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Model 300E Carbon Monoxide Analyzer
Instruction Manual
CALIBRATION PROCEDURES
P/N 04288 REV: A
127
STEP THREE:
Perform the Zero/Span Calibration Procedure:
SAMPLE
RANGE = 50.0 PPM
CO =
< TST TST >
CAL
SETUP
M-P CAL
RANGE = 50.0 PPM
CO =
< TST TST >
ZERO
CONC
EXIT
EXIT
to Return to the Main
SAMPLE
Display
M-P CAL
RANGE = 50.0 PPM
CO =
< 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 = 50.0 PPM
CO =
< TST TST >
SPAN
CONC
EXIT
M-P CAL
RANGE = 50.0 PPM
CO =
< TST TST >
ENTR
SPAN CONC
EXIT
M-P CAL
RANGE = 50.0 PPM
CO =
< TST TST > ENTR CONC
EXIT
This operation changes the calculation
equations and zeroes the instrument
WARNING!
If you are performing a ZERO CHECK
DO NOT
press
ENTR
If performing a CHECK, press
EXIT
now.
WAIT 10
MINUTES
Or until the
reading
stabilizes and
the
ZERO
button
is displayed
This operation changes the calculation
equations and sets the Span of the instrument
NOTE:
In certain instances where low Span gas
concentrations are present (? 10 ppm),
both the
Zero
&
SPAN
buttons may appear
simultaneously
WARNING
!
If you are performing a Span CAL CHECK
DO
NOT
press
ENTR
If performing a CHECK, press
EXIT
now.
If either the
ZERO
or
SPAN
buttons fail to
appear see Section 9 for
troubleshooting tips.
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.