Knowledge Hub / Gas Measurement & Standards
A practical introduction to hydrocarbon dew point and why it matters in gas sampling and measurement systems.
Hydrocarbon dew point describes the conditions at which heavier hydrocarbons begin to condense from the gas.
If the sample passes through conditions where liquid forms, the gas reaching the analyser may no longer represent the process stream correctly.
Pressure reduction can push the sample toward condensation even when the process gas looked stable upstream.
Dew point issues affect sample systems, chromatographs, metering credibility, and contamination risk.
A basic grasp of dew point behaviour helps explain many recurring sample system and analyser issues that otherwise seem unrelated.
