FPLSM – Freeze Protection Line Sensing Monitor Series
The FPLSM series controls heat trace lines
with individual Chromalox RTBC, RTBC-EP,
E100 or E121 pipe line sensing controls. Each
circuit should be controlled by and individual
sensor/controller. Depending on the application,
controllers can switch more that one
circuit.
The FPLSM is identical to the FPLS Plug. It
features the WeatherTrace Sentinel which
continually monitors the supply voltage to
each individual heat trace circuit without the
need for additional staff. Loss of voltage or a
ground fault condition triggers 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 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.