用吸附泵作前置真空泵的无油机组,为要获得尽可能高的前五真空,需要在被抽容器压强降到1毛时关闭第一级吸附泵的阀门。用热偶计或皮氏计测量这个压强有时反映速度较慢,而且读数不够准确,因此提出试制高压强电离计的任务。电真空专业工农兵学员,在教研组工人师付和教师的支持和 The suction pump for the front vacuum pump oil-free unit, in order to obtain the highest possible first five vacuum, the need to be reduced to 1 container when the pressure vessel to close the first stage adsorption pump valve. Thermocouple meter or Pei's meter to measure the pressure sometimes reflects the slower, and the reading is not accurate enough, so put forward the task of manufacturing high pressure ionization gauge. Electric vacuum professional workers and peasants and soldiers, teachers and teachers in the teaching and research section to pay and teachers support and