日本不卡一区视频-日本不卡视频一区二区三区-日本不卡视频一区二区-日本不卡高清免费v日本-色国产视频

產(chǎn)品分類

當(dāng)前位置: 首頁 > 儀表工具產(chǎn)品 > 專用儀表 > 壓力儀表

類型分類:
科普知識
數(shù)據(jù)分類:
壓力儀表

壓力儀表故障判斷思路

發(fā)布日期:2022-10-09 點(diǎn)擊率:96

  現(xiàn)場使用的壓力儀表可分為就地和遠(yuǎn)傳兩大類,就地的以彈簧管壓力表為主。其次還有膜盒微壓計,就地安裝的壓力表出現(xiàn)故障較明顯,通過觀察大多能發(fā)現(xiàn)問題所在,對癥更換或修理即可。其中導(dǎo)壓管或取樣閥門堵塞、泄漏是最常見的故障。

  遠(yuǎn)傳的壓力變送器其輸出信號大多為4~,其故障表現(xiàn)有:無輸出,零點(diǎn)有偏差,輸出偏高、偏低,輸出波動等現(xiàn)象。遠(yuǎn)傳壓力表輸出的是電阻信號,其故障表現(xiàn)有:斷路、短路、接觸不良而使壓力顯示儀表出現(xiàn)無指示、指示最小、指示波動等故障。

  壓力參數(shù)具有時間常數(shù)小,變化較快的特性,在判斷壓力系統(tǒng)故障時需要注意。


下一篇: PLC、DCS、FCS三大控

上一篇: 孔板流量計對介質(zhì)要求

推薦產(chǎn)品

更多
主站蜘蛛池模板: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |