Capacitive sensor - Import export

The TOR-2 transformer oil express-tester is designed to determine the moisture and hydrogen content in mineral insulating oils and ether based insulating oils. Moisture and hydrogen content is measured in parts per million (ppm). Knowing the content of hydrogen and moisture in the oil, as well as the rate of parameter change, it is possible to detect problems developing in the transformer in advance and to take timely measures to prevent damage to the transformer. Moisture measurement The device measures the activity of the water using a capacitance sensor, which ensures stability over time and contamination resistance. The oil temperature is also measured. The moisture content is calculated from these measurements. Hydrogen measurement A highly selective solid state sensor immersed directly in oil is used to measure hydrogen content. The sensor ensures accuracy and reliability of direct measurements.

TOR-1 is a device for quick and precise measurement of the moisture content in insulating oil, even in miniscule quantities. The high sensitivity and excellent long-term stability make this tester an ideal solution for constant control of moisture content in transformer oil. Operating principle The amount of water in the oil can be described as an absolute value in ppm or a relative value of aw: ppm is the ratio of moisture weight to oil weight; aw is the actual water content as a percentage of water content in fully saturated oil. A value of aw = 0 corresponds to completely dry oil, while aw = 1 corresponds to a completely saturated oil. The measurement with this sensor is based on exceptional long-term stability and resistance of capacitance sensor elements to contamination. The measured physical properties are water activity w and temperature T. Using these parameters, the device calculates the amount of water (ppm) in mineral transformer oil.