Compressed Air Measurement Knowledge Base - Vaisala

​Infographic: Frequently Asked Questions about Dew Point in Compressed Air - two formats available below:
PDF (optimal for printing)
JPG (optimal for mobile devices)

Compressed air that is clean and dry can be ensured by accurate dew point measurement instruments. Since dew point measurements can be made almost anywhere on the supply or demand side of a system, the application conditions and instrument requirements can vary significantly. Furthermore, sensors must withstand exposure to a number of contaminants like water spikes, ambient humidity, compressor oil, and chemical impurities.

Vaisala sensors can handle all of the above. What’s more, they have the fastest wet-to-dry response time on the market and minimal drift allowing for a 2-year calibration interval.

Dew point measurement combined with pressure measurement offers further unique advantages. When dew point data is coupled with live pressure input, conversions to atmospheric pressure or ppm are available online leaving no ambiguity in the information. As an example, regulative requirements of medical gas can be fulfilled easily and quickly. As a market first, Vaisala now has a product specifically designed to meet this need. The Vaisala Dewpoint and Pressure Transmitter DPT146 is especially well suited for demanding compressed air applications.