[Dsg-rich] RICH air cooling buffer tank PT

[Tyler Lemon]

Hello,

This afternoon, Amanda, Pablo, and I checked the remote monitoring pressure transducer (PT) on the RICH air cooling system's buffer tank.

We verified that the PT is getting the correct 24 V from its power supply at both ends of its signal cable (at both the power supply chassis side and at the PT side).

With the cooling system depressurized, the PT should be reading 0 V (0 psi). We observed that the PT measuring ~ -0.7 V (~ -27 psi). This seems to be a good indicator the PT has gone bad and should be replaced if the buffer tank pressure is to continue to be used as an interlock signal.

- Tyler
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