Teledyne GFC-7000T - Trace CO2 Analyzer - manual - Manual (Page 182)

Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer
Teledyne Analytical Instruments 164
STEP THREE: Perform the Zero/Span Calibration Procedure:
M-P CAL STABIL=XXX.X PPM CO2 =XXX.X
< TST TST > ENTR CONC EXIT
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
EXIT returns to the main
SAMPLE display
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 > SPAN CONC EXIT
M-P CAL RANGE = 500.000 PPM CO2 =XXX.X
< TST TST > ENTR SPAN CONC EXIT
M-P CAL RANGE = 500.000 PPM CO2 =XXX.X
< TST TST > ENTR CONC EXIT
Wait until STABIL
falls below 1.0 ppm.
This may take several
minutes.
The SPAN button
appears.
If either the ZERO or
SPAN buttons fail to
appear see Section 11
for troubleshooting tips.
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 CO
2
measurement
Press ENTR to changes the
OFFSET & SLOPE values for the
CO
2
measurements.
Press EXIT to leave the calibration
unchanged and return to the
previous menu.
ACTION:
Allow span gas to enter the sample port at the
rear of the instrument.
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
CO
2
measurements.
Press EXIT to leave the calibration
unchanged and return to the
previous menu.
If the ZERO or SPAN buttons are not displayed, this means that the measurement made during that part
of the procedure is too far out of the allowable range to do allow a reliable calibration. The reason for this
must be determined before the analyzer can be calibrated. See Section 11 for troubleshooting tips.