CM-1 Heating Cable Monitoring System

Supply Voltage, Current and Continuity Monitoring for Heating Cables and Panels. Also Provides Alarm Indication when Ground Fault Breakers are Tripped. Ordinary and Hazardous Locations.

The CM-1 continually monitors the supply voltage and current of both series and parallel styles of electric heat tracing cables and panels. When used in conjunction with ground fault branch breakers, the CM-1 also serves as an automatic alarm system when the heating system is de-energized due to a tripped breaker. Continuity monitoring for parallel-resistance heating cables can be enabled by adding a passive bus monitor device at the end of each heater circuit.

The microprocessor-based scanner systematically compares programmed values with actual data from sensor cards capable of monitoring up to 4 circuits each. The status of each circuit is displayed using high-visibility LEDs. Multiple CM-1 systems throughout a facility can also be connected to a central PC to provide centralized alarm status and acknowledgement.

Configurations are available to monitor up to 48 different heating circuits with a voltage range from 85 to 300 Vac and current from 0.05 to 30 Amps. The CM-1 itself requires 120 Vac power. The system operates in ambient temperatures ranging from -40°C/-40°F to 55°C/130°F. A NEMA 4 or 4X enclosure can be used for either wall or rack mounting, and all standard CM-1 models are FM Approved and CSA Certified for use in ordinary and Division 2 hazardous locations.

Specification Sheet Manual
Nelson Heat Trace
CM-1 Heating Cable Monitoring System