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0.4級(ji)精密壓(ya)力表

0.4級精密(mi)壓力表是一種按精(jing)(jing)(jing)度(du)等(deng)級(ji)分(fen)類的(de)(de)(de)稱謂(wei), 所(suo)(suo)謂(wei)0.4級(ji)是指(zhi)該精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)壓(ya)(ya)(ya)力(li)(li)(li)(li)(li)表的(de)(de)(de)精(jing)(jing)(jing)度(du)等(deng)級(ji)為(wei)(wei)(wei)其(qi)測(ce)(ce)量上(shang)(shang)限(xian)值(zhi)(zhi)(zhi)的(de)(de)(de)±0.4%,亦(yi)既允(yun)(yun)(yun)許的(de)(de)(de)示(shi)值(zhi)(zhi)(zhi)基(ji)(ji)本(ben)(ben)誤(wu)差(cha)為(wei)(wei)(wei)其(qi)測(ce)(ce)量上(shang)(shang)限(xian)值(zhi)(zhi)(zhi)的(de)(de)(de)±0.4%.如照片所(suo)(suo)示(shi),該精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)壓(ya)(ya)(ya)力(li)(li)(li)(li)(li)表的(de)(de)(de)精(jing)(jing)(jing)度(du)等(deng)級(ji)為(wei)(wei)(wei)0.4級(ji),測(ce)(ce)量上(shang)(shang)限(xian)為(wei)(wei)(wei)1.6MPa,其(qi)允(yun)(yun)(yun)許的(de)(de)(de)示(shi)值(zhi)(zhi)(zhi)基(ji)(ji)本(ben)(ben)誤(wu)差(cha)為(wei)(wei)(wei): 1.6MPa×0.4%=±0.0064MPa ,0.4級(ji)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)壓(ya)(ya)(ya)力(li)(li)(li)(li)(li)表在精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)壓(ya)(ya)(ya)力(li)(li)(li)(li)(li)表精(jing)(jing)(jing)度(du)系(xi)列(lie)中屬低(di)精(jing)(jing)(jing)度(du)等(deng)級(ji)的(de)(de)(de)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)壓(ya)(ya)(ya)力(li)(li)(li)(li)(li)表,它不僅常用(yong)(yong)于壓(ya)(ya)(ya)力(li)(li)(li)(li)(li)的(de)(de)(de)量值(zhi)(zhi)(zhi)傳遞,更多是用(yong)(yong)于在線的(de)(de)(de)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)測(ce)(ce)量之用(yong)(yong). 中華人民共和國標(biao)(biao)準 GB/T 1227-2002 精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)壓(ya)(ya)(ya)力(li)(li)(li)(li)(li)表中規(gui)定,0.4級(ji),測(ce)(ce)量上(shang)(shang)限(xian)為(wei)(wei)(wei)1.6MPa的(de)(de)(de)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)壓(ya)(ya)(ya)力(li)(li)(li)(li)(li)表的(de)(de)(de)標(biao)(biao)度(du)分(fen)格總數(shu)為(wei)(wei)(wei)160分(fen)格,其(qi)小分(fen)格值(zhi)(zhi)(zhi)則為(wei)(wei)(wei): 1.6MPa÷160分(fen)格=0.01MPa/分(fen)格.也就是說(shuo),0.4級(ji),測(ce)(ce)量上(shang)(shang)限(xian)為(wei)(wei)(wei)1.6MPa的(de)(de)(de)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)壓(ya)(ya)(ya)力(li)(li)(li)(li)(li)表的(de)(de)(de)示(shi)值(zhi)(zhi)(zhi)基(ji)(ji)本(ben)(ben)誤(wu)差(cha)不得超過±0.64個小分(fen)格,既±0.0064MPa. 0.4級(ji)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)壓(ya)(ya)(ya)力(li)(li)(li)(li)(li)表的(de)(de)(de)實(shi)(shi)際示(shi)值(zhi)(zhi)(zhi)基(ji)(ji)本(ben)(ben)誤(wu)差(cha)(包(bao)括(kuo)零點誤(wu)差(cha))需要在參比工(gong)作(zuo)條件(jian)下(xia)測(ce)(ce)定, 所(suo)(suo)謂(wei)參比工(gong)作(zuo)條件(jian)有三,一是儀表應(ying)處于正常工(gong)作(zuo)位(wei)置(未指(zhi)明時,正常工(gong)作(zuo)位(wei)置系(xi)指(zhi)垂(chui)直(zhi)安裝),二是負(fu)荷均勻變化(hua),三是周圍(wei)環(huan)境溫度(du)為(wei)(wei)(wei)20℃(0.4級(ji)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)壓(ya)(ya)(ya)力(li)(li)(li)(li)(li)表允(yun)(yun)(yun)許偏差(cha)±3℃). 較(jiao)其(qi)它精(jing)(jing)(jing)度(du)等(deng)級(ji)的(de)(de)(de)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)壓(ya)(ya)(ya)力(li)(li)(li)(li)(li)表,0.4級(ji)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)壓(ya)(ya)(ya)力(li)(li)(li)(li)(li)表在實(shi)(shi)際工(gong)況(kuang)中是一種相對(dui)應(ying)用(yong)(yong)多的(de)(de)(de)精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)壓(ya)(ya)(ya)力(li)(li)(li)(li)(li)表. 其(qi)結構成熟、指(zhi)示(shi)連(lian)續且(qie)直(zhi)觀(guan)、性能穩定且(qie)耐用(yong)(yong)、量限(xian)段(duan)完整且(qie)價格較(jiao)低(di),加之適于在線精(jing)(jing)(jing)密(mi)(mi)(mi)(mi)(mi)測(ce)(ce)量等(deng)獨特的(de)(de)(de)優勢(shi)使其(qi)得到了(le)特別廣泛的(de)(de)(de)應(ying)用(yong)(yong).