Diagnosing Wiring Issues in Control and Safety Applications

Diagnosing Wiring Issues in Control and Safety Applications

by | Feb 28, 2018 | Measurement Instrumentation, Pressure |

Jim Cahill

Chief Blogger, Editor

Control systems rely on accurate measurements coming in from the instrumentation in the process that measures pressures, temperatures, levels, flows and more. For wired instrumentation, it’s not only the accuracy of the measurement device itself, but the impact of the wiring path between it and the terminations into the control system that determines the signal’s accuracy. This path can include terminations at the instrument, at a nearby junction box, in the wiring between the junction box and control system wire marshalling panel, and into the terminal blocks for the control system.

This 4:08 YouTube video, Rosemount 3051S Pressure Transmitters – Power Advisory Diagnostic shows the capability of the Power Advisory Diagnostic on the Rosemount 3051S pressure transmitter. The diagnostic continuously monitors the entire electrical loop to detect changes that compromise the integrity of the 4-20 mA signal.

This diagnostic coverage helps detect conditions such as corroded terminals and unstable power supplies. These conditions can compromise the integrity of the output signal and jeopardize operations. For safety instrumented system applications, these Power Advisory Diagnostics can reduce the risk of undetected failures.

https://www.youtube.com/watch?v=MTfjL0pZxms

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