壓力表精度與量程的選擇
一、壓力表精度的選擇
不同壓力表有著不同的精度等級，一般情況下，普通壓力表的精度較低，分別為1.0、1.6、2.5、4.0級，而精密壓力表的精度則要高于普通壓力表，可達0.4、0.5級，不過價格也會相應的變高。因此，選擇壓力表精度時，應遵循生產工藝、經濟實用的原則。
二、壓力表量程的選擇
1.當壓力開關測量的是穩定壓力，那么最大工作壓力不應超過量程的2/3。
2.如果壓力表測量的是脈動壓力，那么最大工作壓力不應超過量程的1/2
3.為保證測量準確度，最小工作壓力應不低于量程的1/3。
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