Freeze Protection Ambient Sensing Monitor Series

Freeze Protection Ambient Sensing Monitor Series
  • Standard NEMA 4 Enclosures
  • NEMA 4X Stainless Steel Enclosure Option
  • Hand/Off/Auto Selector Switch
  • 12, 18, 20, 30, and 42 Position Panelboards
  • 15, 25, 30, and 40 Amp Singlepole and Double-pole 30 mA Ground Fault Thermal-Magnetic Circuit Breakers
  • 100 and 225 Amp Main Bus
  • Single-phase 120/240 VAC
  • Three-phase 120/208 VAC 4-Wire
  • Three-phase 277 VAC 4-Wire
  • 100 and 250 Amp Main Disconnect Switch Option
  • Ambient and Line Sensing Control
  • WeatherTrace Sentinel Monitoring with Common Alarm and Re-Ring Feature
  • Z-Purge Pressurization System for Class 1, Division 2 Option
  • Enclosure Heater Option for Subzero Ambients
  • UL and cUL Third Party Approvals

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.

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