如何選擇不同的壓力開關
壓力開關可分為機械式壓力開關和電子式壓力開關。機械式壓力開關和電子式壓力開關主要的區別在于，機械式壓力開關多了一個單刀雙擲功能，它可以直接連通電路配合電器使用，機械式壓力開關的負載比電子式壓力開關要大，而電子式壓力開關則是直接輸出開關量信號并且需要外接電源。
如果您需要的是機械式壓力開關則在選購之前要確認開關范圍、開關滯后、本體材質、開關功能(常開或常閉或者單刀雙擲)、接口的尺寸、介質溫度、電氣連接形式、防護等級。
如果您需要電子式壓力開關則需確認：量程、開關范圍、精度、開關數量、開關功能(常開、常閉或PNP、NPN輸出)、接口尺寸、介質溫度、電氣連接方式、防護等級。
西安仕樂克控制器制造有限公司 (www.shelok.net)
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