Alarm Trips: The Ups and Downs

Oct. 22, 2010
This white paper features extensive information on various types of alarm trips, their effective applications and safety factors, and addresses other considerations that need to be made when implementing an alarm trip strategy.

A limit alarm trip monitors a process signal (such as one representing temperature, pressure, level or flow) and compares it against a preset limit. If the process signal moves to an undesirable high or low condition, the alarm activates a relay output to warn of trouble, provide on/off control or institute an emergency shutdown.

While limit alarm trips are best known as a sure way to activate a warning light, siren or bell when a process problem occurs, they are also called upon to do much more. In fact, today’s highly flexible and versatile alarm trips can be found working in a wide range of applications, under an impressive list of pseudonyms.