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Calibration Procedures Teledyne API – Technical Manual - Model 300E Family CO Analyzers
206
9.6.2. PRESSURE CALIBRATION
A sensor at the exit of the sample chamber continuously measures the pressure of the sample gas. This data is
used to compensate the final CO concentration calculation for changes in atmospheric pressure and is stored in
the CPU’s memory as the test function PRES (also viewable via the front panel).
NOTE
This calibration must be performed when the pressure of the sample gas is equal to ambient
atmospheric pressure.
Before performing the following pressure calibration procedure, disconnect the sample gas pump and
the sample gas-line vent from the sample gas inlet on the instrument’s rear panel.
To cause the analyzer to measure and record a value for PRES, press.
SETUP X.X
CFG DAS RNGE PASS CLK EXIT
SETUP X.X
COMM VARS EXIT
SETUP X.X
EXIT
ENTR
Continue pressing until ...
discards the
new setting.
accepts the
new setting.
DIAG
PREV NEXT EXIT
DIAG PCAL
EXIT
DIAG PCAL
04288D DCN5752