I am looking for a device which can provide end of line monitoring (open, short, or grounding of an output circuit), which can monitor a relay or solenoid for 120 VAC energize-to-trip circuits and provide an alarm if it detects a fault condition to help insure the loop integrity of the relay or solenoid circuit.

William (Bill) L. Mostia

 

Bill,

Are these for the Amoco-BP refinery in Whiting, IN?

Phil Corso, PE

 

No, they are for another company, however, there is a current need for such a device(s) for monitoring energize-to-trip systems utilized in some safety instrumented systems. It appears that there are some available for 24 VDC systems but I have been unable to find one for 120 VAC.

Refineries commonly have these in existing systems that may be converted to SIS or in a few cases new systems (de-energize-to-trip is typically industry standard but these systems still exists). Several former Amoco sites, now BP, I believe have some your former company's equipment. Did you sell or license your technology to anyone?

Bill Mostia