Product Description
Application:
CE marked online oil moisture meter is specifically designed to measure the moisture content in oils. It is the ideal choice for on-line or portable measurement of moisture content in transformer oil, lubricating oils and insulating oils to ensure proper operation of equipment and machinery. Relative water content is determined by continuous measurement by spiral rod-type sensor. Data will be updated and stored continuously.
Moisture has a huge bad impact on the insulation characteristics of transformer oils, so continuous testing of transformer oils is very important. The online moisture meter directly measures the aw and temperature T of water in oil. Using these parameters, the absolute moisture content (ppm) of the transformer oil or lubricant can be calculated.
The measurement of moisture in oil is similar to air humidity. The content of moisture in oil can be described as an absolute value expressed in ppm and a relative value expressed in water activity aw. HOPU online moisture tester can directly measure the active aw and temperature T of water in oil. These parameters can be used to calculate the absolute moisture content (ppm) of transformer oil, and the moisture content of other oils such as non-mineral transformer oil and lubricating oil can be calculated through specific parameters in the calibration oil.
-ppm (mass of water/mass of oil)
-aw (the ratio of the actual value of the moisture in the oil to the saturated moisture content in the oil at that temperature)
aw = 0 means that there is no water in the oil; and aw = 1 means that the oil is fully saturated.
Features:
1. Support online and offline measurement;
2. High detection accuracy, fast speed and good repeatability;
3. Real-time display of water activity (aw) and temperature value (t) in the tested oil;
4. Intuitive display and easy to carry;
5. The signal output type is: RS232 / 4 ~ 20mA; RS485 or USB is optional
7. Two-way relay alarm limit can be set arbitrarily.
