Critical Environment Technologies CGAS-A Series, Installation & Operation Manual, Page: 4 / 56

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cGas Detector Analog Transmitter - Operation Manual Rev. B | 2020.07
9.1.2 Regulators & Flow ........................................................................... 41
9.1.3 Adapters ........................................................................................... 41
9.1.4 Calibration Frequency .................................................................... 41
9.1.5 Gas Testing Frequency (Bump Testing) ..................................... 42
9.2 Calibrating the Internal Sensor ............................................................ 42
9.2.1 Set Calibration Gas Value .............................................................. 42
9.2.2 Zero (Null) Calibration .................................................................... 43
9.2.3 Span Calibration .............................................................................. 44
9.3 Troubleshooting Zero and Span Calibration ....................................... 45
9.3.1 Calibration Adapter Plug Doesn’t Fit ........................................... 46
9.3.2 Zero Fault .......................................................................................... 46
9.3.3 Span Fault ......................................................................................... 46
9.3.4 Zero Override ................................................................................... 47
9.3.5 Span Override .................................................................................. 47
9.4 Calibrating the Analog Output (requires a 4-20 mA meter) ............... 47
9.4.1 Set Analog Output Zero / Set Analog Output Range ................ 48
10 ACCESSORIES ...........................................................................................49
10.1 Splash Guard (Option -S) ................................................................... 49
10.2 Calibration Adapter Clip ”Cal Clip” .................................................... 49
10.3 Metal Protective Guard ...................................................................... 50
10.4 Calibration Kit ..................................................................................... 50
11 MAINTENANCE .........................................................................................51
12 TROUBLE SHOOTING .................................................................................52