Operating the Analyzer
301-92-4 A .ver 97020-00094
–13
where when a sample from only one concentration standard is available.
To adjust the analyzer reading:
1. Validate the analyzer using one or two concentration standards [see
“Validating the Analyzer” on page 3-15].
2. Calculate the S Factor and/or S Factor Offset parameter(s) using
the equations above.
3. Follow the procedure under “To change parameters in Mode 2”
on page 3-6 to enter the new values.
Confirm the new values by re-measuring the bottle(s) of test gas.
Changing Measurement Range (for dual-range
moisture systems onl
y)
The measurement range on moisture systems that have been specifically
calibrated for dual-range operation can be switched by changing a few key
parameters. Refer to the parameter specifications that come with the analyzer
calibration documents.
To change measurement range:
1. Follow the procedure under “To change parameters in Mode 2”
on page 3-6 to enter new parameter values.
2. Scroll through the parameters by pressing the * key until arriving at
the Peak Tracking parameter.
SpectraSensors recommends validating the analyzer using only
H
2
O & CO
2
in CH
4
. Bottles of test gas with certified concentrations
of approximately 20% and 80% of full scale are recommended for
two point validation. For single point validation, a bottle with a
certified concentration of approximately 50% of full scale should
be used.
When procuring a gas standard, make sure the background gas is
that specified (H
2
O & CO
2
in CH
4
) or a mix that closely resembles
the contents of the process stream and have the gas stan
dard
certified to better than the specified precision of the analyzer, if
possible.
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