Teledyne GFC 7001EM operation manual Electronic Operation of the CO2 Sensor

Optional Hardware and Software Model GFC7001E Carbon Dioxide Analyzer

Figure 5-17: GFC 7001E/EM – Internal Pneumatics with CO2 Sensor Option 66

5.9.2.4.Electronic Operation of the CO2 Sensor

The CO2 PCA which is mounted to the rear side of the Relay Board Mounting Bracket controls the CO2 Sensor. It converts the sensor’s digital output to an analog voltage that is measured with the motherboard and draws 12 VDC from the analyzer via the relay card from which converts to fit the power needs of the probe and its own onboard logic. It outputs a 0-5 VDC analog signal to the analyzer’s CPU via the motherboard that corresponds to the concentration of CO2 measured by the probe.

Figure 5-18: CO2 Sensor Option PCA Layout and Electronic Connections

Teledyne Analytical Instruments 79