Yeyiphi impazamo evumelekileyo yokuchaneka kwesikali sokulinganisa?

Ukuhlelwa kwamanqanaba okuchaneka kwizikali zokulinganisa
Ukuhlelwa kwenqanaba lokuchaneka kwezikali zokulinganisa kumiselwa ngokusekelwe kwinqanaba lokuchaneka kwazo. E-China, inqanaba lokuchaneka kwezikali zokulinganisa ngokuqhelekileyo lihlukaniswe ngamanqanaba amabini: inqanaba lokuchaneka eliphakathi (inqanaba le-III) kunye nenqanaba eliqhelekileyo lokuchaneka (inqanaba le-IV). Oku kulandelayo lulwazi oluneenkcukacha malunga nokuhlelwa kwamanqanaba okuchaneka kwizikali zokuweyisha:
1. Inqanaba lokuchaneka eliphakathi (iNqanaba III): Eli lelona nqanaba liqhelekileyo lokuchaneka kwezikali. Kulo nqanaba, inombolo yokwahlula n yesikali sokulinganisa ngokuqhelekileyo phakathi kwe-2000 kunye ne-10000. Oku kuthetha ukuba ubunzima obuncinane obunokwahlula isikali sokulinganisa yi-1 / 2000 ukuya kwi-1 / 10000 yomthamo wayo ophezulu wokulinganisa. Umzekelo, isikali sokulinganisa esinomthamo omkhulu wobunzima beetoni ezili-100 sinokuba nesisombululo esincinci sobunzima beekhilogram ezingama-50 ukuya kwi-100 yeekhilogram.
2. Inqanaba lokuchaneka okuqhelekileyo (inqanaba le-IV): Eli nqanaba lokulinganisa umlinganiselo lidla ngokusetyenziselwa iinjongo zorhwebo kwaye alifuni ukuchaneka okuphezulu njengomgangatho wokuchaneka okuphakathi. Kulo nqanaba, inombolo yokwahlula n yesikali sokulinganisa ngokuqhelekileyo phakathi kwe-1000 kunye ne-2000. Oku kuthetha ukuba ubunzima obuncinane obunokwahlula isikali sokulinganisa yi-1 / 1000 ukuya kwi-1 / 2000 yomthamo wayo ophezulu wokulinganisa.
Ukuhlelwa kwamanqanaba okuchaneka kwizikali zokulinganisa kubalulekile ukuqinisekisa ukuchaneka kwazo kwiimeko ezahlukeneyo zesicelo. Xa ukhetha isikali sokulinganisa, abasebenzisi kufuneka bakhethe umgangatho ochanekileyo wokuchaneka ngokusekelwe kwiimfuno zabo zokwenyani.
Uluhlu oluvumelekileyo lwesizwe lwempazamo kwizikali zokulinganisa
Njengesixhobo esibalulekileyo sokulinganisa, ibhulorho yokulinganisa idlala indima ebalulekileyo kwimveliso yeshishini kunye norhwebo lwezorhwebo. Ukuze kuqinisekiswe ukuchaneka kweziphumo zokulinganisa, ilizwe liseke imimiselo ecacileyo malunga noluhlu lwempazamo oluvumelekileyo lwezikali zokulinganisa. Oku kulandelayo lulwazi olufanelekileyo kwimpazamo evumelekileyo yesikali esisekwe kwiziphumo zophendlo zamva nje.
Iimpazamo ezivumelekileyo ngokwemigaqo yemetroloji yesizwe
Ngokwemigaqo yesizwe ye-metrological, inqanaba lokuchaneka kwezikali zokulinganisa linqanaba lesithathu, kwaye impazamo esemgangathweni kufuneka ibe ngaphakathi ± 3 ‰, kuthathwa njengesiqhelo. Oku kuthetha ukuba ukuba ubukhulu bomthamo womlinganiselo wesikali sokuweyisha iitoni ezili-100, eyona mpazamo inkulu evumelekileyo kusetyenziso oluqhelekileyo yi-± 300 kilograms (okt ± 0.3%).
Iindlela zokuphatha iimpazamo zesikali
Xa usebenzisa isikali sokulinganisa, kunokubakho iimpazamo ezicwangcisiweyo, iimpazamo ezingalindelekanga, kunye neempazamo ezinzulu. Iphutha elicwangcisiweyo livela ikakhulu kwimpazamo yobunzima equlethwe kwisikali sokulinganisa ngokwaso, kwaye impazamo engacwangciswanga inokuba ngenxa yokwanda kwempazamo ebangelwa kukusebenza kwexesha elide. Iindlela zokusingatha ezi mpazamo ziquka ukuphelisa okanye ukubuyisela iimpazamo ezicwangcisiweyo, kunye nokunciphisa okanye ukuphelisa iimpazamo ezizenzekelayo ngokusebenzisa imilinganiselo emininzi kunye nokucubungula izibalo.
Amanqaku kwi
Xa usebenzisa isikali sokulinganisa, kubalulekile ukuphepha ukulayisha ngaphezulu ukukhusela umonakalo kwinzwa kunye nokuchaphazela ukuchaneka kokulinganisa. Ngexesha elifanayo, izinto akufanele ziphonswe ngokuthe ngqo emhlabeni okanye zithotywe ukusuka kwindawo ephakamileyo, njengoko oku kunokonakalisa i-sensors of the scales. Ukongezelela, umlinganiselo wokulinganisa akufanele ushukunyiswe ngokugqithiseleyo ngexesha lokusetyenziswa, ngaphandle koko kuya kuchaphazela ukuchaneka kwedatha yokulinganisa kwaye kunokuchaphazela ubomi bayo benkonzo.
Isishwankathelo, uluhlu lwempazamo oluvumelekileyo lwesikali somlinganiso lumiselwa ngokusekelwe kwimimiselo ye-metrological yesizwe kunye neenkcukacha zesikali sokulinganisa. Xa ukhetha kwaye usebenzisa isikali sokulinganisa, abasebenzisi kufuneka basivavanye ngokusekelwe kwiimfuno zabo kunye neemfuno zokuchaneka, kwaye banikele ingqalelo ekusebenzeni okuchanekileyo ukunciphisa iimpazamo.