Product category:
Humidity and moisture sensing systems
News Release from: Barber InSys | Subject: Lufft A1-SDI
Edited by the Processingtalk Editorial
Team on 28 November 2005
Moisture measurement in oil
Moisture measurement in lubricating and insulation oils makes an important contribution to long-term maintenance functionality of plant and equipment
With the Lufft A1-SDI Indicator and Moisture Sensor Moisture measurement in lubricating and insulation oils makes an important contribution to long-term maintenance functionality of plant and equipment and the water content of transformer oil has significant influence on its insulation properties
This article was originally published on Processingtalk on 11 May 2004 at 8.00am (UK)
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Moisture monitoring is therefore of essential importance to daily operations.
In the same way as gas moisture, the moisture content of oil can be stated absolutely in ppm or relatively as the water content aw:while ppm is the water quantity/oil quantity, aw is the actual water content in relation to the water content of a saturated probe.
Oil that is completely free of water has an aw value of 0; completely saturated oil has an aw value of 1.
The new Lufft moisture sensor is based on a long-term stable, chemically resistant, capacitive sensor.
The measurement values that can be selected are water activity (aw), temperature (T) and the calculated water content in ppm for mineral transformer oil.
For non-mineral transformer oils, the device can be adapted by inputting the oil specific parameters of the specific oil into the SDI (Serial Digital Interface) Indicator.
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