Application:
Series TPEE are specially designed for the measurement of water
content in oil. Series TPEE is ideal for online monitoring of
moisture in lubrication or insulation oil, which is very important
for the long-term performance and adaptive maintenance of plant and
machinery. For instance, moisture affects dramatically the
insulation characteristics of electrical transformer oil and
therefore continuous monitoring is extremely important.
Humidity measurement in
oil:
Similar to the humidity in the air, the water content in an oil can
be described by the absolute value in ppm or by the relative value
aw: - ppm (mass of water / mass of oil) - aw (actual water content
as fraction of the water content in the saturated oil) aw = 0
corresponds to water-free oil, while aw = 1 describes fully
saturated oil. Aw measurement with TPEE transmitter series is based
on the outstanding long term stability and resistance to pollution
of the TPEE capacitive sensor elements series HC.
Product Versions:
The physical quantities measured are
water activity aw and temperature T. With these quantities TPEE
calculates the water content(ppm) in mineral transformer oils.
Calculation of water content in non-mineral transformer oils and
lubrication oils can be accomplished by downloading specific
parameters of the oil.
