Differential Pressure (ΔP) Transducer Installation
When ordered as part of a meter system with a Register, the Liquid Control ΔP transducer is wired to the Register at the factory. The ΔP transducer can also be ordered separately and installed onto a meter system already in service. Refer to the ΔP transducer manual for complete installation instructions. Instructions for wiring the ΔP transducer to the Register can be found below.
Typically, a ΔP transducer operates together with a shutdown device, such as a valve or a dead-man.
Follow these steps to wire ΔP Transducer to the Register:
1.Route the ΔP transducer cable through a cable gland in a port on the back of the Register. Secure the cable gland. LC recommends running the cable through weatherproof conduit. Make sure to use thread sealant on NPT threads.
2.Connect the four ΔP transducer wires to terminals to the recommended Register terminals as follows:
•+VP / Black to terminal 12
•GND / White (Ground) to 36
•B / Yellow to terminal 38
•A / Blue to terminal 37
3.Route a two-wire cable from the shutdown control device through a cable gland in a port on the back of the Register. Secure the cable gland. Make sure to use thread sealant on NPT threads. Liquid Controls recommends running the cable through weatherproof conduit.
4.Connect the two wires from the shutdown control device to terminals 23 (S1) and 24 (+VP).
Current Draw on Shutdown Device |
The shutdown device should draw no more than 1 Amp. |