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This type of vacuum gauge adopted smaller thermal capacity nickel chromium – constantan as a heating wire and thermocouple wire with stabilizing treatment. With automatic enviroment temperature compensation and dust protection, has a simple structure, wide range, fast response, anti-pollution, anti-oxidation, small drift, long life, stable performance,reasonble  price and so on. Especially for low vacuum measurement. This type of vacuum guage can be used with the ZJ-53 glass thermocouple regulated interchangeable.

Bomb-IIIS series of Bias power supply works in high frequency conversion mode of Level 2，unipolar pulse output .Power supply voltage is adjusted by changing the voltage of the power supply of high frequency transformation circuit to realize, adjustable voltage circuit with1% stable rate.