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Moisture In Oil


The products in this section are all designed to measure in real time, the temperature of the oil and the moisture content in oil in two parameters:

  1. ppm which is the mass of water to the mass of oil.
  2. aw which is the actual water content as a fraction of the water content in water saturated oil. This is similar to an RH measurement in air and will change with temperature. An aw concentration =0 means no water is present and a value = 1 indicates the oil is saturated with water (for that temperature).

Typical applications for these sensors include electrical transformers, large engines, hydraulic systems and a variety of marine applications (GL Certified). Measurement of water in oil will vary with the type of oil used. We have calibration information for most commonly used oils but in some cases we may have to have a sample of the oil to be monitored to create the proper calibrated response (one time laboratory charges may apply).

Please contact AirTest if you would like assistance in selecting the right product for your application.


Moisture In Oil Transmitters For Fixed Installations

EE36 EE381 EE385
Moisture In Oil Transmitter
With Remote Probe
Moisture in Oil Transmitter
with Integrated Probe
Basic Moisture
in Oil Transmitter

Portable Moisture In Oil Measurement

Hand Held Probe
Published: February 16, 2004 Last Updated: October 28, 2008