First, use and principle
WTZK-02/03 type temperature controller (BWY-02/03 type temperature controller), suitable for measuring the temperature of transformer oil or other liquids, gases and vapors, and can reach and exceed the set value at the measured temperature. The contact signal is issued. This instrument is mainly used for measuring and controlling the oil temperature of transformers above 500KVA. The main structure of the controller consists of a thermostat (temperature probe) capillary and elastic components. The sealing system composed of these three components is filled with the temperature sensing medium. When the measured temperature changes, the liquid pressure in the temperature pack changes with the capillary, and the elastic element of the meter head produces a corresponding one. The displacement amount, which is mechanically amplified, can indicate the measured temperature and drive the micro-switch action output signal.