In mechanical pressure switches , the form or change in position of a switching membrane , bourdon spring or pressure piston is transferred to one or more microswitches that are integrated into the housing and take over the actual switching operation ; the switching hysteresis is fixed or adjustable 在機械壓力開關(guān)中,開關(guān)隔膜,波登彈簧或者壓力活塞的形狀或位置改變,轉(zhuǎn)移到一個或多個集成在箱中的微動開關(guān)。這些微動開關(guān)事實上接管了開關(guān)操作。開關(guān)磁滯特性固定或者可調(diào)。