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Calibration Procedures Teledyne API – Technical Manual - Model 300E Family CO Analyzers
186
9.1. BEFORE CALIBRATION
The calibration procedures in this section assume that the range mode, analog range and units of measure have
already been selected for the analyzer. If this has not been done, please do so before continuing (see Section
6.6 for instructions).
NOTE
If any problems occur while performing the following calibration procedures, refer to Section 12 for
troubleshooting tips.
9.1.1. REQUIRED EQUIPMENT, SUPPLIES, AND EXPENDABLES
Calibration of the M300E/EM Analyzer requires a certain amount of equipment and supplies. These include, but
are not limited to, the following:
Zero-air source.
Span gas source.
Gas lines - All Gas lines should be PTFE (Teflon), FEP, glass, stainless steel or brass.
A recording device such as a strip-chart recorder and/or data logger (optional). For electronic
documentation, the internal data acquisition system iDAS can be used.
NOTE
If any problems occur while performing the following calibration procedures, refer to Section 12 of this
manual for troubleshooting tips.
9.1.2. CALIBRATION GASES
9.1.2.1. Zero Air
Zero air or zero calibration gas is defined as a gas that is similar in chemical composition to the measured
medium but without the gas to be measured by the analyzer.
For the M300E/EM zero air should contain less than 25 ppb of CO and other major interfering gases such as CO
and Water Vapor. It should have a dew point of -5C or less.
If your application is not a measurement in ambient air, the zero calibration gas should be matched to the
composition of the gas being measured.
Pure nitrogen (N
2
) can be used as a zero gas for applications where CO is measured in nitrogen.
If your analyzer is equipped with an external zero air scrubber option, it is capable of creating zero air from
ambient air.
For analyzers without the zero air scrubber, a zero air generator such as the Teledyne API’s M701 can be used.
Please visit the company website for more information.
04288D DCN5752