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如何查找壓力開關(guān)精度不高的原因
1.查找壓力開關(guān)的電源是否正常，如果是機(jī)械壓力開關(guān)則應(yīng)查看設(shè)備的供電電源是否正常，如果是智能型壓力開關(guān)則直接檢查提供開關(guān)工作的電源即可。
2.查找壓力開關(guān)的參照值是否正確
如果參照的壓力開關(guān)的出現(xiàn)誤差的概率較高，則需另換一只精度較高的壓力開關(guān)進(jìn)行參照。
3.查找壓力開關(guān)設(shè)定的壓力值是否正常
一般情況下，壓力開關(guān)的動(dòng)作點(diǎn)是需要設(shè)定在量程的20%-80%之間的，超出了該范圍就很有可能降低測(cè)量精度。
4.查看與壓力開關(guān)相應(yīng)的接線是否接觸良好
壓力開關(guān)是直接輸出開關(guān)量信號(hào)或者模擬量信號(hào)的壓力測(cè)量?jī)x表，因此務(wù)必要求確保與壓力開關(guān)連接的各個(gè)接線。
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