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CALIBRATION PROCEDURES
Model 400E Ozone Analyzer
Instruction Manual
168
P/N 04316 Rev: B
STEP THREE:
Perform the Zero/Span Calibration Procedure:
SAMPLE RANGE = 500.0 PPB O3 =XXX.X
a
< TST TST >
CAL
SETUP
M-P CAL
RANGE = 500.0 PPB O3 =XXX.X
< TST TST >
ZERO
CONC
EXIT
EXIT
to Return to the Main
SAMPLE
Display
M-P CAL
RANGE = 500.0 PPB O3 =XXX.X
< TST TST >
ENTR
CONC
EXIT
WAIT 10
MINUTES
Or until the
reading
stabilizes and
the
SPAN
button
is displayed
ACTION:
Allow Zero Gas to enter
the sample port on the
rear of the instrument.
ACTION:
Switch gas streams to
span gas.
M-P CAL
RANGE = 500.0 PPB O3 =XXX.X
< TST TST >
SPAN
CONC
EXIT
M-P CAL
RANGE = 500.0 PPB O3 =XXX.X
< TST TST >
ENTR
SPAN CONC
EXIT
M-P CAL
RANGE = 500.0 PPB O3 =XXX.X
< TST TST > ENTR CONC
EXIT
WARNING!
Pressing
ENTR
changes the calibration
of the instrument.
WAIT 10
MINUTES
Or until the
reading
stabilizes and
the
ZERO
button
is displayed
NOTE:
In certain instances where low Span gas
concentrations are present ( = 10 ppm),
both the
Zero
&
SPAN
buttons may appear
simultaneously
If either the
ZERO
or
SPAN
buttons fail to
appear see Section 9 for troubleshooting tips.
Press
ZERO
only if
performing a ZERO
CALIBRATION
If performing a ZERO
CHECK, See Section 7.3.
WARNING!
Pressing
ENTR
changes the calibration
of the instrument.
Press
SPAN
only if
performing a SPAN
CALIBRATION
If performing a SPAN
CHECK, See Section 7.3.
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 Section 11 for troubleshooting tips.