機械壓力開關的選型方法
1.對于同一精度的機械壓力開關，量程選得越大，實際使用的精度越低。為了保證測量時的實際使用精度，量程應該盡量選得小一些。
2.為了保證彈性元件能在彈性變形的安全范圍內可靠地工作，選擇機械壓力開關的量程時，要留有足夠的余地。一般量程的選擇原則是：在被測壓力較穩定的情況下，最大壓力值不應超過量程的三分之二，而在被測壓力波動較大的情況下，最大壓力值不應超過量程的二分之一。為保證測量精度，被測壓力最少值不應低于量程的三分之一。
3.根據被測介質的性質，選擇不同類型的壓力控制器。具有腐蝕的介質，應選用彈性元件為不銹鋼材料制成的機械壓力開關。
西安仕樂克控制器制造有限公司 (www.a3025.cn)
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