
Single Gas Sensor Module (SGSM)
Operations Manual
Super Systems Inc.
Page 22 of 38
Page 22 of 51
Sensor Information
The Sensor Information page displays information that is useful for SSi technicians and
engineers when troubleshooting.
AVdd: This value is the supply voltage for the analog to digital converter that measures
the pellistor voltage. This value is typically about 5V.
Excitation Vdd: This value is the voltage seen across the pellistor bridge. This value
should be approximately 0.9V.
PellistorVdd: This value is the voltage present across the sensing pellistor. This voltage,
in air, should be approximately half the excitation voltage.
Gas Temperature: The temperature of the measured gas.
Amb. Temperature: The ambient temperature where the sensor is located. NOTE: The
following options are intended primarily for SSi personnel to assist with troubleshooting
procedures.
Zero Vdc: (voltage direct current) A record of the zero vdc reading from the most recent
calibration.
Zero Gas Temperature: A record of the zero gas temperature reading from the most
recent calibration.
Span Vdc: (voltage direct current) A record of the span vdc reading from the most recent
calibration.
Span Gas Temperature: A record of the span gas temperature reading from the most
recent calibration.
Span Target %: A record of the span target % from the most recent calibration.
Note that these values are for diagnostic use only. Call SSi at (513) 772-0060 with questions.
Figure 9- Sensor Information Page