Teledyne GFC 7001EM operation manual Calibration of the Analog Outputs

Advanced Features Model GFC7001E Carbon Dioxide Analyzer

7.4.3.CALIBRATION OF THE ANALOG OUTPUTS

Analog output calibration should to be carried out on first startup of the analyzer (performed in the factory as part of the configuration process) or whenever recalibration is required. The analog outputs can be calibrated automatically or adjusted manually.

During automatic calibration, the analyzer tells the output circuitry to generate a zero mV signal and high-scale point signal (usually about 90% of chosen analog signal scale) then measures actual signal of the output. Any error at zero or high-scale is corrected with a slope and offset.

Automatic calibration can be performed via the CAL button located inside The AOUTS CALIBRATION submenu. By default, the analyzer is configured so that calibration of analog outputs can be initiated as a group with the AOUT CALIBRATION command. The outputs can also be calibrated individually, but this requires the AUTOCAL feature be disabled.

7.4.3.1.Enabling or Disabling the AutoCal for an Individual Analog Output

To enable or disable the AutoCal feature for an individual analog output, elect the ANALOG I/O CONFIGURATION submenu (see Figure 7-4) then press:

Teledyne Analytical Instruments 133