Use
our Deviation Alarm model AYDV. Convert the temperature signals in 2 points
into standard DC signals, and connect them with the Deviation Alarm. It
accepts one of the signals as reference input and another as measured input,
and outputs an alarm when the measured input is smaller than the reference
input (negative deviation) or larger (positive deviation) and each deviation
exceeds respective setpoint value. If you connect 2 outputs with an OR circuit,
the same alarm output for both negative and positive deviations can be provided
(Refer to the Figure). |