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1975年12月,由重庆煤矿安全仪器厂研制的AJH—3型氧气呼吸器校验仪,经四川省煤炭工业局主持的技术鉴定会议,已正式定型,交付生产。 该仪器主要配备于军事化矿山救护队,用以检验氧气呼吸器的组件和成品性能。仪器用水柱液体压力计、玻璃管转子流量计等来测定氧气呼吸器成品及其组件的气密程度、氧气流量、自动调节阀门启闭性能以及阀门或气路对一定气流的阻力等。仪器具有
December 1975, developed by the Chongqing Coal Mine Safety Instrument Factory AJH-3 oxygen respirator calibrator, the Sichuan Provincial Coal Industry Bureau presided over the technical appraisal meeting, has been formally finalized, delivered to production. The instrument is mainly equipped with militarized mine rescue teams to test the components and finished product performance of the oxygen respirator. Instrument water column liquid pressure gauge, glass tube rotor flow meter to measure the degree of oxygen breathing apparatus products and components of the tightness, oxygen flow, automatically adjust the valve opening and closing performance as well as the valve or gas path of a certain flow resistance. Instrument has