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CALIBRATION PROCEDURES
Model 400E Ozone Analyzer
Instruction Manual
170
P/N 04316 Rev: B
STEP TWO:
Perform the Zero/Span Calibration CHECK Procedure:
SAMPLE RANGE = 500.0 PPB
O3 =XXX.X
a
< TST TST >
CAL
SETUP
SAMPLE RANGE = 500.0 PPB
O3 =XXX.X
a
< TST TST >
CAL
SETUP
WAIT 10
MINUTES
Or until the
reading
stabilizes and
the
SPAN
button
is displayed
ACTION:
Allow Zero Gas to enter
the sa
mple port on the rear of
ACTION:
Switch gas streams to
span gas.
SAMPLE RANGE = 500.0 PPB
O3 =XXX.X
a
< TST TST >
CAL
SETUP
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.
ACTION:
Record the O3 reading presented in the
upper right corner of the display.
DO NOT
press the
ZERO
key!
ACTION:
Record the O3 reading presented in the
upper right corner of the display.
DO NOT
press the
ZERO
key!
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.