
EPA Protocol Calibration
Model 300E Carbon Monoxide Analyzer
Instruction Manual
140
P/N 04288 REV: A
8.1.4.
Performing EPA Calibrations and Checks
The procedures for performing calibrations are indentcial to those decribed in
Sections 8.2 and 8.3.
If using the AutoCal feature to perform a calibration check, set the
CALIBRATE
parameter to
NO
.
WAIT 10
MINUTES
even if the
SPAN
button is displayed
immediately.
Ensure adequate
data is made
available.
SAMPLE
RANGE = 50.0 PPM CO =??.??
< TST TST > CAL
CALZ
CALS
SETUP
ZERO CAL M
RANGE = 50.0 PP CO =1.23
< TST TST >
ZERO
CONC
EXIT
M-P CAL
RANGE = 50.0 PPM CO =1.23
< TST TST > ENTR CONC
EXIT
WAIT 10
MINUTES
even if the
ZERO
button is displayed
immediately.
Ensure adequate
data is made
available.
If either the
ZERO
or
SPAN
buttons
fail to appear see
Section 9 for
troubleshooting
tips.
Analyzer enters
ZERO CAL
Mode and
switches the Z/S valves
to supply Zero Air
See Table 5-1 for Z/S
Valve States during
this operating mode
EXIT
halts the
calibration process and
returns the unit to
SAMPLE
Mode.
SAMPLE
RANGE = 50.0 PPM CO =40.58
< TST TST > CAL
CALZ
CALS
SETUP
ZERO CAL M
RANGE = 50.0 PP CO =40.58
< TST TST >
SPAN
CONC
EXIT
M-P CAL
RANGE = 50.0 PPM CO =40.00
< TST TST > ENTR CONC
EXIT
EXIT
halts the
calibration process and
returns the unit to
SAMPLE
Mode.
Analyzer enters
SPAN CAL
Mode and
switches the Z/S valves
to supply SPAN Gasr
See Table 5-1 for Z/S
Valve States during
this operating mode
To perform a manual calibration CHECK use the same procedures but DO NOT press
the
ENTR
Key after initiating one of the analyzer’s calibration modes. The following
examples show the keystroke sequences for manually checking Zero and SPAN
calibration with a Zero/Span Valve option installed and operating.