Question - What is the response of this pneumatic relay to increasing pressure on each of its input ports?
Identify the problem(s) in this PLC program, and modify it so that it will work as it should.
We have a problem in one of the PLC Permissive Inputs that there is a programming mistake, do the troubleshooting.
PLC program to control a water pump driven by an electric motor. It will be manually started and stopped by…
Examine the overhead product pressure control loop (#33) in this distillation system (in the upper-right corner of the P&ID). Suppose…
Suppose operators submitted a “trouble-call” to your instrument shop, claiming sump V-15 had an excessive liquid level inside of it…
A pressure transmitter with a remote seal measures the pressure of a gas inside a process vessel. A pressure gauge…
Explain why no one in their right mind would ever, ever, install a three-valve manifold on a DP transmitter with…
Why is temperature an important factor in pressure transmitters equipped with remote seals (sometimes called “chemical” seals)? Specifically, what temperature…
Some pressure instruments come equipped with chemical seals consisting of diaphragm units connected to the instrument with small-bore “capillary” tubing…
