Teledyne GFC 7001EM operation manual Test Functions Defined

Basic Operation				Model GFC7001E Carbon Dioxide Analyzer
			Table 6-2:	Test Functions Defined
PARAMETER		DISPLAY TITLE	UNITS	MEANING
			PPB3, PPM	Standard deviation of CO concentration readings. Data points are
Stability		STABIL		recorded every ten seconds using the last 25 data points. This
			UGM3, MGM	function can be reset to show O2 or CO2 stability in instruments with
				those sensor options installed.
		RANGE	PPB, PPM,	The full scale limit at which the reporting range of the analyzer is
Range		1		currently set. THIS IS NOT the Physical Range of the instrument.
		RANGE11	UGM, MGM
		RANGE2		See Section 6.6.1 for more information.
O2 Range 1		O2 RANGE	%	The range setting for the optional O2 Sensor.
CO2 Range2		CO2 RANGE	%	The range setting for the optional CO2 Sensor.
CO Measure		CO MEAS	MV	The demodulated, peak IR detector output during the measure
				portion of the GFC Wheel cycle.
CO Reference		CO REF	MV	The demodulated, peak IR detector output during the reference
				portion of the GFC Wheel cycle.
Measurement /		MR Ratio		The result of CO MEAS divided by CO REF. This ratio is the
			-	primary value used to compute CO concentration. The value
Reference Ratio
				displayed is not linearized.
Sample Pressure		PRES	In-Hg-A	The absolute pressure of the Sample gas as measured by a
				pressure sensor located inside the sample chamber.
Sample Flow		SAMPLE FL	cm3/min	Sample mass flow rate as measured by the flow rate sensor in the
				sample gas stream.
Sample		SAMP TEMP	C	The temperature of the gas inside the sample chamber.
Temperature
Bench		BENCH TEMP	C	Optical bench temperature.
Temperature
Wheel		WHEEL TEMP	C	GFC Wheel temperature.
Temperature
Box Temperature		BOX TEMP	C	The temperature inside the analyzer chassis.
O2 Cell	3	O2 CELL TEMP3	C	The current temperature of the O2 sensor measurement cell.
Temperature
Photo-detector		PHT DRIVE	mV	The drive voltage being supplied to the thermoelectric coolers of the
Temp. Control
				IR photo-detector by the sync/demod Board.
Voltage
Slope		SLOPE	-	The sensitivity of the instrument as calculated during the last
				calibration activity.
Offset		OFFSET	-	The overall offset of the instrument as calculated during the last
				calibration activity.
O2 Sensor		O2 SLOPE	-	O2 slope, computed during zero/span calibration.
Slope 1
O2 Sensor Offset 1		O2 OFFSET	-	O2 offset, computed during zero/span calibration.
CO2 Sensor		CO2 SLOPE	-	CO2 slope, computed during zero/span calibration.
Slope2
CO2 Sensor		CO2 OFFSET	-	CO2 offset, computed during zero/span calibration.
Offset 2
Current Time		TIME	-	The current time. This is used to create a time stamp on iDAS
				readings, and by the AUTOCAL feature to trigger calibration events.

1Only appears when the optional O2 sensor is installed.

2Only appears when the optional CO2 sensor is installed.

3Only available on the GFC 7001E.

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