Kev Nyab Xeeb Certification Standards thiab Safe Siv Digital Multimeters
Thaum koj pom cov cim xws li UL, CSA, TUV, thiab lwm yam los yog nyeem cov lus zoo li "Tsim kom tau raws li qhov yuav tsum tau ua ntawm ....," koj feem ntau xav txog cov koom haum kuaj thiab ntawv pov thawj. koj zoo li xav txog cov kev xeem ywj pheej thiab cov koom haum muaj ntawv pov thawj. Koj tuaj yeem ua pov thawj li cas tias koj lub tshuab ntsuas digital ua tau raws li CATIII lossis CATII (saib CATI, CATII lossis CATIII cov qauv thiab cov lus txhais)? Nws yog qhov ua tau heev uas cov chaw tsim khoom nws tus kheej xav tias nws lub ntsuas tau ntsib CATIII lossis CATII yam tsis muaj ntawv pov thawj ywj pheej. Lub International Electrotechnical Commission (IEC) tsuas yog tsim thiab pom zoo nws cov qauv, tab sis tsis muaj lub luag haujlwm rau kev tswj hwm lawv. Tsuas yog thaum cov khoom tau raug kuaj kom ua tau raws li cov qauv ntawm lub cev muaj ntawv pov thawj ywj pheej, xws li UL, CSA, TUV thiab lwm lub cev ntawv pov thawj tuaj yeem raug cim rau ntawm lub ntsuas, xws li UL3111, raws li IEC1010 tus qauv. Hauv kev lag luam sib xyaw ua lag luam, kev soj ntsuam ywj pheej thiab ntawv pov thawj tsis yog qhov zoo tshaj plaws, tab sis yuav yog txoj hauv kev ncaj qha tshaj plaws los txheeb xyuas.
Kev nyab xeeb ntawm kev siv digital multimeter pib nrog xaiv qhov zoo digital multimeter rau daim ntawv thov thiab ua kom tau raws li qhov chaw thov. Thaum koj tau xaiv txoj cai digital multimeter, koj yuav xav siv nws raws li nws daim ntawv thov ib txwm. Lub koom haum International Electrotechnical Association (IEEA) tau teeb tsa cov qauv tshiab rau kev ua haujlwm hauv cov tshuab hluav taws xob. Xyuas kom tseeb tias cov digital multimeter koj siv tau raws li IEC tus qauv thiab tias nws qhov ntsuas hluav taws xob ua tau raws li qhov yuav tsum tau ua rau daim ntawv thov teb. Piv txwv li, yog tias ntsuas lub zog hluav taws xob 480V, koj lub tshuab hluav taws xob digital yuav tsum tau ua raws li tus qauv CATIII / 600V, uas txhais tau hais tias cov khoom siv hluav taws xob ntawm lub ntsuas hluav taws xob no yog tsim los tiv thaiv cov kev hloov pauv hauv daim ntawv thov no yam tsis muaj kev puas tsuaj rau tus neeg siv. Xaiv ib lub multimeter digital sau npe UL, CSA, CDE, TUV txhais tau hais tias lub ntsuas ntsuas tsis yog ua tau raws li IEC cov qauv, tab sis kuj tau txais kev lees paub ntawm nws tus kheej thiab kuaj kom tau raws li lub koom haum kuaj kev ywj pheej tus kheej cov qauv.
