Accurately detecting moisture is a challenge for the gas industry. Excess moisture in natural gas causes problems such as corrosion of equipment such as pipelines and storage tanks and gas hydrate formation. Measuring moisture in natural gas is not a difficult application, but you do want a reliable and continuous measurement. Transfer of glycol and compressor oils can quickly damage the in-situ sensors. Triethylene glycol (TEG) is added to dry natural gas before it is sent downstream for commercial or industrial use. These glycols shift the sensor's readings.
Read more about the best solution for accurately measuring moisture in natural gas here.