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zxd114
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樓主  發(fā)表于: 2017-10-10 15:28
有臺設備要測產(chǎn)品氣密性。 測試壓力1.0MPA，選擇0-1.6MPA量程, 4-20MA標準電流信號輸出。FX2N-2AD模塊，求平均后再進(jìn)行浮點(diǎn)運算，然后數據輸出。要求以6000PA的泄漏量為產(chǎn)品判定標準。
現在遇到的問(wèn)題是加壓后產(chǎn)品測試過(guò)程中，泄漏量數值跳動(dòng)很大±1200PA.。達不到測試要求。。。
疑問(wèn)1.壓力變送器是否精度與穩定性不夠高
     2.空氣充入后是否有回蕩，如果有回蕩，有什么辦法解決
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1樓  發(fā)表于: 2017-10-14 12:56
這個(gè)有外在因素很多會(huì )影響
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