Teledyne gfc 7000ta operation manual Perform the Zero/Span Calibration Procedure, Stabil=Xxx.X Ppm

Getting Started Model GFC7000TA Carbon Dioxide Analyzer

3. Perform the Zero/Span Calibration Procedure

SAMPLE*	RANGE = 500.000 PPM	CO2 =XXX.X
< TST TST > CAL		SETUP
SAMPLE	STABIL=XXX.X PPM	CO2 =XXX.X
< TST TST > CAL		SETUP

Set the Display to show the

STABIL test function.

This function calculates the

stability of the COx

measurement

ACTION:

Allow zero gas to enter the sample port at the

rear of the instrument.

M-P CAL	STABIL=XXX.X PPM	CO2 =XXX.X
< TST TST > CAL		SETUP
M-P CAL	STABIL=XXX.X PPM	CO2 =XXX.X
< TST TST > ZERO CONC		EXIT

Wait until STABIL falls below 1.0 ppm.

This may take several

minutes.

M-P CAL	STABIL=XXX.X PPM	CO2 =XXX.X	Press ENTR to changes the
			OFFSET & SLOPE values for the
< TST TST > ENTR CONC		EXIT	CO2 measurements.
			Press EXIT to leave the calibration
			unchanged and return to the
			previous menu.

The SPAN button now

appears during the transition from zero to span..

If either the ZERO or SPAN buttons fail to appear see Section 11 for troubleshooting tips.

ACTION:

Allow span gas to enter the sample port at the

rear of the instrument.

M-P CAL	STABIL=XXX.X PPM		CO2 =XXX.X
< TST TST >	SPAN	CONC	EXIT
M-P CAL	= 500.000 PPM		CO2 =XXX.X
< TST TST > ENTR SPAN		CONC	EXIT

The value of

STABIL may jump

significantly.

Wait until it falls back

below 1.0 ppm

This may take several

minutes.

Press ENTR to change the

OFFSET & SLOPE values for the

CO2 measurements.

Press EXIT to leave the calibration

unchanged and return to the

previous menu.

M-P CAL	RANGE = 500.000 PPM	CO2 =XXX.X
			EXIT returns to the main
< TST TST > ENTR CONC		EXIT	SAMPLE display

Teledyne Analytical Instruments 39