壓力表如何測量腐蝕性介質
一、一般腐蝕介質
當壓力表被測介質的性質為一般腐蝕性介質時，首先用戶可以選取帶不銹鋼外殼或者外殼噴涂四氟的壓力表，因為不銹鋼彈性元件一般可以耐1～2年的腐蝕；其次，用戶還應選擇外殼防護等級高的壓力表，以免外部介質侵蝕到表內部。
二、強腐蝕介質
當壓力表測量的介質為強腐蝕介質時，使用單位可以增加隔離裝置，然后在隔離裝置中加入帶腐蝕的被測介質，一般情況下，隔離裝置要求可以使用半年以上不變質，否則很容易影響壓力表的靈敏度。
其次，除了增加裝置外，使用單位還可以提前選取隔膜式壓力表，該壓力表避免了介質與表盤的直接接觸。
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