Macurco gas Calibration UAE
CD-xxH/MC Unit Calibration and Testing
• The CD-xxH/MC units can be calibrated and tested for proper operation.
• During normal operation, the green status indicator LED light remains steady, the fan & alarm relay is in standby mode, and the 4-20 mA output corresponds to the gas reading of the detector.
• If an improper voltage or inoperable component is detected, it defaults into error mode, activating the alarm relay, increasing the current loop, and flashing the green status indicator LED light.
• To test the unit, remove the single screw in the front cover and observe the LED light.
• Press the ENTER/TEST switch on the printed circuit board to proceed through a cycle test.
• After testing, reassemble the unit or units. A manual operation test allows the user to manually initiate individual tests for each relay, analog output, and sensor response to gas.