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在我国仍采用托、毫米汞柱为单位的真空仪表就有十万余台，按照国家计量法的规定，这些仪表到 一九九○年就不能使用了，为使这些仪表不致报废，本文为常用其空计提出了一个简单易行的改制方 案，并以 ＷＺＫ、ＳＧ—３、ＦＺＨ型真空计为例， 论述了改制方策的可行性和具体措施。与电离规 ＺＪ—２、 热偶规ＺＪ—５１配套的复合真空计，电离计部分通过改变放大器的增益；热偶计部分换上块Ｐａ刻度盘 则可达到改制的目的。建议借改制之机，推广使用稳定型热偶真空规：ＺＪ－５１Ｂ，ＺＪ—５１Ｃ。
There are over 100,000 vacuum gauges in our country that still use torch and millimeter mercury. According to the National Metrology Law, these gauges can not be used until 1990. In order to prevent these gauges from being scrapped, It is often used as an air gauge to propose a simple and easy reform plan. Taking WZK, SG-3 and FZH type vacuum gauges as an example, the feasibility and concrete measures of the reform strategy are discussed. With the ionization gauge ZJ-2, ZJ-51 thermocouple supporting the composite vacuum gauge, ionization gauge part of the amplifier by changing the gain; thermocouple part replaced by block Pa dial can achieve the purpose of restructuring. Proposed by the restructuring of the machine, the promotion of the use of stable thermocouple vacuum gauge: ZJ-51B, ZJ-51C.