LWGY Series Turbine Flowmeter Instruction Manualaccurateflowmeters.com/a/pdf/turbine fm (4).pdf · LWGY Series Turbine Flowmeter Instruction Manual ... Instruction Manual of Model

LWGY Series Turbine Flowmeter

Instruction Manual

ISO 9001-2008 Certified Company

Accurate Flowmeters & Instrumentation Pvt. Ltd.(Formerly RR Flowmeters Pvt. Ltd.)

2 | Instruction Manual of Model LWGY Flowmeter

CONTENTS

1. Summary

1.1 Attention to transportation 3

1.2 Attention to storage 3

1.3 Attention to installation place 3

1.4 Attention to limited using of wireless transceiver 4

1.5 Attention to installation of explode-proof flowmeter 4

2. Technique Performance

2.1 Technique performance of turbine flowmeter 4

2.2 Technique performance of LRT-I displayer (Supplied by lithium battery) 6

2.3 Technique performance of LRT-II displayer (outside supply) 6

3. Structure and Working Theory

3.1 The basic structure of turbine flowmeter 7

3.2 Working theory 7

4. Outline Size and Installation

4.1 Outline size 8

4.2 Installation 10

5. Wiring

5.1 Wiring of amplifier and field meter 12

5.2 Practical example 13

6. Installation and Operation of LRT-I and LRT-II Displayer

6.1 The installation of LRT-I and LRT-II displayer 14

6.2 Structure and function of displayer 15

6.3 Content of display section 16

6.4 Parameter setting 17

6.4.1 Change common mode to setting mode 17

6.4.2 Parameter code and setting of data 18

6.5 List of error code 22

6.6 Replacement of lithium battery (LRT-I) 22

7. Maintain of Transducer and Revising of K-Factor 22

8. Errors and Troubleshooting 24

Instruction Manual of Model LWGY Flowmeter | 3

1. Summary

This manual contains the standard technique specification, model, installation, operation and maintenance of LWGY turbine flowmeter. Please read the manual before using the meter. But there are neither different features of different users nor technique specification of every time or structure because some amendments will not affect the function and operation of the meter.

Model LWGY turbine flowmeter can measure low viscous liquids, both Flowrate and Total flow. It can be widely used in the fields of Petrol, Chemical industry, Metallurgy, Scientific Research Institutes, etc., for measuring and / or control of liquids flow.

Several output and display methods can be selected (detailed in the table of model code). The executed standard number of the product is: ZB N12 005-1989

1.1 Attention to transportation

In order to prevent it from being damaged, do not open the package until reach the using place.

1.2 Attention to storage

Install the instrument in time. As for LRT-I, which is supplied by battery, before using it you should put the power contact pin on position “OFF” lest the power consumption should affect the using life of the battery.

If need storage, pay attention to following items:

a) If it is possible, deposit it without opening package.b) If having opened or used the instrument, please insert the LRT-I power jumper at the position

“OFF”, and use the original package.

The conditions of storage place:

a) Rainproof and damp-proofb) Avoid collision or shockc) Temperature is between -30 to +60°C. Ideal temperature is about 25°C.d) If deposit it outside, you may affect the performance. So install it as soon as possible.

1.3 Attention to installation place

The designing of the meter has considered the case under vile environment. But to keep its long accuracy and stability, when select installation place you must pay attention to following items:

Ambient temperature: Avoid installing it at the place where the ambient temperature is changeable strongly. There should be measures of heatproof and ventilation if there is heat emission.

Ambient atmosphere: Avoid installing it at place where is full of causticity air. If must, supply ventilation measure.

Mechanical vibration and shock: Although the instrument is very solid when install it you should avoid mechanical vibration and shock. And if you install it on much bigger pipe, support the pipe.

Others: There should be enough room surrounding the instrument to install and maintain it easily.


1.4 Attention to limited using of wireless transceiver

The electrical part of flowmeter can resist high frequency electrical noise interference. However, if you use wireless transceiver too close to the instrument, the high frequency noise interference will affect the instrument. Check the installation place to see if the instrument is affected by the transceiver (move the transceiver to the instrument from some miles away). If so, put the transceiver away from the place.

1.5 Attention to installation of explode-proof meter

The designing of the flow meter can be used in dangerous area class 1 and 2 which is set by “d” and “i’ standard.

2. Technique Performance

2.1 Technique performance of turbine flowmeter

The nominal diameter, flow range, liquid temperature, nominal pressure, ambient temperature, humidity and maximum pressure loss of turbine flowmeter is in table 2-1 while model and specification code is in table 2-2.

Table 2-1

Nominal DiameterDN(mm)

Range (m3/h)Liquid

Temperature(°C)

Nominal Pressure

PN (MPa)

Ambient Temp.

(°C)

Humidity(%)

Max. Pressure

Loss(MPa)

Error0.2%*

Error0.5%

Error1%

Min. Max. Min. Max. Min. Max.

2* 0.03 0.16

-20 to

+120

6.3

-25to

+55≤ 80

0.15

4* 0.04 0.25 0.12

6 0.1 0.6 0.1 0.66.3162532*

0.08

10 0.25 1.2 0.2 1.2 0.05

15 1.2 6 0.6 4 0.6 60.035

25 2 10 1.6 10 1 10

40 4 20 3 20 2 201.62.5

0.025

50 6 40 4 40 4 40

80 16 100 10 100 10 100

100 25 160 20 160 20 2001.62.5150 50 300 40 300 40 400

200 150 750 100 600 80 800

250* 200 1000 160 1000 120 12001.6

300* 260 1600 180 1800

Note: “*” means special order


Table 2-2: Model and Specification Code

Model Specification Code DescriptionLW..................................................................... Turbine Flowmeter

TransducerFor Liquid

G........................................................Y………………………….....

Nominal Diameter

2* ...................................4* ...................................6 .....................................10 ...................................15 ...................................25 ...................................40 ...................................50 ...................................80 ...................................100 .................................150 .................................200 .................................250 .................................300 .................................

2mm (PT G3/8”)4mm (PT G3/8”)6mm (PT G3/8”)10mm (PT G1/2”)15mm (PT G1”)25mm (PT G11/4”)40mm (Flange)50mm (Flange)80mm (Flange)100mm (Flange)150mm (Flange)200mm (Flange*)250mm (Flange*)300mm (Flange)

Type CodeA ............................B ............................C ............................

Accuracy 1%Accuracy 0.5%Accuracy 0.2%*

Output Signal

P .........................I ..........................T .........................M ........................

PulseAnalog 4 to 20mATotal display (Battery. for 2 to 3 years)Pulse out / 4 to 20mA out and LCD display (Intelligent)

Diameter Pressure

C1 .................C2 ..................C3 ..................C4 ..................C5 ..................C6 ..................C7 ...................

PN1.6MPaPN2.5MPaPN4.0MPaPN6.3MPaPN16MPa (Diameter≤25mm)PN25MPa (Diameter≤25mm)PN40MPa* (Diameter≤25mm)

Explode Request /NE/EX

Not ExplosiveEx ib I or Ex dIIBT4

Range of Temperature /NT/HT

Normal Temperature (<120°C)High Temperature (≥120 to 150°C)

Special Option / e.g.: High Temperature, Erode-resistant, Wearable etc.

Note: 1. The dimensions of connecting flange are in accordance with DIN 2. Mark “*” means special order. 3. Example: LWGY-50AIC2/EX/NT. The means Turbine flowmeter, DN50, Accuracy ± 1.0%, 4 to 20mA

analog output, nominal working pressure is less than 2.5MPa, Explosion-proof, normal temperature.


2.2 Technique performance of LRT-I displayer (Supplied by Lithium Battery)

Accuracy : Instant rate: 0.5%, Accumulated rate: 0.1%

Ambient temperature : -20 to +55°C

Medium temperature : -20 to +120°C (Decide medium temperature by explode temperature section)

Ambient humidity : Humidity 5 to 100% (Avoid dew)

Case material : Aluminum alloy

Power : 3.6 V Lithium battery (for 2 to 3 years)

Display : 6 LCD and project unit display Rate%, instant rate, six combined display mode

Output : No output

Memory function : Power-down, retain all the data

Error revising : 5 point (4 section) subsection revising

Shielded class : IP65, water-proof, dust-proof

Ex-proof appliance class : Ex ib I or Ex dIIBT4

Weight : 1.5 kg

2.3 Technique performance of LRT-II displayer (outside supply)

Accuracy : Instant rate: 0.5%, Accumulated rate: 0.1%

Ambient temperature : -20°C to 55°C

Medium temperature : -20°C to 120°C (Decide medium temperature by explode temperature section)

Ambient humidity : Humidity 5 to 100%(Avoid dew)

Case material of amplifier : Aluminum alloy

Power : +24 V DC

Displayer : 6 LCD and project unit display, Rate%, instant rate, six combined display mode

Output : Pulse 4 to 20 mA Analog

Memory function : Power-down, retain all the data

Error revising : Subsection revising

Shielded class : IP65, water-proof, dust-proof

Ex-proof appliance class : Ex ib I or Ex dIIBT4

Weight : 1.8 kg


3. Structure and Working Theory

3.1 The basic structure of turbine flowmeter

The brief structure of transducer is shown in Fig 3-1. It is mainly composed of housing units, rotor units, front and rear guide assembly, clamp ring and electro-magnetic amplifier.

Ampl i f i er

Body Pr e- suppor t Rot or Rear - suppor t Ri ng

Fig 3-1, The basic structure of turbine flowmeter

3.2 Working theory

As liquid running through the transducer, the rotor rotates with the help of the kinetic energy of the fluid and periodically to alter the magnetic resistance of the electro-magnetic converter. Then the magnetic flux density of the pick-up coil is altered by the passage of the magnetic blade. This change generates a pulse signal that is amplified by an amplifier and transmitted to an electric instrument to indicate or totalize the flow rate of liquid.


4. Outline Size and Installation

4.1 Outline size

a) DN2 to 25 turbine flowmeter (Nominal pressure is PN6.3MPa Fig 4-1, table 4-1)

Table 4-1Nominal DiameterDN(mm)

SizeWeight

(kg)GI

(mm)L (mm)

2*, 4*, 6 G 3/8” 11 50 0.510 G 1/2” 16 60 0.615 G 1” 18 75 1.025 G 11/4” 23 100 1.5

Note: Mark “*” means special order

Fig 4 - 1, DN2 to 25(Nominal pressure PN 6.3MPa) Outline

b) Nominal diameter DN2 to 25 high-handed turbine flowmeter (Nominal pressure PN16, 25, 32MPa as Fig 4 - 2, Table 4 - 2)

Fig 4 - 2, DN2 to 25

(Nominal pressure PN16, 25, 32MPa) outline

Table 4 - 2

Nominal diameter DN (mm)

Size (mm) Weight (kg)L0 L D0 D M

2, 4, 6 42 82 12 6 M 18 × 1.5 0.810 55 97 16 10 M 22 × 1.5 1.015 75 126 25 15 M 33 × 2 1.525 100 155 32 25 M 42 × 2 2.0


c) Nominal diameter DN40 to 300 Turbine Flowmeter (as Fig 4-3, Table 4-3)

Table 4 - 3

Nominal diameterDN (mm)

Size (mm) Weight (kg)D1 D2 d N L

40 145 11018

4140 7

50 160 125 150 880 195 160

8

200 10

100 215(230)

180(190)

18(22) 220 12

(13)

150 280(300)

240(250) 22

(26)

300 16(17)

200 340(360)

295(310)

12360 19

(20)250 405 355

26400 73

300 460 410 420 85Note:

1. The dimensions of connecting flange are in accordance with JB / T81-1994 or JB / T9119-2000.2. As to nominal diameter DN40-80, the dimensions of connecting flange of pressure capacity PN=1.6

and 2.5MPa are the same. But for DN100-200, the flange dimensions of 2.5MPa are shown in brackets.

3. Ordinarily, the products are equipped with 1.6MPa flanges.

Fig 4 - 3, DN 40 to 300, Outline


Fig 4-4, LRT-I displayer outline Fig 4-5 LRT-Ⅱ displayer outline

4.2 Installation

1. Installation area

The transducer should be used under the operating condition with the measuring medium temperature from -20 to +120℃ and ambient relative humidity no greater than 80%. Avoid installing the transducer in a corrosive atmosphere. Select an area subject to minimalize mechanical vibration or impact shock, minimalize thermal radiation, minimalize magnetic field. If the transducer is subject to the strong magnetic field, it is recommended that shield must be covered on the preamplifier.

2. Installation direction

The transducer should be installed horizontally. The flow direction of fluids should be in accordance with the arrow point, which is on the label of the transducer for indicating the flow direction.

3. Piping

(1) For inevitable reason from installation point of view, install a fluid vibration-damping device such as strainer on the upstream side of the transducer. The upstream and downstream straight pipe requirements are generally recommended that the straight pipe 15-20 times as long as the inner pipe diameter upstream of the turbine flowmeter and 5 times as long as the inner pipe diameter downstream of the turbine flowmeter.

The length of the straightener installed on the upstream and downstream sides of the turbine flowmeter following as Fig 4-6.

Fig 4-6 Straight pipe demand


If a reducer is installed on the upstream of the pipeline: L=15DIf a single elbow is installed on the upstream of the pipeline: L=20DIf two elbows are installed on the upstream of the pipeline: L=25D (on the same plane) L=30D (on the different plane)If a right angle elbow is installed on the upstream of the pipeline: L=40DIf a shut-off valve is installed on the upstream of the pipeline: L=20D(the valve open fully) L=50D(the valve open partially)

And more, a rectifier composed by lead pipe should be installed in the straightener, which is on the upstream side of the transducer in order to clean the vortex efficiently and raise the accuracy of the transducer. After installing the rectifier, the length of straightener is (10 to 20)D

(2) A strainer with 3-9 mesh/sq. in. Screen should be installed in the pipeline before the front straightener, which is on the upstream side of the transducer in order to clean the liquid impurity, ensure the proper function and durability of the transducer. Generally, if the diameter is big the bean size is rare and the diameter is small the bean size is dense. You should select the bean size of strainer according to actual case in order to ensure the normal function of the transducer.

(3) When joint the imported flange of the transducer, you must note that there is no prominent part in the pipe and the two flanges must inosculate fully. The gasket cannot expose in pipe. The eccentric adapter will cause the flow non-uniform distribution, so do not use.

(4) In order to ensure the need of overhauls under the working condition, cut-off valve should be placed around the pipeline of transmitting instrument and by-pass pipeline also should be established. The flow control valve must be established in sensor’s downstream. When use the sensor, the cut-off valve in the upstream must be opened fully to avoid the fluid turbulization phenomenon on the upstream part.

(5) If the flow range of the transducer is oversized (surpasses the upper limit), the bearing will wear quickly because of the excessive rotational speed. Therefore, when you estimate it will be oversized you can regulate the fluid rate with the control valve, which is in the downstream part.

Fig 4-7 Match air separator and strainer Fig 4-8 Rectifier

(6) Because the air in the pipeline will bring big error to the measurement of the transducer, when install it you should pay attention to whether there is air in the measuring liquid, especially for the measurement of high-gravity oil you should install air separator. And install the pipeline


of the separator tipsily to avoid air stockpile. Besides, pay attention to the control of the back pressure of the downstream. Count the back pressure as following formula:

Pa≥ 2 △ P + 1.25Pv

In this formula, Pa – Back pressure of downstream; △P – Pressure loss of transducer at maximum flow rate; Pv – Saturation vapor pressure of medium at maximum using temperature.

(7) When install the transducer on new pipeline, you should use a blank pipe instead of the transducer to move for a period of time and confirm the impurity has been excluded to avoid them moving into transducer.

(8) When install nominal pressure PN16, 25MPa transducer, you should coat a few lubricating oil on the cutting edge of the sleeve chuck, nut’s thread and each contact spot. Then cover the nut and sleeve chuck on the pipe according to the order, insert the pipe on the awl hole base of the transducer coating, put the sleeve chuck, move the pipe with tightening the nut until it can not move and at last tighten the nut for 1-1.5 circle again.

5. Wiring

5.1 Wiring of amplifier and scene display meter

A. Wiring of pulse output amplifier ( LWGY - ooooP ) The output signal is transferred by three-core cable. You’d better use the more delicate stranded

wire. When welding or wiring, pay attention to the neighboring end will not short-circuit. As figure 5-1 shows.

+5- 24V DC 3 2

4 1

PULSE

0V

a)Aviation Plug (thrum needs tin welding) b) Explode-proof Pulse Output

Fig 5-1 Wiring of pulse output amplifier

w Power: VDD +5 to +24VDC

wOutput frequency: (At flow rate down limit ) more than 20Hz.

Low pwl: 0 to 0.5V(Push-pull output)

High pwl: (VDD-2)V (Push-pull output)

w Ambient temperature: -250C to +550C

wHumidity is not more than 80%


B. Wiring of 4 to 20mA analog output converter ( LWGY - ooooI ) 4 to 20mA analog output connection as Fig 5-2. Actual load can be flow-integrating instrument, PLC, counter and computer etc.

Fig 5-2 4 to 20mA (two-wire system)

C. Wiring of LRT-II displayer ( LWGY - ooooM ) Two-wire system electricity output as Fig 5-3 and three-way pulse output as Fig 5-4.

Fig 5-3 Analog out wiring (two wires system)

Fig 5-4 Pulse out wiring (three wires system)

5.2 Practical example

A. Wiring of pulse output amplifier and flow controller. The connection of pulse output amplifier and flow controller as Fig 5-5.

Fig 5-5, The connection of pulse output amplifier and flow controller


B. Wiring of 4 to 20mA analog output converter and flow controllerThe connection of 4 to 20mA analog output converter and series flow controller as Fig 5-6.

Fig 5-6, The connection of 4 to 20mA analog output converter and series flow controller

6. Installation and Operation of LRT-I and LRT-II Displayer

6.1 The installation of LRT-I and LRT-II displayer

LRT-I and LRT-II displayer and turbine flowmeter connected by M14×1screw thread. You should tighten the screw thread as much as possible otherwise the frequency signal may be lost and cause measuring error.

As for LRT-I, if you want to change the direction of the monitor, loose the tightened nut of the fixed mini-connector and do not back out too much. Then move the meter head less than 360 degree until it reaches the ideal direction. At last, tighten the nut again. But for LRT-II, you can change the direction only by M14×1 screw not more than half circle. When finished, tighten the nut.

As for LRT-I meter which is supplied by battery, open the front cover pull out the power jumper from “OFF” position to position “ON". After that you can operate the meter.

Fig 6-1 Switch “on” to LRT-I


6.2 Structure and function of the displayer

This chapter contains display content and parameter setting steps of displayer ( LWGY - ooooM ). The panel is as Fig 6-2.

É Ïº £º ×¼ ª× Ô¶ »̄ Ò̄ Ç± íÓ ÐÏ Þ¹ «Ë ¾

FLODSPJ oul e

%scf gal bt Nm kg/ h/ m3

SET SFI FE I NC

3

1

2

4

5

6

Fig 6-2 Panel of displayer

The contents displayed by intelligent meter liquid crystal are digital, percentage and project unit.

If you want to set a project unit, which is not in the display content, just stick the sign mark of this unit on the right part of the display window. You can set each parameter by using setting keys [SET], [SHIFT], [INC] etc.

Table 6-1 Types of display unit

DisplayUnit Direction

% Percentagel Print

t TonNm3 Standard cubic

meterm3 Cubic meterkg Kilogram/h Per hour/m Per minute

Table 6-2 Names of parts of the panelItem Direction

1 Display part : Display data, unit and number of parameter setting items2 Setting part : Setting parameter item and data of parameter (using SET, SHIFT, INC key

to set)3 Stick unit tag if set unit that outside the monitor4 Decimal point5 Determine a parameter setting number or a sign mark of parameter data6 Setting key


6.3 Content of display section

There are three modes of displayed content:

Table 6-3 Names of mode

No. Mode (state) name

Operation of keys Displayed content

1 Common mode

- Can display instant flow or integrated value

2 Setting mode SET Determine parameter content or revise data with setting part. Press SET key to enter to setting mode.

3 Alarm num-ber

Display mode

- When there is alarm in the common mode, this mode will replace. The number of alarm shows the content (about 2 seconds), then display the normal data(about 4 sec-onds).The two modes replace in turn.

Note: The system shown by mode is in state of related setting or displaying

In common mode (state), it can display instant flow or accumulated flow. There are 6 display modes in common mode as fig 6-4.

Table 6-4 Display mode symbol

Symbol Name Content0 % display mode Instant flow by 0.0% to 110.0% display1 Display by mode of measurement

unitDisplay instant flow shown by measurement unit with 0-32000

2 Accumulated flow display mode Display accumulated flow by 0-9999993 Display flow (%) and accumulated

flow in turnDisplay instant flow (%) and accumulated flow (project unit) in turn

4 Display instant flow and accumu-lated flow in turn

Display instant flow (project unit) and accumu-lated flow (project unit)

5 Display instant flow and % in turn Display flow % and instant flow shown by project unit

* The position of point determined by setting of measuring range.


Table 6-5, Display mode changes the number

No. Operation key Display Direction

0Common mode

e.g. : Integrated value

1 SET General mode

Press SET key to enter to setting mode

Parameter number is changeable

2

INC

INC

INC

Press INC key

Press INC key

Press INC key

3

SHIFT

INC

When press SHIFT key, move the cursor to right by one point.

Press INC key, change 1 to 2

4

SET

INC

Then, press SET move the cursor to right most

You can set parameter content

5

SET

SET

Press SET key, the display can twinkle

Press SET key again, move the cursor to left-key again, move the cursor to left-most

6 SHIFT Return to common mode

6.4 Parameter setting

This chapter states how to set the parameter of flow meter by using the setting key which on the intelligent head meter’s panel. Parameter list as table 6-6�

6.4.1 Change common mode to setting mode

1 Press SET key, change “common mode” to “setting mode”. Then enter to the parameter setting state.


2. Use the sign “:” to separate the “parameter number” on the left and “parameter data content” on the right. As fig 6-3 shows.

%scf gal bt Nm kg/ h/ m3

SET SFI FE I NC

di spl ay sect i on

set t i ng sect i on

par amet er sect i on� 2 di gi t s�

dat a sect i on� 4 di gi t s�

Fig 6-4 Parameter number area and data area

6.4.2 Parameter code and setting of parameter data

Press SET key, change “common mode” to “setting mode”.

Press INC key to change parameter number(digital or letter) and press SHIFT key to move cursor.

Head meter display area

(This example means B02. If the number of parameter is B□□□B

will not be displayed.)

Press SET key, move the cursor to “parameter data area”.

Press INC key to revise parameter value and position of decimal point. Then press SHIFT to move the cursor.

After revising, press SET key, all the parameter number and data will twinkle. Confirm the content and press SET key again, the setting is over.

When finished setting, press SHIFT key, it will return to “common mode”, and then display flow or alarm.

Example of parameter setting

The flow of parameter setting is as table 6-6.


Table 6-6, Setting K-factor

Mode change and operation Display Description

SET Press [SET] to enter setting

mode↓

The item is 06 (=B06), setting K-factorSetting data and decimal point, confirm the decimal point by pressing [INC] key

SET Press [SET] again, “B”

cancelled, display “06” only↓

Press [SHIFT] to move the cursor at “6” position

↓

Data 68.6 is initial value

SET Press [SET] key to enter data

section(Change the data)

↓

Changing 68.6 to 1068.6

INC Press [INC] Moving the

cursor↓

SHIFT Press [SHIFT]

INC Repeat until1068.6 setting is performed data display circulation

SET Press [SET],

all data flashing↓

SET Press [SET] again,

saving data↓

SHIFT Press [SHIFTT] key,

Turn back to normal mode


Table 6-7 Parameter list

Item Name R/W Data range ( ) Unit Decimal point Description Initial

value

B00 SET1 R Menu B

B01 TAG NO. W 8 alphanumeric characters

Tag No.

B02 OUTPUT W 4~20mA DCPULSE

(0)(1)

Selection out mode(Meanwhile change the jumper)

4 to 20 mA

B03 SIZE W 15 mm (1/2”) (0) Selection of meter tube 25 mm

25 mm (1”) (1)

40 mm (1.5”) (2)

50 mm (2”) (3)

80 mm (3”) (4)

100 mm (4”) (5)

150 mm (6”) (6)

200 mm (8”) (7)

250 mm (10”) (8)

300 mm (12”) (9)

B06 K-FACTOR(KM) W 0.0001 ~ 32000 P/l 0 ~ 5 K-factor (KM at 15°C) 68.6

B35 FLOW UNIT Wm3 (0)

Selection of Flow unit m3

l (1)

B50 TIME UNIT W /s/m/h/d

(0)(1)(2)(3)

Selection of Time unit flowrate /m

B51 SPAN FACTOR W E0E+1E+2E+3E+4E+5E-5E-4E-3E-2E-1

(0)(1)(2)(3)(4)(5)(6)(7)(8)(9)

(10)

Selection of Span factorE0=1E+1=10E+2=100E-2=0.01

E0 (=1)

B52 FLOW SPAN W 0.00001 ~ 32000 m3/m 0~5 Flow span 10

B53 DAMPING W 2481632640

(0)(1)(2)(3)(4)(5)(6)

sec Selection of Damping time 4 second (1)

C00 SET2 Menu C


Item Name R/W Data range ( ) Unit Decimal point Description Initial

value

C01 TOTAL RATE W E0E+1E+2E+3E+4E+5E-5E-4E-3E-2E-1

(0)(1)(2)(3)(4)(5)(6)(7)(8)(9)

(10)

E0=1E+1=10E+2=100

E0

C02 PULSE RATE W E0E+1E+2E+3E+4E+5E-5E-4E-3E-2E-1

(0)(1)(2)(3)(4)(5)(6)(7)(8)(9)

(10)

Scaled pulse factor,E0=1E+1=10E+2=100

E0

D00 ADJUST R Menu D

D20 FLOW ADJUST W NOT ACTIVEACTIVE

(0)(1)

Selection of correcting instru-mental error

0

D21D22D23D24D25D26D27D28D29D30

FREQ1K1FREQ2K2FREQ3K3FREQ4K4FREQ5K5

WWWWWW

Hz%Hz%Hz%Hz%Hz%

0 ~ 50 ~ 50 ~ 50 ~ 50 ~ 50 ~ 50 ~ 50 ~ 50 ~ 50 ~ 5

First break-point frequency (f1)First test point K-factor (K1)Second break-point freq. (f2)Second test point K-factor (K2)Third break-point freq. (f3)Third test point K-factor (K3)Fourth break-point freq. (f4)Fourth test point K-factor (K4)Fifth break-point freq. (f5)Fifth c test point K-factor (K5)

1.01.01.01.01.01.01.01.01.01.0

E00 CONTROL R Menu E (Control signal)

E01 TOTAL RESET W NOT EXCUTEEXECUTE

(0)(1)

Resetting Totalized value NOT EXCUTE

E02 DISP SELECT W RATE (%)RATETOTALRATE (%), TOTALRATE, TOTALRATE, RATE (%)

(0)(1)(2)(3)(4)(5)

Selection of Display RATE (%)

H00H07H08H09H30

MAINTENANCEL.C. FLOWRATETRIM 4mATRIM 20mAREVISION

RWWWR

0 ~ B52-1 ~ 10-10 ~ 10

B52%%

0 ~ 50 ~ 50 ~ 5

Menu H (Maintenance)Low cut flowrateTrim 4mATrim 20mARevision number of software

0.061220.00.0

H08, H09: TRIM 4mA, TRIM 20mA Setting value in H08 or H09 equal display value. E.g. When setting H08, The display value is “4.02”, then setting “4.02” in H08, press [set] key 2 times. repeat above procedure until display “4.00”.


6.5 List of error code

When there is error in instrument, the displayed error is as table 6-8:

Table 6-8 Error code list

No. Errorname Display Possible

reasonCurrent output

Pulse output Output%

Project unit

output

Accumulation output Remove way

1Output

over range

No display

Output signalMore than

110%

Fixed at110% Normal Fixed

110% Normal NormalChange

parameter or flow range

2 Data overflow HHHH

Instant flow or accumulation flow overflow

Normal Normal Normal Normal Not Normal Change B51 or C01

6.6 Replacement of lithium battery (LRT-I)

The steps of changing Li-ion battery are as following:

» Unscrew the back cover.

» Put the power jumper at “OFF” position.

» Loose the two bolts of the fixed battery with screwdriver (as Fig 6-1), draw the battery pin and unload the Battery.

» Rip away the new battery lead wire for about 10 millimeter with wire stripper; insert the battery in the connection terminal.

» (Pay attention to the polarity) and tighten the screw.

» Put the power jumper at “ON” position (at “OFF” when you don’t use it for saving power).

» Cover the back cover.

7. Maintenance of Transducer and Revising of K-Factor

a) You should install the transducer according to the flow range, nominal pressure and flow direction mark on the checkup certificate.

b) The transducer should work under following conditions:

Liquid temperature: -20 to +120°C

Ambient temperature: -20 to +55°C

Ambient humidity is not more than 80% (Except high temperature).

c) When the transducer leaves the factory, it is calibrated with normal temperature water. If the measuring liquid is not the same with normal temperature water you should revise the parameter or recalibrate it with actual measuring liquid. But for liquid whose viscosity is lower than 5×10-6m2/s (5MPa.s), you should not recalibrate. The example of instrument parameter revising is as following:


Example: There is a LWGY-25A, K-factor is 327.5834P/L (calibrated with water), use it to measure 30cP hydraulic pressure oil, find there have 100 liter (QS) oil in the container, while flow displayer displays 93.5 liter (Qa), at this time you should adjust the K-factor as follow:

LPQQQKKs

saN /2905.306

100

1005.9315834.3271 =÷

�

��

� �+�÷÷

�

��

�+� £½

£-£½

Reset the new K-factor into the flow displayer, repeat above procedure, observe the displayed value, if there still have errors, you may revise for several times until you are satisfied.

d) The usage period of transducer is usually from half a year to one year according to the working

condition. And you should wash it regularly. If find the axle or axletree is wearing seriously, change it and recalibrate it.

Note: Take care of the product calibrate certificate properly to avoid losing the constant of the instrument or other data.

8. Error and Troubleshooting

The troubles of transducer can be concluded as three points:a) There is no output signal in the transducer or monitor;b) There is still output signal when the flow is zero;c) Indicative flow is not in agreement with actual flow.

The reasons of these troubles are as table 8-1:Table 8-1

TroublePhenomena

TroubleReason

RemoveMethod

No output

Wiring is not correct Check wiring

Sludge adhering to the rotor Clean the pipeline or rotor

Turnoff or short Change the amplifier

Preamplifier failed Change the amplifier

No power or voltage error Check the power supply

Error in itself Check the instrument

Has output when no flow

Outside magnetic field Check the shield or exclude obstruction

Pipeline vibration Eliminated the vibration

Large flow errors

Outside magnetic field and pipelin vibration Check the shield and eliminated the vibration

Preamplifier failed Check the amplifier

Vapor in the pipeline Install air eliminator

Back pressure low Increase back pressure

Bearing weared out Change the bearing

Sludge adhering to the rotor Clean the pipeline or rotor

Pipeline error Select proper pipe

Error in itself Check the instrument

Accurate Flowmeters & Instrumentation Pvt. Ltd.(Formerly RR Flowmeters Pvt. Ltd.)

Head Office : G1, Sai Thirumala Heights, Plot No. 54, 55 & 91, Bhandari Layout, Nizampet, Hyderabad - 500090, INDIA. Tel : +91 - 40 - 2980 3333, Telefax : +91 - 40 - 2980 2323, Mobile : +91- 9490 262626

Factory : Plot No. 71 & 82, Sy. No. 139, Aminpur Village, Patancheru Mandal, District Medak - 502032

Web : www.accurateflowmeters.com E-mail : [email protected]

ISO 9001-2008 Certified Company

Documents

LWGY Series Turbine Flowmeter Instruction Manualaccurateflowmeters.com/a/pdf/turbine fm (4).pdf · LWGY Series Turbine Flowmeter Instruction Manual ... Instruction Manual of Model