lDefinition
- Process of changing the hot, wet, dirty exhaust gas into a cool, dry, clean gas sample without loosing constituent concentration.
Prime
consideration in the design of an instrument to deliver accurate measurements
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lElectrochemical sensors require cool, dry gas delivered at proper flow and pressure.
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lProper sample conditioning means longer life sensors, high accuracy, and repeatability.
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lThe big deal:
–Handle
reactive gases - NO2 & SO2
–Dry
Basis sample for reporting
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