I have a natural gas compressor with a control panel (Remvue) and and ignition panel (Murphy) a few feet away. The rem panel has an analog out ran through a AI barrier, into a 1 pair beldon cable, into tray and up to a pressure sensor. Through the transducer, and back to the panel for control. The shielded beldon is ran in the same 4" inst tray as the ignition wires coming from the Murphy. These cables have metal mesh along the outside and hold 250volts that pulse to each spark plug. With that being said, I want to know if a pulsed voltage can cause a different reading (being a resistance) on the beldon? The Analog wires (4-20) use resistance to measure the pressure from the transducer. I can simulate 159 kPa with a 1.3 kohm resister on the rem. The shutdowns are at 15 kPa and for some reason we have a spike every so often up to 200 kPa. I guess I'm wondering if a spiking 250 voltage can cause a different resistance in my 1 pair beldon, thinking that it's actually seeing a higher kPa than the transmitter is sending. We shut the transmitter in and still got a high reading every so often. I hope this is enough info, but ask if you need more about the situation.