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+44 (0)115 986 8875
Web:
Tel:
+44 (0)115 9003 600
Filtertechnik
1 Central Park, Lenton Lane, Nottingham, NG7 2NR
Registered in England No: 03969985 VAT No: 760 821 731
Certification No. UK002838
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Water Sensor
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% Saturation (RH)
The RH option incorporates a sensor into the fluid circuit which measures water saturation as a
percentage.
The RH sensor measures water content relative to the saturation point of the liquid and outputs the
degree of saturation in the range 0-100%. A reading of 0% would indicate a fluid free of water, while
a reading of 100% would indicate a fluid that is saturated with water (see diagram below). The
capacitance sensor absorbs water molecules from the fluid which change its capacitance value, that
capacitance value is directly proportional to the saturation level of the fluid.
Since the effects of free water are more harmful than those of dissolved water, water levels should
be maintained well below the saturation point. However, even dissolved water can cause damage,
therefore every reasonable effort should be made to keep the saturation levels as low as possible.
As a guideline we recommend maintaining saturation levels below 45% in all equipment.
