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Nelson™ Heat Trace CM3 Circuit Management System
Brand: NelsonNelson™ Heat Trace CM3 circuit management system provides a compact, tightly integrated, factory assembled/tested solution for high density plant locations.
The unit is based on a standard PLC platform, specifically integrated for use with electric heat trace systems.
The CM3 provides temperature monitoring and control of the trace heating system. It automatically checks the health of the trace heating system.
Negative trends are noted on a maintenance pending list, while more severe problems are removed from service and alarmed.
Features- • Temperature Control
- An RTD based temperature control function optimizes energy consumption, while maintaining tight temperature control on your process piping. High and low temperature alarms will alert you to any upset conditions that could cause problems with your processes.
- Heat Trace Ground Fault Protection
- The system provides continuous monitoring of ground fault conditions with each circuit, eliminating the need for expensive ground fault protection branch circuit breakers.
- Separate values can be inserted for alarm and trip functions, alerting you to problems before the problem becomes severe enough to require the heat trace be taken out of service.
- Adjustable trip values allow you to compensate for normal capacitive ground fault leakage that occurs in cables.
- Predictive Maintenance System
- Ground fault and load current values are compared to earlier values.
- Adverse trends in a trace heater will get that circuit put on a maintenance log alert system.
- This log allows the limited maintenance resources to be optimally deployed.
- Heat Trace Power Output Monitoring
- Adjustable high and low load current alarms for each heat trace circuit provide a constant monitor of the power output of each heat tracer.
- A low current alarm can identify the loss of a heater segment before the pipe can plug up and stop the process.
- A high current alarm can identify a developing short circuit in the tracer allowing the circuit to be taken off line with a minimum of damage to the rest of the heat tracer.
- Automatic Testing
- The system will continuously test the system, even when it is not in use.
- This allows any problems to be identified as they occur, rather than allowing problems to cascade over a long period.
- The unit turns each circuit on at selected intervals and checks for ground fault leakage and load currents.
- Any problems will be alarmed.