SS1000 Operator’s Manual
3– 01-92-4 A .ver 97020-0009461
2. Turn on the validation gas and adjust the flow to the specified value.
3. Check the factory calibration report for S Factor and/or S Factor
Offset parameter values to be used when measuring validation gas.
4. If applicable, set the appropriate S Factor and/or S Factor Offset
parameter values (see “To change parameters in Mode 2” on
page 3-6).
5. Make a measurement after the gas flows for approximately five
minutes or when the value on the LCD settles.
6. After validation, switch the analyzer back to process ga
s adjust the
flow to the specified value to return to normal operation.
7. If applicable, reset the S Factor and/or S Factor Offset parameter
values to those used for normal operation (typically 1 and 0,
respectively).
SpectraSensors recommends validating the analyzer using only
H
2
O & CO
2
in
CH
4
. A bottle of test gas with a certified concentration representing 50% of full
scale should be used.
Calibrating the Analyzer
Calibrating the analyzer is typically not required under normal circumstances.
SpectraSensors calibrates each analyzer to a National Institute of Standards
and Technology (NIST) traceable standard before shipping the unit to the end
user. Because SpectraSensors analyzers use a non-contact form of
measurement, they are relatively insensitive to contamination, are quite
rugged and virtually maintenance free ensuring years of reliable service.
The adjustment setpoints of the analyzer flowmeters and
pressure regulators will be interactive and may require
readjustment multiple
times until the final setpoints are obtained.
The analyzer system has been designed for the sample flow rate
specified. A lower than specified sample flow rate may adversely
affect analyzer performance. If you are unable to attain the
specified sample flow rate, contact your factory sales
representative.
When procuring a gas standard, make sure the background gas is
that specified (CO
2
in CH
4
) or a mix that closely resembles the
contents of the process stream and have the
gas standard
certified to better than the specified precision of the analyzer, if
possible.
UK Distibution by IMA Ltd Tel: +44 (0)1943 878877 Email: info@ima.co.uk Web: www.ima.co.uk
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