Basic Limit Alarm Trip Functions
Anything from simple annunciation to shut down of an entire process can be handled
by a limit alarm trip. An alarm trip accepts an input signal from a monitoring or control
instrument, such as a signal transmitter or sensor. When the monitored variable falls
outside of a user-set “Trip” (also called “Set”) Point, the alarm trip activates one or
more of its relay outputs. The relay(s) are typically used to control a warning light,
annunciator, bell, pump, motor or a shutdown system