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采用闭环法校验调节器,由于具有不用信号源、校验速度快、现场调校方便等优点,越来越受到现场仪表维修人员的欢迎。本文以四川仪表十八厂产品DTZ-2100调节器为例,从现场使用调节器的角度出发,对闭环校验方法作一介绍。一、校验接线及初步检查校验接线如图所示,端子②与⑧、(14)相接、端子①与⑦、(13)相接,可用0.2级0～20mA的电流表串接入(13)与①端、或者用5位数字电压表测⑦、⑧端的电压,现场
The use of closed-loop method to check the regulator, due to have no signal source, calibration speed, easy to adjust the scene and so on, more and more by field instrumentation maintenance staff welcome. In this paper, Sichuan Instrument Factory 18 products DTZ-2100 regulator, for example, from the scene to use the regulator point of view, the closed-loop calibration method for an introduction. First, verify the wiring and initial inspection Check the wiring shown in Figure, the terminal ② and ⑧, (14) phase, the terminal ① and ⑦, (13) phase can be 0.2 0 ~ 20mA ammeter string access ( 13) and ① end, or with 5 digital voltmeter test ⑦, ⑧ end of the voltage, the scene