Teledyne GFC-7000E - Trace CO2 Analyzer - Manual (Page 143)

Model GFC7000E Instruction Manual Calibration Procedures
04584 Rev A1 132
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 ppb.
This may take several
minutes.
The SPAN key now
appears during the
transition from zero to
span.
You may see both keys.
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
x
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 ppb.
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 keys 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 Chapter 11 for
troubleshooting tips.