

Confirm parametersaving

Calibration 2-3-1

4mA calibration


1. SAVE!

2. CANCEL!


Start:Basic SetupParameterclassification



32

This screen indicates the system hasentered the layer-3 menu.

Basic SetupMeter Factor

Basic Setup 2-1-1

Nominal Diameter

Meter Factor

Meter Factor

Meter Factor

Meter Factor

Meter Factor

This screen indicates the system hasentered the item to be modified“Measuring state parameter: 2-1-2instrument coefficient”.

In numeric data, press ENT/ toenter the modifiable state; thenumerical value to be modified ishighlighted. Press BACK/ andNEXT/ to select a numerical value.Then press ENT/ to confirm thecurrent value and make the nextvalue modifiable; until the lastnumerical value is confirmed, pressENT/ to confirm the whole data.(At the modifying state, pressESC/ to return to the previousvalue for modification; if pressingESC/ at the leftmost place, themodifying state is deactivated withmodification not saved.)

Press BACK/ for five times orNEXT/ for six times.

Basic Setup 2-1-1

Basic Setup 2-1-1

Basic Setup 2-1-1

Basic Setup 2-1-1

Basic Setup 2-1-1

BACK × 5 or NEXT/ × 6


33

The current screen indicates the instrumentcoefficient 1.0000 is modified to 1.5000.

Parameter saving confirmation interface.

After confirmation, the system automaticallyreturn to the layer-2 menu, and then pressESC/ twice to return to the main interface.

Confirm data

Confirm saving


Basic Setup 2-1-2

Meter Factor

1. SAVE!

2.CANCEL!



34

6 Parameter Specification6.1 Parameters

Except for parameters specially required by users inordering, all other internal parameters are initialized todefaults.

Important

Be sure to maintain the power supply connected for 30s atleast after parameter setting. If the power is turned offimmediately after parameter setting, the setting will becancelled.

Note

To ensure correct flow data are obtained, the setting ofnominal diameter, flow measuring range, instrument zeroand instrument coefficient is of great importance for anassembled split type YYC electromagnetic flowmeter orintegrated type YYC electromagnetic flowmeter. If theflowtube and Transmitter of a split type YYCelectromagnetic flowmeter are ordered together or anintegrated type YYC electromagnetic flowmeter is ordered,the parameters such as nominal diameter, used range,instrument zero, and instrument coefficient will be set atthe manufacturing plant before delivery and needn’t be setseparately. If a Transmitter is ordered separately, allparameters will be set as defaults; therefore, users mustchange parameter settings according to the nameplate offlowtube.

6.2 Parameter List

Parameter list is composed of the following items.

Item Name R/W Datascope Unit Default Content

description

Description of parameter content

Initial value of parameter afterprogram is imported

Unit set as per data scope

This item defines data selecting scope

R: Read only

W: Writable

Parameter name

Parameter number


35

6.3 Summary of Parameter List

1) Parameter browse mode

Parameter browse mode includes relevant items in Status, Parameters, and communication configuration browse.

1 Status

ItemName R

/W

Data scope Unit Default Content descriptionDisplay

1-1-1FLOW Rate+0.000 m3/h

R -99999~+99999 (Floatingpoint) m3/h /

Display FLOW Rate in the displayinterface; a value beyond this rangeis displayed in scientific notation.

1-1-2Velocity

+0.0000 m/sR -20 ~+20 (Floating point) m/s / Display Velocity in the display

interface

1-1-3FORWARD TOTAL000000000 m3

R 0 ~999999999 (Floatingpoint) m3 / Display forward accumulative flow

in the display interface

1-1-4REVERSE TOTAL000000000 m3

R 0 ~999999999 (Floatingpoint) m3 / Display reverse accumulative flow


1-1-5Frequency0000 Hz

R 0 ~6000 (Integer) Hz /Display the frequency output

corresponding to FLOW Rate in thedisplay interface

1-1-6Out Current+4.000 mA

R 4 ~23.2 (Floating point) mA /Display the current output

corresponding to FLOW Rate in thedisplay interface

1-1-7Temperature+29 °C

R0~100(Integer)

°C / Display temperature of Transmitter

1-1-8Exci Current124.2 mA

R 0 ~300 (Floating point) mA / Display exciting current ofexcitation

1-1-9RUN Time

0000 days 00 hoursR / h / Display running time of flowmeter

2 Parameters

1-2-1Nominal Diameter

1200 mmR 8 ~3000 (Discrete type

integer) mm 1200Display nominal diameter of

selected flowtube set in parametersettings

1-2-2Flow User Span016000 m3/h

R 0.01 ~200000 (Floatingpoint) m3/h 016000 Display used range set in parameter

settings

1-2-3Meter Factor1.0000

R 0.1-100.0 (Floatingpoint) / 1.0000 Display instrument coefficient set in

parameter settings

1-2-4Magflow Zero+0.0000 m3/h

R -5000.0~+5000.0(Floating point) m3/h +0.0000 Display instrument zero set in

parameter settings

1-2-5Low Cut Flow0.0000 m3/h

R 0.0 ~1000.0 (Floatingpoint) / 0.0000 Display small signal cutting set in

parameter settings

1-2-6Flow Density1000.0 kg/m3

R 0/1 ~100.0 (Floatingpoint) kg/m3 1000.0 Display fluid density set in

parameter settings

1-2-7Flow DirectionForward

R Forward, reverse / Forward Display fluid direction set inparameter settings


36

3 Communication configuration browse

1-3-1 Device ID001

R 1 ~255 (Integer) / 001 Display data format set in the instrumentcommunication configuration

1-3-2Baud Rate9600

R 1200~115200 (Discretetype integer) / 9600 Display communication rate set in the

instrument communication configuration

1-3-3 ParityNo check

R No check, odd check,even check / No check Display check format set in the instrumentcommunication configuration

1-3-4 Data Struct2143

R 1234, 3412, 2143, 4321 / 2143 Display data format set in the instrumentcommunication configuration

1-3-5 Date NumberNov 7 2103

R / / / Display host number

2) Parameter setting mode

Parameter setting mode includes relevant items in Basic Setup, Nonlinear, Calibration, Detail Setup, and Transmitterparameter setting.

1 Basic Setup

2-1-1Nominal Diameter

1200 mmW 8 ~3000 (Discrete type

integer) mm 1200 Nominal diameter of selectedflowtube

2-1-2 Meter Factor1.0000

W 0.1 ~100.0 (Floatingpoint) / 1.0000 Instrument coefficient after calibration

of electromagnetic flowmeter

2-1-3Flow Density1.0000 g/m3

W 0.1 ~100.0 (Floatingpoint) g/m3 1.0000 Density of measured fluid

2-1-4 Low Cut Flow0.0000 m3/h

W 0.0 ~+1000.0 (Floatingpoint) m3/h +0.0000 Instrument small flow cutting

2-1-5Magflow Zero+0.0000 m3/h

W -5000~+5000 (Floatingpoint) m3/h +0.0000 Instrument zero shift

2-1-6Flow User Span016000 m3/h

W 0.01 ~200000 (Floatingpoint) m3/h 016000

Used range:Flow rate corresponding to 20mA in4-20mA output;Flow rate corresponding to 5000Hz in

2-1-7 Flow User Unitm3/h

W m3/h, kg/m, kg/h, t/h,L/m, L/h / m3/h Select the unit of flow rate displayed


2-1-8 Total Unitm3

W m3, kg, t, L / m3 Select the unit of accumulative flowdisplayed in the display interface

2-1-9 Flow Damping001

W 001~250 (Integer) / 001 Add this unit at places with strongflow fluctuation

2-1-10 Flow DirectionForward

W ForwardReverse

/ Forward Flow direction

2-1-11FORWARD_TOTAL_H

000000000 m3W 0 ~999999999 (Integer) m3 0 Integer part of forward accumulative

flow

2-1-12 FORWARD_TOTAL_L0.0000 m3 W 0 ~0.9999 (Floating

point) m3 0.0000 Decimal part of forward accumulativeflow

2-1-13 REVERSE_TOTAL_H000000000 m3 W 0 ~999999999 (Integer) m3 0 Integer part of reverse accumulative

flow

2-1-14 REVERSE_TOTAL_L0.0000 m3 W 0 ~0.9999 (Floating

point) m3 0.0000 Decimal part of reverse accumulativeflow

2-1-15 Dynamic FiltON

W ONOFF

/ ON Set ON/OFF of dynamic filtration

2-1-16 AD Read Time W 1*50Hz ~6*50Hz(Selective) / 2*50Hz Set AD sampling cycle


37

2 Nonlinear

2-2-1Nonlinear Correction

OFFW

OFFON

/ OFF Set ON/OFF of nonlinear function

2-2-2Flow_Point_10.0000 m3/h

W 0 ~999999 (Floatingpoint) ma/h 0.0000 The first correction point

2-2-3Flow_Factor_1

1.0000W 0 ~999999 (Floating

point) / 1.0000 The first correction pointcoefficient

2-2-4Flow_Point_20.0000 m3/h

W 0 ~999999 (Floatingpoint) m3/h 0.0000 The second correction point

2-2-5Flow_Factor_2

1.0000W 0 ~999999 (Floating

point) / 1.0000 The second correction pointcoefficient

2-2-6Flow_Point_30.0000 m3/h

W 0 ~999999 (Floatingpoint) m3/h 0.0000 The third correction point

2-2-7Flow_Factor_3

1.0000W 0 ~999999 (Floating

point) / 1.0000 The third correction pointcoefficient

2-2-8Flow_Point_40.0000 m3/h

W 0 ~999999 (Floatingpoint) m3/h 0.0000 The fourth correction point

2-2-9Flow_Factor_4

1.0000W 0 ~999999 (Floating

point) / 1.0000 The fourth correction pointcoefficient

2-2-10Flow_Point_50.0000 m3/h

W 0 ~999999 (Floatingpoint) m3/h 0.0000 The fifth correction point

2-2-11Flow_Factor_5

1.0000W

0~999999(Floating point)

/ 1.0000 The fifth correction pointcoefficient

3 Calibration

2-3-14mA calibration

+000W -300~+299 (Integer) / +000

At calibration of 4~20mA output4mA calibration

2-3-220mA calibration

+000W -300~+299 (Integer) / +000

At calibration of 4~20mA output20mA calibration

2-3-3Fr Calibrate

+000W -300~+299 (Integer) / +000 Calibrate frequency

2-3-4 Temperature calibration+000 W -200~+200 (Integer) / +000 Calibrate temperature

2-3-5Factor Calibrate

1.0000W 0.1 ~100.0 (Floating

point) / 1.0000Consistency coefficient of YYDelectromagnetic flowmeterTransmitter

2-3-6Empty Calibrate

3.6W 0-20.0(Floating point) / 3.6

ForEmpty Pipe Alarm,it’s function isRemain.

2-3-7Remain0010

W 0000~0100 (Floatingpoint) / 0010 Remain


38

4 Detail Setup

2-4-1Device ID001

W 0 ~255 (Integer) / 001Instrument number set when severalinstruments communicate withcomputer

2-4-2Flow Decimal Pnt

2W 0, 1, 2, 3, 4 / 2

Number of places in the decimalpart of FLOW Rate in the displayinterface

2-4-3 Empty AlmON

W ONOFF

/ ON Select whether to give an alarm incase of empty pipe

2.4.4 Sig OverflowON

W ONOFF

/ ON Select whether to give an alarm incase of signal overflow

2-4-5 LanguageChinese

W ChineseEnglish

/ Chinese Select the language of displayinterface

2-4-6System Time

2013-11-13 04:57:23W / /

2016-12-13-04:05:06

Set time and date in the displayinterface

2-4-7Password 10000

W 0000~9999 / 0000 User password 1

2-4-8Password 20000

W 0000~9999 / 0000 User password 2

2-4-9Password 30000

W 0000~9999 / 0000 User password 3

2-4-10Menu Return Time

60SW 60S, 5M, 10M, Never / 60S

Set the idle time after which themenu interface automatically returnsto the main interface

2-4-11Noise Reduce

OFFW

ONOFF

OFF Set the AD op amp amplification

2-4-12Key LockOFF

WONOFF

/ OFF Set ON/OFF of key lock

2-4-13Exci Fr6.25 Hz

W 3.125, 6.25 12.5, 25,37.5 Hz 6.25 Set frequency of excitation output

2-4-14Record Time

2 SW

1S, 2S, 5S, 10S, 30S,1M, 2M, 5M, 10M,

30M, 1H

SMH

2S Time interval at recording of flowdata

5 Transmitter

2-5-1AZLStart

/ Start / / Start empty pipe auto-calibration

2-5-2Empty Factor

181W 0000~0255 (Integer) / 2

Number of places in the decimalpart of FLOW Rate in the displayinterface

3) Instrument communication configuration

Instrument communication configuration mode includes relevant items in MODBUS configuration, HART configuration,GPRS configuration, CAN configuration, and ProfiBus configuration.

1 MODBUS configuration


39

3-1-1Baud rate9600

W 1200, 2400, 4800,9600, 14400, 19200,38400, 115200

/ Baud rateIt means the changes of modulatedsignal in unit time, i.e. the number oftimes for which carrier parameterchanges in unit time.

3-1-2ParityNo check

WNo checkOdd checkEven check

/ No check A way of correcting data erroradopted in data transmission

3-1-3 Data Struct 2143 W 1234, 3412, 2143,4321 / 2143 Set the order of data input through

MODBUS

4) OUTPUT

OUTPUT mode includes relevant items in Analog Out, Digital Out, Alarm Out, and Relay In.

1 Current output

4-1-14-20mA ModeOne-way

WOne-wayTwo-way

/ One-wayIn 4~20mA output, 4mA indicatesflow rate zero or negative upperlimit of flow rate.

4-1-24-20mA Damping

01W 001~030 (Integer) / 01 Set output current damping

2 Digital Out

4-2-1 Fr/Pulse OutputFrequency W

FrequencyPulse

/ FrequencySelect digital output mode

4-2-2Pulse Rate100.00 L/p

W 0.01 ~100000 (Floatingpoint) L/P 100.00

Volume that each pulse representswhen selecting pulse as digitaloutput mode

4-2-3Pulse Width5 mS

W 5, 10, 50, 100 mS 5 Width of each pulse


40

3 Alarm Out

4-3-1Alarm Output

OFFW

OFF, AnyAlarm, HHRateAlm, CoilOpen Alm, emptyalm, FSV, HLRate Alm,LLRate alm, LowRate alm,

HLRate alm

/ Outputdisabled

Set the content to be alarmed inrelay alarm output

4-3-2H Rate Value90.0 %

W 0.0 ~200.0% (Floatingpoint) % 90 Set upper-limit alarm value

4-3-3HH Rate Value

110.0 %W 0.0~200.0% (Floating

point) % 110 Set upper-limit alarm value

4-3-4 L Rate Value20.0 % W 0.0 ~200.0% (Floating


4-3-5 LL Rate Value10.0 % W 0.0 ~200.0% (Floating


4-3-6FSV

0.0000 m3W

0.0 ~10000.0(Floating point)

m3 0.0000 Set accumulation alarm value

4-3-7Relay Delay Time

030 sW

001-030Integer

S 030 Set the valve opening time delay

4-3-8ON/CNON

WNormally openNormally closed

/ Normallyopen

Set the state of relay in normalconditions

4-3-9TH Temper Value

000065 °CW 000-200 (Floating point) °C 65 Set temperature alarm value


41

4 Relay In

4-4-1Relay InputOFF

W

OFFRelay ClearAuto ClearDelay Clear

/ Inputdisabled

Configure the content of contactinput

5) TEST

TEST includes relevant items in TEST 1, TEST 2, and TEST 3.

① TEST 1

5-1-14-20mA Test4.0000 mA

W 4.0~20。0 (Floatingpoint)

mA 4.0000 Set current output value atdebugging

5-1-2Fr Output Test0.0000 Hz

W 0.0 ~5000.0 (Floatingpoint) Hz 0.0000 Set frequency output value at

debugging6) SYSTEM LOG mode

SYSTEM LOG includes Modify Log, alarm log, Run Log, and flow curve.

6-1 Modify Log W / / /Record the time of parametermodification, and the data before andafter modification

6-2 Alarm log W / / /Record the time when the instrumentgives an alarm and the content ofalarm

6-3 Run Log W / / /Record the time of each startup andshutdown, and average flow rate in 5sbefore shutdown.


42

6.4 Parameter Description

1) Parameter browse modeParameters usually to be known are classified in theparameter browse mode. In this mode, all parameters areread-only and cannot be modified. The modification ofsome parameters in the parameter setting mode changescorresponding parameters in the parameter browse mode.[1-1-1: FLOW Rate] Display the current flow rate whenthe instrument is runningThe parameter is used to browse the current FLOW Ratewhen the instrument is running.[1-1-2: Velocity] Display the current flow velocity whenthe instrument is runningThe parameter is used to browse the current Velocity whenthe instrument is running.[1-1-3: FORWARD TOTAL] Display the integer part offorward accumulationThe parameter is used to browse the integer part of forwardaccumulation displayed in the instrument.[1-1-4: REVERSE TOTAL] Display the integer part ofreverse accumulationThe parameter is used to browse the integer part of reverseaccumulation displayed in the instrument.[1-1-5: Frequency] Display output frequencycorresponding to FLOW RateThe parameter is used to browse the frequency outputcorresponding to FLOW Rate displayed in the instrument.It’s consistent with the output frequency displayed in thethird display interface.[1-1-6: Out Current] Display output currentcorresponding to FLOW RateThe parameter is used to browse the current outputcorresponding to FLOW Rate displayed in the instrument.It’s consistent with the output current displayed in the thirddisplay interface.[1-1-7: Temperature] Display the overall temperature offlowtubeThe parameter is used to browse the overall temperature offlowtube. It’s consistent with the host temperaturedisplayed in the fourth display interface.[1-1-8: Exci Current] Display the exciting currentThe parameter is used to browse the current of excitationfeedback circuit in the excitation module.[1-1-9: RUN Time] Display the running time of instrumentThe parameter is used to browse the power-on time ofTransmitter.[1-2-1: Nominal Diameter] Display the diameter ofinstrumentThe parameter is used to browse the value of instrumentdiameter set in the parameter setting mode.[1-2-2: Flow User Span] Display the measuring range ofinstrument

The parameter is used to browse the value of used range setin the parameter setting mode.[1-2-3: Meter Factor] Display instrument coefficientThe parameter is used to browse the value of instrumentcoefficient set in the parameter setting mode.[1-2-4: Magflow Zero] Display instrument zeroThe parameter is used to browse the value of instrumentzero set in the parameter setting mode.[1-2-5: Low Cut Flow] Display small signal cuttingThe parameter is used to browse the value of small signalcutting set in the parameter setting mode.[1-2-6: Flow Density] Display fluid densityThe parameter is used to browse the value of fluid densityset in the parameter setting mode.[1-2-7: Flow Direction] Display fluid flow directionThe parameter is used to browse the value of fluid flowdirection set in the parameter setting mode.[1-3-1: Device ID] Display communication addressThe parameter is used to browse the value ofcommunication address set in the parameter setting mode.[1-3-2: Baud Rate] Display communication rateThe parameter is used to browse the value ofcommunication rate set in the instrument communicationconfiguration mode.[1-3-3: Parity] Display check formatThe parameter is used to browse the value of check formatset in the instrument communication configuration mode.[1-3-4: Data Struct] Display data formatThe parameter is used to browse the value of data formatset in the instrument communication configuration mode.[1-3-5: Date Number] Display host numberThe parameter is used to browse the host number displayedin the startup interface of Transmitter.2) Parameter setting modeFrequently-used parameters are integrated in the parametersetting mode, and the parameters in the data block can becalled to control all basic functions. The parameters in theparameter setting mode have the same name as those inother modes, but the modification of a parameter in theparameter setting mode will result in automaticmodification of corresponding parameter in other modes.[2-1-1: Nominal Diameter] Setting of nominal diameterThe setting is related to the display of item 1-2-1.The parameter is used to set the nominal diameter offlowtube.The following diameters are optional (Unit: mm).


43

[2-1-2: Meter Factor] Setting of instrument coefficientThe setting is related to the display of item 1-2-3.The parameter is used to set the instrument coefficient aftercalibration.[2-1-3: Flow Density] Setting of mass flow densityThe setting is related to the display of item 1-2-6.The parameter is used to set the density of mass flowmedium.When 2-1-7 FLOW Rate unit is modified to kg/m, Kg/h,and t/h, the parameter must be set. If a mass unit is selectedin 2-1-7 FLOW Rate unit and the parameter is set as 0, theflow rate is displayed as 0. Now it must be confirmed thatthe fluid density is set correctly.[2-1-4: Low Cut Flow] Setting of small signal cuttingThe setting is related to the display of item 1-2-5.The parameter is used to set the small signal cutting ofinstrument.[2-1-5: Magflow Zero] Setting of instrument zero shiftThe setting is related to the display of item 1-2-4.The parameter is used for manual zero setting (It’sexplained in detail in Chapter 9 below), and the instrumentzero is related to the accuracy of instrument.[2-1-6: Flow User Span] Setting of flow measuring rangeof instrumentThe setting is related to the display of item 1-2-2.The parameter is used to set the flow measuring range ofinstrument.

NoteUsed range means the FLOW Rate value corresponding to20mA in case of current output (4~20mA output) or5000Hz in case of frequency output. The scope of usedrange is 0.01~200000.0.[2-1-7: Flow User Unit] Setting of FLOW Rate unit ofinstrumentThe parameter is used to set the FLOW Rate unit. Themodification of this item will cause the change of FLOWRate in the main interface. (Fluid density should be set incase of mass unit, see 2-1-3: Fluid density for details.)[2-1 -8: Total Unit] Setting of accumulative flow unit ofinstrumentThe parameter is used to set the accumulative flow unit.

NoteIf users have specified FLOW Rate unit and accumulativeflow unit in the order, these parameters will be set beforedelivery; but if not, users should set suitable parametervalue by themselves![2-1-9: Flow Damping] Setting of flow dampingcoefficient of instrument

The parameter is used to set flow damping coefficient. Thelarger the damping coefficient, the smaller the flowfluctuation, and the slower the response speed.[2-1-10: Flow Direction] Setting of consistency betweenfluid flow direction and flowtube installing directionThe parameter is used to set the consistency between fluidflow direction and flowtube installation direction.

[2-1-11: FORWARD_TOTAL_H] Setting of integer partof forward accumulationThe parameter is used to set the integer part of forwardaccumulation.[2-1-12: FORWARD_TOTAL_L] Setting of decimal partof forward accumulationThe parameter is used to set the decimal part of forwardaccumulation.[2-1-13: REVERSE_TOTAL_H] Setting of integer part ofreverse accumulationThe parameter is used to set the integer part of reverseaccumulation.[2-1-14: REVERSE_TOTAL_L] Setting of decimal partof reverse accumulationThe parameter is used to set the decimal part of reverseaccumulation.

NoteWhen accumulation should be reset to zero, it can be setmanually. For example, to reset the forward accumulation,set the forward accumulation H and forward accumulationL to zero. (Similar for the reset of reverse accumulation)[2-1-15: Dynamic Filt] Set ON/OFF of dynamic filtrationThe parameter is used to set ON/OFF of dynamic filtration.[2-2-1: Nonlinear Correction] Set ON/OFF of NonlinearThe parameter is used to set ON/OFF of Nonlinear.[2-2-2: Flow_Point_1] Setting of the first correction pointThe parameter is used to set the first correction point.[2-2-3: Flow_Factor_1] Setting of correction point 1coefficient.The parameter is used to set the coefficient of correctionpoint 1.[2-2-4: Flow_Point_2] Setting of the second correctionpointThe parameter is used to set the second correction point.[2-2-5: Flow_Factor_2] Setting of coefficient of correctionpoint 2The parameter is used to set the correction point 2coefficient.[2-2-6: Flow_Point_3] Setting of the third correction pointThe parameter is used to set the third correction point.[2-2-7: Flow_Factor_3] Setting of correction point 3coefficient.

8 10 15 20 25 3240 50 65 80 100 125150 200 250 300 350 400450 500 600 700 800 9001000 1200 1400 1500 1600 18002000 2200 2400 2600 2800 3000

Flowtube direction Fluid direction Plus/minus of flow rateForward Forward PlusReverse Forward MinusForward Reverse MinusReverse Reverse Plus


44

The parameter is used to set the coefficient of correctionpoint 3.[2-2-8: Flow_Point_4] Setting of the fourth correctionpointThe parameter is used to set the fourth correction point.[2-2-9: Flow_Factor_4] Setting of coefficient of correctionpoint 4The parameter is used to set the correction point 4coefficient.[2-2-10: Flow_Point_5] Setting of the fifth correctionpointThe parameter is used to set the fifth correction point.[2-2-11: Flow_Factor_5] Setting of coefficient ofcorrection point 5The parameter is used to set the correction point 5coefficient.

ImportantInstructions on Nonlinear• The value of instrument correction points (1~5) is theflow rate before correction of instrument, i.e. FLOW Ratewhen the correction coefficient is 1; when calibrating theinstrument, select calibration points first, input eachcalibration flow rates, and then:Qstandard /Fmeasured→Flow rate correction coefficient unit.• Use a line segment to express the correction process asshown below.

Correction coefficient can be determined by the followingtwo ways:1) Based on FLOW Rate, the calculation formula forcorrection coefficient C of each point: Correction =Fstandard/Fmeasured2) Input value into corresponding correction point andcorrection coefficient according to instrument coefficientcorresponding to calibrated flow rate points.

Calibration and characteristics of circuit board havebeen set at delivery, and it’s not allowed to modifythem during operation, or else it will directly affect themeasuring accuracy of instrument, and even cause nodisplay of instrument; new values can be set for themonly when the main board is repaired or a referenceelement is changed.

[2-3-1: 4mA calibration] 4mA calibration in currentoutput.The parameter is used to calibrate the consistency betweenthe actual output of 4mA and system output when flow rateis 0.

NoteWhen the parameter enters the modifiable state, 4~20mAoutput will output a value about 4mA, and increase or

decrease it with BACK/ or NEXT/ to make 4~20mAoutput = 3.995~4.005. (The same for 20mA calibration).[2-3-2: 20mA calibration] 20mA calibration in currentoutput.The parameter is used to calibrate the consistency betweenthe actual output of 4mA and system output when flow rateis used range. (See 2-3-1: 4mA calibration for settingoperation)[2-3-3: Fr calibration] Frequency calibration in frequencyoutputThe parameter is used to calibrate the consistency betweenactual measurement output in frequency and system output.[2-3-4: Temper calibration] Temperature calibrationThe parameter is used to calibrate the consistency betweensystem output temperature and actual temperature.[2-3-5: Factor Calibrate] Set instrument characteristiccoefficientThe parameter is used to set the consistency in flow rate ofelectromagnetic flowmeter with the same parametersettings.[2-3-7: Remain] Set discrete degree calibrationThe parameter is used to set alarm threshold for discretedegree in signal quality of electromagnetic flowmeter.[2-4-1: Device ID] Set instrument numberThe parameter is used to set instrument number whenseveral instruments communicate with computer.[2-4-2: Flow Decimal Pnt] Set the number of decimalplaces in display of FLOW RateThe parameter is used to set the number of decimal placesin display of FLOW Rate.Example: FLOW Rate is +2.1234m3/h

NoteThe FLOW Rate displayed in the display interface cancontain 6 characters at most; if the flow rate is too large,e.g. 12345,6789, and the number of decimal placesdisplayed is set to 2, 3 or 4, the FLOW Rate displayed inthe display interface is 12345.6, and excessive places arenot displayed.

Decimal places displayed FLOW Rate0 +2 m/h1 +2.1m3/h2 +2.12m3/h3 +2.123m3/h4 +2.1234m3/h

flow rate beforecorrection

Instrumentcoefficient

Flowrate

correctionpoint5

Flowrate

correctionpoint4

Flowrate

correctionpoint3

Flowrate

correctionpoint2

Flowrate

correctionpoint1


45

[2-4-3: Empty Alm] Alarm setting of empty pipe throughinstrument

The parameter is used to set whether to give an alarm whenthe pipe through instrument is empty.

[2-4-4: Sig Overflow] Set ON/OFF of signal overflowalarm

The parameter is used to set ON/OFF of signal overflowalarm.

[2-4-5: Language] Select the language used in display unit

The parameter is used to set the language of display unit.Two options: Chinese and English.

[2-4-6: System Time] Setting of date and time

The parameter is used to set date and time.

[2-4-7:Password 1] User password 1

The parameter is used to set user password 1.

[2-4-8: Password 2] User password 2


[2-4-9: Password 3] User password 3


[2-4-10: Menu Return Time] The time after which thesystem returns to the main interface without operation

The parameter is used to set the time after which thesystem returns to the main interface when staying in anon-main interface without operation.

Note

The following four options are available: 60S, 5M, 10M,Never, and it’s 60S by default.

[2-4-11: Noise Reduce] Set ON/OFF of noise suppression

The parameter is used to set ON/OFF of noise suppression.

[2-4-12: Key lock] Set ON/OFF of key lock

The parameter is used to set ON/OFF of key lock.

[2-4-13: Exci Fr] Output frequency of excitation

The parameter is used to set the frequency of excitationdriver in the excitation driver module.

[2-4-13: Record time] Set recording timeThe parameter is used to set the time interval betweenrecording points in the flow rate curve. Available options:1S, 2S, 5S, 10S, 30S, 1M, 2M, 5M, 10M, 30M, and 1H.[2-5-1: AZL] Start empty pipe auto-calibrationThe menu is used to carry out empty pipe auto-calibration.[2-5-2: Empty Factor] Set empty pipe machine numberThe parameter is used to manually set empty pipecalibration threshold.

ImportantEmpty pipe auto-calibration should be carried out with fullpipe and proper grounding. A suitable empty pipe machinenumber will be automatically written in after completion ofempty pipe auto-calibration. After calibration, the emptypipe machine number shall not be modified at will, or elseit may cause misjudgment of empty pipe.3) Instrument communication configuration modeInstrument communication configuration mode mainlyincludes MODBUS configuration, HART configuration,GPRS configuration, CAN configuration, and ProfiBusconfiguration.[3-1-1 Baud Rate] Set Baud rate of signalThe parameter is used to set the number of times for whichcarrier parameter changes in unit time. Available options:1200, 2400, 4800, 9600, 14400, 19200, 38400, and 115200.[3-1-2 Parity] Setting of check bitThe parameter is used to set the way of correcting dataerror. Available options: No check, odd check, and evencheck.[3-1-3 Data Struct] Set the data format of transmissionsignalThe parameter is used to set the data format of transmissionsignal. Available options: 2143; 4321; 1234; 3412.4) OUTPUT modeOUTPUT mode includes 4-20mA Out, Digital Out, AlarmOut, and Relay In.

Excitation frequency Application specification

3.125 Hz The lower the excitation frequency,the higher the zero stability; thehigher the excitation frequency, thestronger the antijamming capabilityof instrument; high-frequencyexcitation shall be adopted whenmeasuring slurry.

6.25 Hz

12.5 Hz

25 Hz

Zero stability

Response speed

Noise resistance

Bad

Good

Good


46

[4-1-1 4-20mAMode] Set output current modeThe parameter is used to set output current mode.

[4-1-2 4-20mADamping] Set output current dampingThe parameter is used to set the damping coefficient ofoutput current. The larger the damping coefficient, theslower the change of current output.[4-2-1 Fr/Pulse Output] Set digital output modeThe parameter is used to set digital output mode. Availableoptions: pulse output and frequency output. (When pulseoutput is selected, pulse equivalent and pulse widthshould also be set.)[4-2-2 Pulse Rate] Setting of pulse equivalent in case ofpulse outputThe parameter is used to set the volume flow rate relativeto each pulse signal.[4-2-3 Pulse Width] Setting of pulse width in case of pulseoutputThe parameter is used to set pulse width. Available options:1ms, 5ms, 10ms, 50ms, and 100ms.[4-3-1Alarm Output] Configure alarm outputThe parameter is used to set the items to be alarmed inrelay alarm output. Available options: Output disabled, anyalarm, high temperature alarm, excitation interruptionalarm, empty pipe alarm, accumulation alarm,upper/lower-limit alarm, lowermost-limit alarm,lower-limit alarm, uppermost-limit alarm, upper-limitalarm.[4-3-2 H Rate Value] Setting of high-level alarm valueThe parameter is used to set the high-level (upper) alarmlimit value with a percentage of the maximum measuringrange. When the FLOW Rate is more than the set value, therelay outputs alarm.[4-3-3 HH Rate Value] Setting of ultrahigh-level alarmThe parameter is used to set the ultrahigh-level (uppermost)alarm limit value with a percentage of the maximummeasuring range. When the FLOW Rate is more than theset value, the relay outputs alarm.[4-3-4 L Rate Value] Setting of low-level alarmThe parameter is used to set the low-level (lower) alarmlimit value with a percentage of the maximum measuringrange. When the FLOW Rate is less than the set value, therelay outputs alarm.[4-3-5 LL Rate Value] Setting of ultralow-level alarmThe parameter is used to set the ultralow-level (lowermost)alarm limit value with a percentage of the maximummeasuring range. When the FLOW Rate is less than the setvalue, the relay outputs alarm.Output examples:

Set the uppermost-limit alarm value as 110% of flow ratemeasuring range or higher; set the lowermost-limit alarmvalue as 10% of flow rate measuring range or lower; set theupper-limit alarm value as 90% of flow rate measuringrange or higher; set the lower-limit alarm value as 10% offlow rate measuring range or lower.Set as:[4-3-2 Upper-limit alarm value]=90%[4-3-3 Uppermost-limit alarm value]= 110%[4-3-4 Lower-limit alarm value]=20%[4-3-5 Lowermost-limit alarm value]= 10%

[4-3-6 FSV] Setting of accumulation alarm valueThe parameter is used to set accumulation alarm value;when alarm is configured as accumulation alarm, the batchfilling function is activated. When filling accumulationexceeds accumulation alarm value, the relay outputs alarm.See 8.2 Batch filling function for details.[4-3-7 Relay Delay Time] Setting of valve opening delaytimeThe parameter is used to set valve opening delay time,which is the time from the end of filling to the next timeready for filling when alarm is configured as accumulationalarm.[4-3-8 ON/CN] Setting of relay stateIt’s used to set relay state without alarm, normally open ornormally closed.[4-3-9 H Temper Value] Temperature alarm valueIt’s used to set temperature alarm value; when alarm isconfigured as temperature alarm or any alarm, and thetemperature exceeds the alarm value, the relay outputsalarm.[4-4-1 Relay Input] Relay InThe parameter is used to set corresponding contents incontact input. Available options: Input disabled, batchdelay start, accumulation reset, and batch external start.

Current mode Flow rate corresponding to 4mA in4~20mA output

ONE DIR 0 m3/hTWO DIR Negative used range

Flow rate percentage (%)

Alarm

Upper Lower

Uppermost Lowermost


47

5) TESTTEST includes TEST 1, TEST 2, and TEST 3.[5-1-1 4-20mATest] Debugging current valueThe parameter is used to set a value as output currentduring debugging.[5-1-2 Fr Output Test] Output frequency valueThe parameter is used to set a value as output frequencyduring debugging.

6) SYSTEM LOG modeSYSTEM LOG mode includes Modify Log, alarm log, RunLog, and flow rate curve.

[6-1 Modify Log] Record the content and time ofparameter modificationThe parameter is used to record the content and time ofparameter modification so that customers can makecorrection.[6-2 Alarm log] Record alarm informationThe parameter is used to record alarm information so thatthe company’s maintenance personnel can solve problemsbetter.[6-3 Run Log] Record the flow rate and time at startup andshutdown of TransmitterThe parameter is used to record the flow rate and time atstartup and shutdown of Transmitter so as to deal withsudden power failure better.


48

7 Alarm Function7.1 Excitation Interruption & Empty Pipe Alarm

Alarm classification: High temperature alarm, excitation interruption alarm, empty pipe alarm, accumulation alarm, lower-limitalarm, lowermost-limit alarm, upper-limit alarm, and uppermost-limit alarm.When alarm occurs, a highlighted “Alarm” is displayed at the top right corner of the first ~ fifth display interfaces, and “Alarm:Alarm content” is displayed alternately at the place where flow rate percentage is displayed.

Display interface Displayed content Remarks Output state

CoilOpen Alm state

“Alarm” is displayed at the top rightcorner, and the flow rate bar at thebottom is flickering. The flow ratebar and the alarm cause are displayedalternately.

4〜20mA output:

4 mAFrequency output: 0FLOW Rate output: 0

Empty pipeAlarm state

“Alarm” is displayed at the top rightcorner, and the flow rate bar at thebottom is flickering. The flow ratebar and the alarm cause are displayedalternately.

4〜20mA output:

4 mAFrequency output: 0FLOW Rate output: 0

Alarm: CoilOpen Alm

Alarm: Empty Alm


49

8 Actual OperationWhen the user installs a flowtube into a working pipeline, completes the wiring of input/output terminals, sets necessaryparameters, and completes zero setting before operation, the terminal of electromagnetic flowmeter will output an accurate flowsignal after the fluid measurement starts. This chapter describes zero setting operation and corresponding procedures.

8.1 Zero Setting Before Operation

YYD electromagnetic flowmeter has the function of automatic zero calibration, which can ensure a zero point below 3mm/swhen matching with different flowtubes. If the user requires a higher instrument accuracy, on-site zero setting can be carriedout after automatic zero calibration.Zero setting aims to ensure the output current is 4mA in 4~20mA output in case of zero flow rate (the output frequency is 0Hzin frequency output). Although all instruments are subjected to zero setting in the factory before delivery, zero setting must becarried out again after pipelines are installed in place in order to make electromagnetic flowmeters match with their workingenvironment.This chapter describes how to carry out automatic zero setting by using key combinations and manual zero setting by manualinput. Correspondingly, one of the methods should be selected to complete zero setting.

ImportantZero setting shall be carried out before actual operation. Note: During automatic zero setting (about 20s), the user cannotuse set and update functions.The user shall fill the flowtube with liquid (i.e. full-bore flow state), and set the zero point when the fluid velocity is zeroby closing valves.When the user changes the fluid to be measured, zero setting must be redone for the new fluid.Proper grounding shall be provided at zero setting.

8.1.1 Use the function of automatic zero setting with key combinations for zero setting

This section describes how to carry out zero setting by using the function of automatic zero setting with key combinations.(Please refer to Chapter 5: Operation of Setting Keys for more information about the use of these key combinations.)Combined setting keys for zero setting: ESC/+ENT/

Press ESC/ and ENT/ at the same time to enter theautomatic zero setting interface in the display mode(any display interface).

Zero Adjust confirmation interface.

Start:Display mode(Main interface)

Zero Adjustinterface

ZeroAdjust

YES NO


50

Zero setting interface, automatic zero setting functionrequires password, “0000” by default.

Remaining time of zero setting: 20SThe whole process lasts 20S.

Automatically return to the display mode after completionof zero setting.

8.1.2 Carry out zero setting by inputThis section describes the steps of zero setting by external state input.Zero setting by external state input must be carried out by setting “2-1-5” Instrument zero” in the zero-stable state.The steps are as follows:

Example:The zero point in the stable state is:-0.045 m3/h-0.003 m/s

NoteSee “5.4.2” for details about how to enter theparameter setting mode.

Zero settinginterface

ZeroAdjust

Password

ZeroAdjust

Adjusting

20

Zero settingRemaining time

Return to display modeafter completion ofzero setting

20s later

Start:Display mode(Main interface)


51

Return to displayinterface after

completion of manualzero setting

Manual zero setting


Basic Setup 2-1-1

Nominal Diameter

Basic Setup 2-1-5

Magflow zero

Basic Setup 2-1-5

Magflow zero

Refer to 5.5.3 for detailed steps formodification of numeric typeparameters, saving confirmation, andreturn to main interface

Return to display interface aftercompletion of manual zero setting.

This screen indicates the system hasentered the parameter setting mode.


52

8.2 Batch Filling Function

YYD electromagnetic flowmeter has the batch filling function with fast response speed and high precision, applicable to mostof filling occasions. The specific operations are as follows:

8.2.1 Wiring

Connect relay output terminal and controller or solenoid valve as per the wiring diagram (as below), and in case of batchexternal start, connect external switch and contact input terminal (customized) at the same time.

8.2.2 Parameter Setting

1. Set [4-3-1 Alarm Output] to be accumulation alarm to active the batch filling function;2. Set [4-3-6 FSV] to be the required filling volume;3. Set [4-3-8 ON/CN] to be normally open or normally closed depending on actual working conditions;4. Set [4-4-1 Relay In] to be batch delay start or batch external start;5. If the previous item is set to be batch delay start, the valve opening time delay should be set in the menu [4-3-7 Relay DelayTime].

8.2.3 Working Steps

1. Start filling after completion of parameter setting;2. When the filling quantity reaches the set value, the relay outputs signal to close the valve;3. In case of batch external start, contact input is required to reset the filling quantity, the relay resets, and the next time offilling starts; in case of batch delay start, after the time set in the menu [4-3-7 Relay Delay Time], the filling quantity is reset,the relay resets, and the next time of filling starts.


Load or solenoid valve

AC or DC power supply

Relay output


53

9 Communication9.1 Network Connection

At network connection, the communication between ultrasonic flowmeters and a computer is realized through onecommunication bus. Ultrasonic flowmeters convert measured flow signals to digital signals and send them out by adoptingMODBUS protocol, and totally 225 instruments can be connected in a network.The data updating rate and transmission distance need to be taken into consideration when applying multipoint communication.Multipoint communication is safe and reliable to operate even in those occasions with high safety requirements.The communication between computer and flowmeter needs a Transmitter with RS232/RS485 protocol, and each flowmeterhas a unique address for communication addressing.Figure 9.1 shows a typical network connection diagram.The figure is not an installation diagram, and please call us in case of any other questions.

Figure 9.1 Typical Network Connection

Copy report Print report

24VDC powersupply

(Enterprise LAN)

Network workstation

Network workstation Ethernet LAN Main controlcomputer

RS232/RS485Transmitter

RS485 bus

Relay

A relay should be added if the distance of RS485 bus is more than 1200m






54

9.2 Wiring

WarningPlease confirm the power of Transmitter and other externalinstruments has been turned off before wiring.

Figure 9.2.1 Terminal StructureSelect one of the three terminals (1 485) at the baseboard,and connect it with jumper cap.

Figure 9.2.2 Connect Upper Computer

ImportantWiring of terminals A and B shall not be reversed.

9.3 YYD Electromagnetic Flowmeter AdoptsModbus RTU Communication ProtocolPlease refer to Modicon Modbus Protocol Reference Guidefor details.

9.3.1 Query (Computer executes query operationto instrument parameters), command code: 03h

Structure of frame sent when computer submits aquery

Example: To query the accumulative flow, the computersends the following frame:

01 03 00 00 00 02 C4 0B

Structure of response frame of instrument

Byte No. Sample ofcommand byte Annotation

1 01 Device ID., i.e. slavecommunication address

2 03 Function code

3 04 Byte count of data

4 AF High-order byte H0 of data

5 D5 Low-order byte L0 of data

6 00 High-order byte H1 of data

7 1E Low-order byte L1 of data

84A

(CRCHi)High-order byte of CRC check

9D7

(CRCLo)Low-order byte of CRC check

Byte No. Sample ofcommand byte Annotation

1 01 Device ID., i.e. slaveommunication address, single byte

2 03 Function code,03H indicates query operation

3 00 High-order byte of start address ofthe parameter to be queried

4 00 Low-order byte of start address ofthe parameter to be queried

5 00 High-order byte of the quantity ofthe parameter to be queried

6 02 Low-order byte of the quantity ofthe parameter to be queried

7 C4(CRCHi)

High-order byte of CRC checkcode (16-bit) of the frame

8 0B(CRCLo)

Low-order byte of CRC check codeof the frame

Connect host computer:


R485/R232Transmitter

Computer/host computer

Grounding

Terminal structure

Power L (+)Power N (-)


55

Example: The accumulative flow of instrument is: 2011093m³

The long integer 2011093 is saved in the instrument as:

0x00, 0x1E, 0xAF, 0XD5.

Corresponding to H1 L1 H0 L0

The transmission order is shown in the structure ofresponse frame, and specific data transmitted are asfollows:

01 03 04 AF D5 00 1E 4A D7

Communication format: Baud rate 9600, 1 start bit, 8 databits, NONE Parity, 1 stop bit.

9.3.2 Table for Communication Addresses of Parameters

Unit name Communicationaddress Data type Length (byte) Storage format Unit

FORWARD_TOTAL_H 40001 Long integer 4 H1, L1, H0, L0 m3

FLOW Rate 40003 Floating point 4 H1, L1, H0, L0 m3/h

REVERSE_TOTAL_H 40005 Long integer 4 H1, L1, H0, L0 m3

Flow User Span 40007 Long integer 4 H1, L1, H0, L0 m3

Low Cut Flow 40009 Floating point 4 H1, L1, H0, L0 m3/hMeter Factor 40011 Floating point 4 H1, L1, H0, L0 /Magflow Zero 40013 Floating point 4 H1, L1, H0, L0 m3/hFlow Density 40015 Floating point 4 H1, L1, H0, L0 g/cmFlow Damping 40017 Long integer 4 H1, L1, H0, L0 /


56

10 Overview

10.1 Standard Specifications

Transmitter and FlowtubeExciting modeThe user can select exciting frequency and exciting

current depending on different media:• Exciting frequency:

3.125Hz, 6.25 Hz, 12.5 Hz, 25HZ• Exciting current:

125mAInput signal

One-way input: Passive dry contact.Load resistance: ≤750Ω (ON), ≥100kΩ (OFF).

Output signal• Current output: DC current 4~20mA (load resistance:

0～750Ω, including cable resistance)

• Pulse frequency output: Voltage 24V, output rate0.0001~5000 PPS (pulse/second), short-circuitprotection.

• Relay output: 3A, 30V.DC, 250V.ACMODBUS

• At network connection, the communication betweenultrasonic flowmeters and a computer is realizedthrough one communication bus. Ultrasonicflowmeters convert measured flow signals to digitalsignals and send them out by adopting MODBUSprotocol, and totally 225 instruments can be connectedin a network.

• The data updating rate and transmission distanceneeds to be taken into consideration when applyingmultipoint communication. Multipoint communicationis safe and reliable to operate even in those occasionswith high safety requirements.

• The communication between computer and flowmeterneeds a Transmitter with RS232/RS485 protocol, andeach flowmeter has a unique address forcommunication addressing.

• Communication distance: 1000m; if the distance ofRS485 bus exceeds 1200m, an additional relay shouldbe equipped.HART

Our HART communicator can be used to read and write theparameters of instrument remotely.HART signal is carried at DC voltage 4-20mA signal, andthe distance between output line and power line ≥ 15cm(avoid parallel wiring with power line).Communication distance: When twisted-pair is used, thecommunication distance is ≤ 1.5km (0.9 mile), whichvaries with the type of cable and the wire used.

Load resistance: 0~750Ω (including cable resistance)Cable length in specific applications:Cable length in specific applications is calculated by thefollowing formula:

Wherein:L = Length (m or ft)R = Resistance Ω (including resistance of barrier layer)C = Cable capacitance pF/m or pF/ftCf = Max. bypass capacitance of receiver pF/m or pF/ft

Data safety at power failureData (e.g. parameters and accumulations) are stored innon-volatile FRAM. Standby battery is not needed.

DisplayerFull dot-matrix LCD screen (128×64 pixels).

Electrode material316L, He, Hb, Ti, Ta, Pt, and WC, etc.

Lining materialPolytetrafluoroethylene (PTFE), polyfluoroalkoxy (PFA),fluororesin-46 (F46), polychloroprene, and polyurethanerubber, etc.

Matching flange

Customized for other standards.

Nominalpressure Applicable diameter Flange standard

4.0MPa DN8 ~ DN50 GB9119-20101.6MPa DN65 ~ ND200 GB9119-20101MPa DN250 ~ DN600 GB9119-20100.6MPa DN700 ~ DN1200 JB/T81-940.25MPa DN1400 ~ DN2000 JB/T81-940.25MPa DN2200 ~ DN3000 GB9115-2010


57

Operating pressureOperating pressure is no greater than the nominal pressureclass of flange.

Medium temperaturePTFE lining ≤120°C, PFA lining ≤130°C,F46 lining ≤120°C, chloroprene rubber lining ≤65°C,PTFE lining ≤140°C (rinsed with high-temperature steamfor 40min),PFA lining ≤130°C (rinsed with high-temperature steam for40min).

ProtectionIntegrated type: IP67:Split type: Flowtube IP68 (5m under water, only forflowtube with rubber lining), Transmitter IP67

Coating of TransmitterShell body and shell cover: Anticorrosive polyurethaneCoating color: Blue

Shell materialShell body and shell cover: Aluminum alloyFlow tube: Carbon steel, stainless steel

Installation/FormingElectronic connection: M20×1.5 internal thread, φ10 cablehole, customized for other types of connection.Terminal connection: M4 threaded terminal

GroundingGrounding resistance ≤10Ω

Assembly of split type flowtubeTransmitter can be assembled with DN8~3000 (mm) splittype flowtube for use.When the model of assembled Transmitter changes, thenew instrument coefficient must be adjusted according toflow rate calibrator.

FunctionsHow to set parameters

The user can set parameters through the LCD screen andfour mechanical buttons of the displayer, or set parameterswith infrared remote control without opening the cover(customized).

Display languageThe LCD can display in two languages: Chinese andEnglish, and the user can switch between them.

Display function (For models with display)Full dot-matrix LCD screen can display: FLOW Rate,FLOW Rate (%), FLOW Rate (bar chart), forwardaccumulation, signal quality, running state; the user canalso view reverse accumulative flow, current output value(mA), frequency output value, flow velocity, time and date,Transmitter temperature, and running curve, etc. throughUp and Down buttons.

Damping coefficientDamping coefficient can be set in the range of 1~250.

Unit setting functionThe FLOW Rate unit can be selected from: m³/h (cubicmeter per hour), t/h (ton per hour), L/h (liter per hour),Kg/h (Kg per hour), L/m (liter per minute).The unit of flow rate measuring range is volume flow rateunit: m3/h;Accumulation unit: m3, t, L, kg;Density unit: kg/m3

Speed unit: m/sPulse output

Pulse with scale can be output through setting of pulseequivalent.Pulse width: 1, 5, 10, 50, 100msOutput rate: 0.0001 ~ 100pps (p/s)

Communication settingBaud rate, check bit and data format can be selectedthrough communication setting function.Baud rate: 1200, 2400, 4800, 9600, 14400, 19200, 38400,and 115200.Check bit: No check, odd check, and even check.Data format: 2143, 4321, 1234, and 3412.

Forward and reverse flow rate measuring functionThe flowmeter can measure forward and reverse flow rate.Reverse flow rate measurement can be confirmed by stateinput and displayer.

ONE DIR / TWO DIR output function:The user can switch between one-way and two-dir output.Two-dir output 0~20mA (0~5000Hz) corresponding to (-used range ~ + used range)

Batch filling function(FSV)When the accumulation reaches the preset value, the outputstate of relay is output, and meanwhile the batchaccumulation is reset to zero.

Preset accumulationThe parameter setting or state input function allowspresetting the accumulation to be a set value or zero.


58

0% Signal lockState input forcibly locks the displayed FLOW Rate,frequency output, current output, and flow accumulation to0%.

Alarm selection functionAlarm is divided into system alarm (hardware failure),process alarm (e.g. “empty pipe” and “excitationinterruption”), setting alarm, and warning. The user canselect whether to give an alarm for an item. The currentoutput of alarm can be selected as ≤2.4mA, fixed at 4mA,or locked.

Alarm outputGive state output in case of failure for alarm items selectedin the alarm selection function.

Self-diagnosis functionIn case of an alarm, it displays alarm time and alarmcontent.

High-level/low-level alarm of flow rateAn alarm is given when the flow rate is more than or lessthan the set value. In addition, two high-level limits (H andHH) and two low-level limits (L and LL) can be set. Whenthe flow rate is more than or less than any set value, thestate is output.

Electrode impedance diagnosis functionThis function allows monitoring the degree ofcontamination of electrodes and insulating materials, anddepending on the situation of contamination, the stateoutput gives a warning or alarm to the user, and now theelectrodes should be decontaminated.

Slurry measuring functionThe flowmeter can measure ore pulp, coal slurry, mud,mortar, paper pulp, and other slurries by setting the excitingfrequency to 25Hz.

Low-electric-conductivity measuring functionThe flowmeter can measure liquid with the electricconductivity as low as 3μs/cm by setting the excitingfrequency to 25Hz.

10.2 Standard Performance

Standard operating conditionsGB/T 18659-2002GB/T 18660-2002* Fluid temperature: 20°C±10°C*Ambient temperature: 25°C±5°C* Preheating time: 30min* Straight pipe section:

Upstream> 10xDN* Correct grounding* Correct centering

Accuracy (Operating under standard conditions)Pulse output

Match with DY1000/DY100H flowtube

Flow velocity percentage

Match with DY100C flowtube


Match with DY3000/DY300W/DY300J flowtube


Diameter mm Velocity V(m/s) Accuracy

8 ~ 3000V<0.4 (±2mm/s) /V0.4≤V≤12 ±0.5% of velocity


200 ~ 3000V<0.4 (± 6mm/s) /V0.4≤V≤12 ±l.5% of velocity


8 ~ 300V<0.4 (±l.2mm/s) /V0.4≤V≤12 ±0.3% of velocity

Accuracy

Accuracy

Accuracy

Frequencypulse

outputaccuracyFrequency

pulseoutputaccuracy

Frequencypulse

outputaccuracy


59

Current output: Pulse output accuracy plus 0.05% offlow velocityMeasurable range of flow velocity: 0.02m/s~12 m/sMax. power consumption: 10WInsulation resistance

The resistance between power wiring terminal andgrounding terminal is 100MΩ/500V DC.The resistance between power wiring terminal and eachinput/output/exciting current terminal is 100MΩ/500V DC.The resistance between grounding terminal and eachinput/output/exciting current terminal is 20MΩ/500V DC.The resistance between input/output/exciting currentterminal is 20MΩ/500V DC.

Dielectric strengthThe flowmeter can, in idle state, withstand the followingsinusoidal AC test voltages with the frequency of 50Hz andleakage alarm of 10mA in the dielectric strength test for1min without breakdown and flashover, etc.

AttentionPlease observe the following precautions when performingdielectric resistance test or withstand voltage test:

When carrying out relevant tests, remove the shellcover at least 10min after the power is turned off.Remove all wires from terminals before testing.After testing, discharge resistor must be used fordischarging, and all wires and short bars shall bereplaced at correct positions.Tighten screws with a torque of 1.18N·m or above.Recover power after the shell cover is closed.

10.3 Normal Operating EnvironmentAmbient temperature: -40°C〜+60°C

Working temperature range of displayer: -20°C~+60°CMedium temperature: PTFE lining ≤120°C, PFAlining ≤130°C, F46 lining ≤120°C, chloroprene rubberlining ≤65°C, PTFE lining ≤140°C (rinsed withhigh-temperature steam for 40min), PFA lining≤130°C (rinsed with high-temperature steam for40min).When using 24V DC power supply, the maximumambient temperature shall be 50.

Ambient humidity: 0～100%. It’s recommended notto continue using the instrument for a long time underthe environment with relative humidity ≥95%.

Power supply

1: Rated voltage: 100～240VAC, 50 Hz

(Working voltage range: 80～265VAC)

2: Rated supply voltage: 24VDC

(Working voltage range: 20.4～28.8VDC)

VibrationThe vibration class must meet IEC60068-2-6.(SAMA31.1-1980) ≤1 G(Frequency ≤ 500Hz)Note: It shall be avoided to install the device on the groundwith strong vibration (vibration frequency ≥500Hz), or thedevice may be damaged.

10.4 Accessory

Internal hexagonal wrench: 1 piece.

Type Testingterminal

Test voltage (Effective value)Power supply: AC 220V,

50HzPowersupply:DC12V,24V,36V

Sinusoidalwave

excitation

Low-frequencyrectangular waveexcitation

Flowtube

Excitingterminaland

electrodeterminal

1500V 500V 500VExcitingterminaland shell

Electrodeterminaland shell

TransmitterPowerterminaland shell

1500V 500V


60

11 Explosion-proof InstrumentThis chapter further introduces more requirements forexplosion-proof instruments and the differences from otherinstruments.

Warning• YYD electromagnetic flowmeters have been certified

as explosion-proof instrument. Strict rules arespecified in terms of instrument structure, installationplace, external wiring, maintenance and repair, etc.Please be careful. Violation of these rules may causedanger.

• Before operating the instrument, please read over thecontent of this chapter.

• For explosion-proof instruments, the descriptionsgiven in this chapter take precedence over others inthis manual.

WarningThe terminal box cover and the display cover are lockedwith special bolts. Please use the attached hexagon wrenchwhen opening the covers. All covers of explosion-proofproducts are locked. Please use the attached hexagonwrench to open and close shell covers. Before openingshell covers, please be sure that the flowmeter is poweredoff. Please be sure to lock the shell covers again whenclosing them. Please be sure to use the attached hexagonwrench and special bolts to lock shell covers after tightlyclosing them.

11.1NEPSI

WarningOnly professional engineers or technical personnel can usethe instrument in industrial fields.(1) Technical dataApplicable standards: GB3836.1-2010

GB3836.2-2010GB3836.3-2010

Certifications: GYB13.1052XGYB13.1060X

Ex d e ia II C T4 -T6 Gb

Ex d ia mb II C T4 〜T6 Gb

Max. supply voltage: 250V.AC/28V.DCExciting voltage: Max. 40VProtection class: IP67, IP68Ambient temperature: -40°C~+60°C(2) Installation

Warning• All wiring needs to meet installation requirements andelectric specifications in the field.

GB3836.9-2006GB3836.4-2010

• In hazardous environment, cables of access equipmentneed to meet NEPSI fire-proof standard, apply toapplication conditions, and be properly installed.

• Holes not used need to be filled with blank plugscrews that meet explosion-proof requirements.

(3) Operation

Warning• The covers can be opened 20min after power off.• When touching the instrument and peripheral

equipment at dangerous areas, please take care not toproduce mechanical spark.

(4) Maintenance and repair

WarningAny modification of the instrument or replacement ofinstrument parts performed by anyone other than ZhejiangDiyuan Instrument Co., Ltd. or its authorized agents isprohibited and will be deemed to be invalid.


61

12 Maintenance and Fault Diagnosis

12.1 Daily Maintenance

1) Perform the periodic visual inspection, keep the surroundings of the instrument clean and tidy, and avoid water enteringthe lead end of instrument.

2) Check and make sure the instrument wiring is OK.3) Check whether there is any newly installed equipment with strong electromagnetic field near the meter or wires running

across the meter.4) Clean the measuring tube and remove the scale inside periodically, to prevent the measured medium from contaminating

electrodes and prevent sediment, scaling and contamination on the inner wall of the measuring tube.

12.2 Fault Diagnosis

Under normal operating conditions, breakdowns are rare for electromagnetic flowmeters. However, improper installation ofinstrument and pipe may cause failure of flowmeter, and in this case, check whether the flowmeter is damaged externally,whether cable is well connected, whether the network voltage is normal, whether the pipe leaks or is not filled with medium,and whether the insulation between excitation coil and shell of flowtube is good; please do not disassemble and repair theflowmeter blindly.Failures of electromagnetic flowmeter shall be handled by professional maintenance personnel. In case of any failure, pleasecontact us or directly send the flowmeter to our company for repair.


62

12.2.1 No Indication

* Note: For integrated type flowmeters, electrode wires are red wire and blue wire, and the grounding wire is black wire; forsplit type flowmeters, electrode wires are black wire and white wire, and the grounding wire is outer shielding wire of cable.

Start

Display or not? Check display ofTransmitter

Display or not

Yes

No

NoYes

Display error or not

Is the arrow on the flowtubeconsistent with the flowdirection of medium?

Check whether the flowtube is filled with

Yes

Is the flowtube filled withliquid?

Yes

Check the resistance among red, black and bluesignal terminals of flowtube with multimeter

Check the resistance among red, black and bluesignal terminals of flowtube with multimeter

Resistance between electrode wire andgrounding wire>10 MΩ;

Resistance between two electrodewires>10KΩ? *

Remove the flowtube and check the inside ofi

Foreign matters attached to inner pipe wallor not

Yes

No

Yes

Clear foreign matters

Fuse blown or notNo

Yes

Restore display or notafter fuse is replaced

End

Check as per 7.1: Alarm

No

No

No

Perform one of the following operations:Make the arrow consistent with the flowdirection.2) Change the item “Fluid reversed” inthe parameter setting mode.

Change the pipeline or installationposition to make flowtube filled withliquid.

Contact with the after-sales service center

No


63

12.2.2 Zero Point Unstable

Start

Check whether the flowtube is filled with fluidand whether there is bubble in the fluid

Is the flowtube filled with fluid?

Is there bubble in the fluid?

No

Yes

No

Check whether the valve leaks

Yes

YesDoes the valve leak?

No

• Confirm the grounding condition offlowmeter

• Confirm whether grounding wire isdisconnected from grounding flange

No

Yes

Is the flowmeter well grounded?

Check the measured fluid again

YesDoes the electric conductivity of fluid change?Is the conductivity of fluid in the limit range?

No

No

No

Is there deposit in the fluid?

Is the flowmeter close to electric motor,transformer, or other electrical equipment?


Pay special attention to horizontal installationof instrument; adjust the installation positionor change to vertical installation to ensure theflowtube is filled with fluid.

Install a bubble removing device at theupstream side of flowtube

Replace valve

Ground Transmitter and flow tube completely(Refer to the grounding-related part in theuser’s manual)

1.Ensure that the electric conductivity of fluidchanges in a minimized range.

2.Do not use the instrument with the electricconductivity of fluid beyond the limit range.

3.Reduce flow velocity at the lower limit ofelectric conductivity where possible.

1.Remove waste water and scale on and nearelectrodes

2.Wipe out dirt with soft brush and do not scratchthe lining.

Shield the instrument fully, or keep it as faraway from electrical equipment as possible

Yes

Yes


64

12.2.3 Indication Inconsistent with Actual Flow Rate

* Note: For integrated type flowmeters, electrode wires are red wire and blue wire, and the grounding wire is black wire; forsplit type flowmeters, electrode wires are black wire and white wire, and the grounding wire is outer shielding wire of cable.

Start


Remove the flowtube and inspect insulationresistance

Are parameters set normally? Set parameters correctly.

Check the flowtube for full-bore flow,bubble, and grounding condition.

Is zero setting correct? Zero setting is carried out when theflowtube is filled with fluid and fluid is not

Is the flowtube filled with liquid?

No

No

No

No

No

Yes

No

Yes

Yes

No

Yes

Yes

Yes

Yes

Yes

No

No

No

Yes

Is there bubble in the fluid?

Is the flowmeter well grounded?

Is the terminal treatment ofsignal cable good?

Is the electric conductivity in the limit range?

Is there deposit in the fluid?

Check whether there is a valve at the upstreamside near to the flowtube?

Is there a valve at the upstream side of theflowtube?

Change the installation position orreplace pipeline to make flowtubefilled with liquid.

Install a bubble removing device at theupstream side of flowtube

Ground Transmitter and flow tube completely

Carry out terminal treatment to signalcable with PVC casing or insulating tapeto avoid contact among wires, innershielding layer, outer shielding layer, andshell.

1.Remove waste water and scale on andnear electrodes

2.Wipe out dirt with soft brush and do notscratch the lining.

Use the instrument in the specified range ofelectric conductivity

Resistance between electrode wire andgrounding wire>10 MΩ;

Resistance between two electrodewires>10KΩ? *

Dry the flowtube to restore its insulation.

If a valve at the upstream side near tothe flowtube is semi-open, thereading of instrument may bedisturbed.Remove the valve the downstreamside of flowtube.If the valve must be installed at theupstream side of flowtube, thedistance from the flowtube is at least10 times of the flowtube diameter, orthe valve is completely open.


65

Annexes: Reference Flow Rate RangeTransmitter model Diameter Flow rate accuracy range (m3/h) Measurable flow rate range (m3/h)

AF3(Guaranteed accuracyrange 0.4m/s-12m/s,Measurable flow raterange 0.02m/s-12m/s)

8 0.07 2.17 0.004 2.1710 0.1 3.4 0.01 3.415 0.3 7.6 0.01 7.620 0.5 14 0.02 1425 0.7 21 0.04 2132 1.2 35 0.06 3540 1.8 54 0.09 5450 2.8 85 0.14 8565 4.8 143 0.2 14380 7 217 0.4 217100 11 339 0.6 339125 18 530 0.9 530150 25 763 1.3 763200 45 1357 2.3 1357250 71 2121 3.5 2121300 102 3054 5.1 3054350 139 4156 6.9 4156400 181 5429 9.0 5429450 229 6871 11 6871500 283 8482 14 8482600 407 12215 20 12215700 554 16625 28 16625800 724 21715 36 21715900 916 27483 46 274831000 1131 33929 57 339291200 1629 48858 81 488581400 2217 66501 111 665011500 2545 76341 127 763411600 2895 86859 145 868591800 3664 109931 183 1099312000 4524 135717 226 1357172200 5474 164217 274 1642172400 6514 195432 326 1954322600 7645 229361 382 2293612800 8867 266005 443 2660053000 10179 305363 509 305363


Printed in March 2016

Documents

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