二、電dian子zi天tian平ping對dui使shi用yong環huan境jing條tiao件jian要yao求qiu很hen高gao。環huan境jing條tiao件jian也ye是shi影ying響xiang電dian子zi天tian平ping計ji量liang性xing能neng的de一yi個ge重zhong要yao因yin素su。電dian子zi天tian平ping的de操cao作zuo說shuo明ming書shu中zhong如ru果guo沒mei有you指zhi定ding特te殊shu溫wen度du界jie限xian,則ze天tian平ping應ying在zai-10℃~40℃的溫度條件下正常工作;若指定了特殊的溫度界限,則天平應在規定的溫度條件下工作;電子天平對環境的濕度也有要求,如Ⅰ級天平要求相對濕度不大於80%。
三、dianzitianpingzaishiyongqianyidingyaotiaozhenghaoshuiping。yibangaojingdudedianzitianpingdoudaiyoushuipingtiaozhengzhuangzhiheshuizhunqi,shiyongzhong,yaojingchangduitianpingdeshuipingzhuangtaijinxingjianzha。shijishang,youxieshiyongzhechanghushileduitianpingdeshuipingzhuangtaidejianzha(電子天平因移動或其它原因,常造成四角不平或不水平等)這也是造成天平數據不準的主要原因。
四、電(dian)子(zi)天(tian)平(ping)要(yao)隨(sui)時(shi)校(xiao)準(zhun)。有(you)人(ren)認(ren)為(wei),電(dian)子(zi)天(tian)平(ping)在(zai)經(jing)過(guo)周(zhou)期(qi)檢(jian)定(ding)後(hou),在(zai)有(you)效(xiao)期(qi)內(nei)就(jiu)是(shi)準(zhun)確(que)的(de),而(er)往(wang)往(wang)忽(hu)視(shi)了(le)校(xiao)準(zhun)的(de)重(zhong)要(yao)性(xing),甚(shen)至(zhi)於(yu)不(bu)進(jin)行(xing)校(xiao)準(zhun)。殊(shu)不(bu)知(zhi),電(dian)子(zi)天(tian)平(ping)在(zai)使(shi)用(yong)中(zhong)因(yin)環(huan)境(jing)條(tiao)件(jian)變(bian)化(hua)、人(ren)為(wei)等(deng)因(yin)素(su),計(ji)量(liang)性(xing)能(neng)時(shi)常(chang)會(hui)發(fa)生(sheng)細(xi)微(wei)的(de)變(bian)化(hua),這(zhe)就(jiu)需(xu)要(yao)我(wo)們(men)日(ri)常(chang)使(shi)用(yong)中(zhong)對(dui)其(qi)進(jin)行(xing)校(xiao)準(zhun)。那(na)麼(me),我(wo)們(men)該(gai)怎(zen)麼(me)樣(yang)進(jin)行(xing)校(xiao)準(zhun)呢(ne)?電(dian)子(zi)天(tian)平(ping)應(ying)在(zai)每(mei)天(tian)或(huo)每(mei)次(ci)使(shi)用(yong)前(qian)進(jin)行(xing)校(xiao)準(zhun),必(bi)要(yao)時(shi)可(ke)增(zeng)加(jia)校(xiao)準(zhun)的(de)頻(pin)次(ci)。校(xiao)準(zhun)用(yong)的(de)砝(fa)碼(ma),理(li)論(lun)上(shang)是(shi)等(deng)級(ji)越(yue)高(gao)越(yue)好(hao),一(yi)般(ban)應(ying)選(xuan)用(yong)砝(fa)碼(ma)誤(wu)差(cha)不(bu)大(da)於(yu)天(tian)平(ping)較(jiao)大(da)允(yun)許(xu)誤(wu)差(cha)的(de)1/3即可,且應定期送質監部門定檢,如發現誤差超過標準,要及時送質監部門檢測,以免造成損失。
手機版





