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Thank you for your responses. Article from IAEI is exactly what I was looking for. Once again, Thank you.

I do not have a lot of experience with I.S. Barriers. My question is fairly simple. Should you test I.S. Barrier? How frequently should you test them? What is the testing procedure for one? Thank you for all your responses. Sincerely, Dan

Update. The prints I had for this Panel date back to 1954. However, somewhere along the lines someone changed 480 VAC lights to 125 VAC. Thank you for tips

I have old (40y) TG control panel with about 30 pilot lights. About 10 of those lights are 480VAC. What i want to do is to bring all of those lights to the PLC HMI. However 480 VAC presents the problem. Cannot modify the source of the 480VAC pilot lights. Short of installing step down...

I believe that might be a legal issue in today’s world. All my colleagues are Instrument or Electrical Engineers. I have BS in Electrical Engineering Technology and MS in Technology and I am Instrument Specialist. On my business card it says Instrument Specialist. Do we have a school to become...

I have a sump in C1D1 area. Need to install a accelerometer onto a pump to monitor vibrations. The pump shaft is 8ft long. Motor is in C1D2 area. This is where I would read vibe reading. Accelermeter is I.S. rated. I have matching I.S. barrier. My question is wiring between accelerometer and...