Cla-Val 133VF - Manual (Page 3)

8” valve flow rate
RTU
Not Supplied by
CLA-VAL
Power
Supply
133VF System Using Inlet & Outlet Pressure Sensing
Wiring Diagram
Typical 133VF System installation where two pressure transmitters are used upstream and downstream of the
valve. The 131VF module will calculate pressure differential from these two sensors. When inlet and outlet
pressure values are to be sent to RTU, then loop isolators should be installed on the 4 - 20 mA signals going to
SCADA and the 131VF. Provide for adequate protection from lightning strikes.
Use loop powered isolators when sending
4-20 mA pressure signals to SCADA.
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other wires not used