FPASM – Freeze Protection Ambient Sensing Monitor Series
The FPASM WeatherTrace with the Sentinel
System, continually monitors the supply
voltage to each individual heat trace circuit.
Loss of voltage or a ground fault condition will
trigger an automatic alarm condition, alerting
plant personnel of critical process problems
and reducing downtime. An annunciator panel
then identifies the faulted zone and a Common
Alarm is activated with the re-ring feature.*
The FPASM series controls multiple heat
trace circuits via an ambient sensing external
thermostat, external electronic controller or
via an ambient sensing, door mounted 1601E
controller. Chromalox recommended controllers
include: RTAS, RTAS-EP, B100, E100 or
the 1601E microprocessor controller.
The FPASM may be operated in two modes;
automatically with the external controller or in
manual override via the Hand/Off/Auto selector
switch.
* The re-ring feature allows the WeatherTrace panel to
communicate additional alarm conditions in the system
by momentarily clearing and resetting the alarm output
contact. The customer's monitoring device such as a
PLC or DCS would interpret this condition to alert the
operators of an additional alarm occurring.