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Model 400E Ozone Analyzer
Instruction Manual
CALIBRATION PROCEDURES
P/N 04316 Rev: B
177
STEP TWO
: Perform the Zero/Span Check. Zero and Span checks using the
Zero/Span Valve option are similar to that described in Section 7.3, except that:
On instruments with IZS options, Zero Air and Span Gas are supplied to the
instrument by an internal O
3
generator.
On instruments with Z/S Valve Options, Zero Air and Span Gas is supplied to
the analyzer through the Zero Gas and Span Gas inlets.
The Zero And Cal operations are initiated directly and independently with
dedicated keys (
CALZ
&
CALS
).
ZERO CAL M
RANGE = 500.0 PPB
O3 =XXX.X
< TST TST >
ZERO
SPAN
CONC
EXIT
SAMPLE RANGE = 500.0 PPB O3 =XXX.X
< TST TST > CAL
CALZ
CALS
SETUP
ZERO CAL M
RANGE = 500.0 PPB
O3 =XXX.X
< TST TST >
ZERO
CONC
EXIT
WAIT 10
MINUTES
Or until the
reading
stabilizes and
the
SPAN
button
is displayed
WAIT 10
MINUTES
Or until the
reading
stabilizes and
the
ZERO
button
is displayed
Record the O
3
reading as
displayed on the
instrument’s front
panel
SAMPLE RANGE = 500.0 PPB O3 =XXX.X
< TST TST > CAL
CALZ
CALS
SETUP
Record the O
3
reading as
displayed on the
instrument’s front
panel
Press
EXIT
to Return to the
Main
SAMPLE
Display