Teledyne GFC-7000E - Trace CO2 Analyzer User Manual
Page 147
Model GFC7000E Instruction Manual
Calibration Procedures
04584 Rev A1
136
STEP THREE: Perform the zero/span calibration. Zero and span checks using the zero/span
valve option are similar to that described in Section 3.3, except that zero air and span gas is
supplied to the analyzer through the zero/span valves rather than through the sample inlet port.
The zero and cal operations are initiated directly and independently with dedicated keys (CALZ &
CALS).
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
CALZ
CALS 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 below1.0 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> CAL CALZ CALS SETUP SAMPLE STABIL=XXX.X PPM CO2 =XXX.X < TST TST > CAL CALZ CALS 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.