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1引言齐齐哈尔造纸厂能源计量仪表多为计量各车间及各纸机生产中消耗清水及蒸汽流量。为确保仪表正常运行，除对新安装的仪表做例行检查外，还需对现场运行仪表进行定期巡回检查。现以与孔板节流装置配套的电动单元组合仪表DDZ—Ⅱ型矢量机构变送器为例论述差压变送器运行中故
1 Introduction Qiqihar paper mills and more energy measurement instruments for the measurement of the workshop and the production of paper machines in the consumption of fresh water and steam flow. In order to ensure the normal operation of the instrument, in addition to routine inspection of the newly installed instrument, it is also necessary to inspect the operation of the instrument on a regular basis. Now with the aperture plate throttle device supporting electric unit combination meter DDZ-Ⅱ-type vector mechanism transmitter as an example to discuss the differential pressure transmitter operation