Union Instruments CWD3000 EXP - Error and Status Messages

Troubleshooting
108
12.5.2 Error/status messages
Int. pressure
• Alarm in the event of inadequate combustion gas or calibration gas.
• Adjustable threshold; default: 14 mbar
Overtemp
• The flame is too hot. Wobbe signal > 76 mV
• Temperature rise in the inner tube of the thermoelectric battery > 50°C
Fault
• Gas pressure is too low.
• Fault in the thermoelectric battery.
• Defective PT 100 temperature sensor.
Service
• Air inlet temperature > 52°C
Operation
• Flame is burning, and calorimeter is running on combustion or calibration gas.
Operation delay
• Flame is burning, calorimeter is running on combustion or calibration gas.
• Delay time has elapsed, after which the analog signals are enabled.
Process
• Flame is burning, and solenoid valve for calibration gas is open.
• Calorimeter is running on combustion gas.