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Teledyne GFC-7000E - Trace CO2 Analyzer User Manual

Page 147

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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.