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DIFFERENTIAL PRESSURE TRANSMITTER MODEL

FKC WITH AIR CAPILLARY

FOR CLEAR WATER SURGE VESSEL

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1/ Method of operation The differential pressure transmitter is used to obtain a level of water contained in a pressure vessel by the difference of pressure measured between the bottom of the surge vessel (pressure of the water by the outlet) and the top of the vessel (pressure on the air of the surge vessel) This level is indicated on the lower sensor LCD display with 5 digits. The display can be parameterized in millimetres of water column, in centimetres as a percentage of the total volume. The choice of the different units of measurement can be parameterized on request. This value can also be transmitted using a 4/20mA signal with Hart protocol. 2/ Components detail The material is delivered with one differential pressure sensor, one isolation valve with flange connection DN50 PN40 in stainless steel 316L, one capillary protected by a reinforced stainless steel sheath for air connection and one 15/21 ball valve. Lower sensor detail : Differential pressure transmitter FKC Outlet: 4-20 mA signals with HART protocol Building material: Flange stainless steel, O-ring: Glass-filled PTFE Sensor fluid fill silicone Housing material/conduit entry size: Aluminium covered by polyurethane / 1/2-14 NPT Display: LCD indicator with 5 digits Calibration certificate supply.

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ETENDUES DE MESURE

CONNECTION DIAGRAM

:

Date

CREATION

D

E

F

C

B

A

C

D

A

Format: A3

Page:

NUMERO PIECE/PART NUMBEREch/Scale: 1:3

E M SATW

ACR

AOF

SUB

ASO

B

NUMERO DESSIN/DRAWING NUMBER

Electronic dif erential pressure transmitter

Detail of connection of capillary and lower sensor: The delivery capillary is connected at the bottom of the lower sensor on the water side and at the top of the surge bladder vessel on the air side.

.

3/ Electrical connection

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Output Two-wire 4-20 mA, user-selectable for linear or square root output. Digital process variable superimposed on 4-20 mA signal, available to any host that conforms to the HART protocol.

Power Supply External power supply required. Standard transmitter (4-20 mA) operates on 11 à 45 Vdc with no load. Use the following steps to wire the transmitter: 1. Remove the housing cover (the one that doesn’t display). 2. Connect the positive lead to the “SUPPLY +” terminal and the negative lead to the “SUPPLY –“ terminal. 3. Ensure proper grounding. It is important that the instrument cable shield:

• be trimmed close and insulated from touching the transmitter housing • be connected to the next shield if cable is routed through a junction box • be connected to a good earth ground at the power supply end

Note : Do not connect the powered signal wiring to the test terminals. Power could damage the test diode in the test connection. Shielded twisted pair cable should be used for best results. Use 24 AWG or larger wire and do not exceed 5,000 feet (1500 meters). 4. Plug and seal unused conduit connections. 5. If applicable, install wiring with a drip loop. Arrange the drip loop so the bottom is lower than the conduit connections and the transmitter housing. 6. Replace the housing cover The following schedule shows wiring connections necessary to power a FKC and enable communications with a hand-held Field Communicator. For low-power transmitters, refer to the reference manual. Electric connection diagram for transmitter (4–20 mA) Signal wiring grounding

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Do not run signal wiring in conduit or open trays with power wiring, or near heavy electrical equipment. Grounding terminations are provided on the outside of the electronics housing and inside the Terminal Compartment. These grounds are used when transient protect terminal blocks are installed or to full fill local regulations. See Step below for more information on how the cable shield should be grounded. 1. Remove the Field Terminals housing cover (the one that doesn’t have display). 2. Connect the wiring pair and ground as indicated in Figure 7. The cable shield should:

• Be trimmed close and insulated from touching the transmitter housing. • b. Continuously connect to the termination point. • c. Be connected to a good earth ground at the power supply end.

3. Replace the housing cover. It is recommended that the cover be tightened until there is no gap between the cover and the housing. 4. Plug and seal unused conduit connections.. Power Supply for 4-20 mA HART

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Transmitter operates on 11 à 45 V dc. The dc power supply should provide power with less than 2% ripple.

The total resistance load is the sum of the resistance of the signal leads and the load resistance of the controller, indicator, and related pieces. Note that the resistance of intrinsic safety barriers, if used, must be included. Power Supply for 1-5 V dc HART Low Power transmitters operate on 6–12 V dc. The dc power supply should provide power with less than two percent ripple. The V out load should be 100 kW or greater. 4/ Possible option It is possible as an option and on specific request to have :

• the sensor in stainless steel for marine and aggressive ambiance • specific sensor with ATEX certificate

For more detail, do not hesitate to consult the Quick Installation Guide (supply with the material). CHARLATTE RESERVOIRS 17, Rue Paul Bert 89400 MIGENNES Tél. : 03 86 92 30 12 Fax 03 86 92 30 01 Site web :www.charlatte.fr