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  • Classification vacuum measurement tools
    Classification vacuum measurement tools Vacuum pumps used in the vacuum gauge can be divided into two categories: one is able to directly measure the absolute pressure gauge systems, such as McGraw (Mcleod) gauge; The other is a relative vacuum gauge calibrated by an absolute vacuum gauge u...

  • Status of the delayed impact of the air pump on-time
    Status of the delayed impact of the air pump on-time With the vacuum chamber air temperature, the vacuum pump is turned on delay time increases gradually. Because the relative humidity is constant, the moisture content of the air will increase with increasing temperature, increasi...

  • Three methods of vacuum dechlorination method
    Three methods of vacuum dechlorination method   Decompression dechlorination is injected in an appropriate amount of hydrochloric acid in salt water, the pH was adjusted to 1.8 to 2.2, while maintaining a high degree of vacuum, the chlorine gas emerges and recycling. Vacuum dechlorination...

  • Vacuum classification
    Vacuum classification Depending on the scope and effectiveness of the use of suction pumps can be divided into three categories: (1) Usually the pump, the pressure can reach 1.333 ~ 100kPa (10 ~ 760mmHg) as "rough" vacuum. (2) pump, a pressure of up to 0.133 ~ 133.3Pa (0.001 ~ 1mmHg) ...