900G02-0102
900G02-0102
900G02-0102滯后: 滯后的通俗意思是:逐級施加負荷再依次卸下負荷時,對應(yīng)每級負荷,理想情況下應(yīng)有樣的讀數(shù),但事實上下,這不的程度用滯后誤差這指標來表示。國標中是這樣來計算滯后誤差的:傳感器的滯后誤差(H)按下式計算:H=ΔθH/θn×。ΔθH --同試驗點上3次行程實際輸出信號值的算術(shù)平均與3次上行程實際輸出信號值的算術(shù)平均之間的大差值(mv)。
蠕變和蠕變恢復:要求從兩個方面檢驗傳感器的蠕變誤差:其是蠕變:在5-10秒時間無沖擊地加上額定負荷,在加荷后5~10秒讀數(shù),然后在30分鐘內(nèi)按定的時間間隔依次記下輸出值。傳感器蠕變(CP)按下式計算:CP=θ2 - θ3/θn×。其二是蠕變恢復:盡快去掉額定負荷(在5~10秒時間內(nèi)),卸荷后在5~10秒內(nèi)立即讀數(shù),然后在30分鐘內(nèi)按定的時間間隔依次記下輸出值。傳感器的蠕變恢復(CR)按下式計算:CR=θ5 - θ6 /θn×。 允許使用溫度:規(guī)定了此傳感器能適用的場合。例常溫傳感器般標注為:-20℃ --- +70℃。高溫傳感器標注為:-40℃ --- 250℃。
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