Teledyne 400E Instruction Manual page 168

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