Super Systems A20831-CH4, Operation Manual, Page: 19 / 30

Single Gas Sensor Module (SGSM)
Operations Manual
Super Systems Inc. Page 19 of 30 Page 19 of 51
Sensor Information
The Sensor Information page displays information that is useful for SSi technicians and
engineers when troubleshooting.

Ref Vdc: Voltage present value (PV) of the NDIR reference channel.

Gas Vdc: Voltage PV of the NDIR sensing channel.

Gas Temperature: There is a thermistor located in the gas stream of the unit to measure
the temperature of the sample gas. This measurement is used for compensation of the
IR reading.

Amb. Temperature: There is a thermistor located inside of the SGSM enclosure
measuring the temperature inside the enclosure.

Gas Pressure: Gas pressure measured inside of the NDIR chamber.

Zero Ref. Vdc: Voltage PV of the NDIR reference channel during a zero calibration.

Zero Gas Vdc: Voltage PV of the NDIR sensing channel during a zero calibration.

Zero Gas Temperature: This is the temperature of the zero gas at the time of the zero
gas calibration.

Span Ref. Vdc: Voltage PV of the NDIR reference channel during a span calibration.

Span Gas Vdc: Voltage PV of the NDIR sensing channel during a span calibration.

Span Gas Temperature: This is the temperature of the span gas at the time of the span
gas calibration.

Span Target %: This is the user entered value of the span gas percentage during the
span gas calibration.

Span Multiplier: This is a diagnostic tool for internal use only.
Note that this is for diagnostic use only. Call SSi at (513) 772-0060 with questions.
Figure 5 - Sensor Information Page