IiMultimeters ezigqwesileyo nkqu nabasebenza ngombane | Ukuthembeka kobuNgcali

Ukuba ngumbane wombane uyakuhlala uzifumana une-multimeter yakho. Nokuba ungawuphi na umsebenzi okhoyo, uya kuzifumana usebenzisa imultimeter ngalo lonke ixesha. Ngale nto, awuzukuxhomekeka ekucingeni. Uya kwazi ukuba kwenzeka ntoni kanye ngaphakathi kwisekethe.

Ukukhetha eyona multimeter ilungele oombane kunokujika kube yinto enzima njengoko abavelisi beshiya iiyantlukwano ezimbalwa kwezi ntsuku. Ukufundisisa kwethu okunzulu kwezixhobo ezibonakalayo kunye nesikhokelo sokuthenga ngokuqinisekileyo kuya kukunika umbono ocacileyo wento ekufuneka ujolise kuyo ekukhetheni iMultimeter ephezulu.

Imultimeter yezixhobo zombane zokuthenga isikhokelo

Oombane bayazazi izinto kunye nezinto. Thina, apha, siza kube sikhanyisa ukukhanya kulowo nalowo kubo ukwenza indlela yakho igude. Oku kuyakuvumela ukuba utshatise iimfuno zakho nento ekufuneka uyijongile.

Yakha umgangatho

Imultimeter kufuneka ibe ngqongqo ngokwaneleyo ukuze imelane nawo nawaphina amathontsi aphakathi kwezandla. Ii-multimeter ezikumgangatho ophezulu zinomzimba owothusayo okanye ityala elibakhusela kuwo nawaphi na amathontsi aphakathi. Isiciko somzimba sangaphandle sihlala siziindidi ezimbini - irabha kunye neplastiki.

Amatyala anezinto zerabha angaphezulu kwepremiyamu kodwa ayongeza kuhlahlo-lwabiwo mali. Kwelinye icala, iiplastikhi zitshiphu kodwa zixhaphake ngakumbi ukuqhekeka kwisiliphu sezandla.

Idilesi ye-Analog Vs

IiMultimeter ezigungqise intengiso kokubini kwi-Intanethi nakwi-intanethi zezedijithali. Umntu usenokuzibuza ukuba kutheni le ingeyiyo i-analog. Ewe, ii-analogs zibonisa utshintsho kwixabiso ngokucacileyo xa kutshintshwa inaliti. Kodwa kwihlabathi elichanekileyo ledigital yeyona nto ibaluleke ngakumbi ukuphatha iisekethe zombane. I-Digital Multimeter iya kukunika iziphumo ezichanekileyo.

Ukujikeleza ngokuzenzekelayo

Imultimeter eneempawu ezizenzekelayo ezinokumisela okanye ichaze uluhlu lokuchasana okumiselweyo okanye ombane okanye okwangoku ngaphandle kokuba umsebenzisi achaze nantoni na. Oku konga ixesha elininzi kubaphengululi abatsha kwisixhobo. IiMultimeter eziphezulu zombane kufuneka zibe nalo msebenzi.

Ukuzenzekelayo kulula kakhulu ngokungafaniyo nencwadana apho ufuna ukufaka uluhlu kwaye kufuneka ulungelelanise. Kodwa kwimeko yokuhamba ngokuzenzekelayo, kuthatha ixesha ukuba iMultimeter ivelise iziphumo.

Iziqinisekiso zokuphepha

Iimultimeter zihlala zineziqinisekiso zenqanaba le-CAT njengeempawu zokhuseleko. Kukho amanqanaba amane eziqinisekiso ze-CAT. Ezona zikhuselekileyo zii-CAT-III kunye ne-CAT IV.

Inqanaba le-CAT III libonisa ukuba i-multimeter inokusetyenziswa ngezixhobo eziqhagamshelene ngqo nomthombo. Ukuba usebenza nenye ye-CAT level IV ke ukowona ndawo ukhuselekileyo, njengoko unokuyisebenzisa ngqo kumthombo wamandla. Oku kufanele ukuba kube yimultimeter yogesi.

Itekhnoloji ye-RMS eyiyo

Kwi-AC okanye ngokuLinganayo imilinganiselo yangoku ayihlali rhoqo. Ukuba kuzotywe umzobo, iya kuba sine wave. Kodwa ngomatshini omninzi oxhunyiwe, kunqabile ukufumana amaza sine afanelekileyo ekhaya okanye kumzi mveliso. Kungenxa yoko le nto iMultimeter eqhelekileyo yombane inganiki amaxabiso achanekileyo.

Kulapho iteknoloji ye-RMS iza kuhlangula khona. Le teknoloji izama ukuhlengahlengisa amaza e-AC yangoku okanye i-voltages okt ivelisa amaza alinganayo alinganayo ukuze iMultimeter ikwazi ukuhambisa esona siphumo sichanekileyo.

ukuchaneka

Le yeyona nto iphambili kugesi abajolise kuyo ngelixa besebenza ngeesekethe. Isiphumo sichanekile ngokuchanekileyo, kokukhona kuya kusebenza ngokufanelekileyo isekethe. Khangela iTekhnoloji ye-RMS eyiyo ukuze ikunike amaxabiso aqinisekileyo. Isibalo sokubonisa sikwanceda ekuphumezeni ukuchaneka okukhulu kwiiMultimeters zogesi.

Amandla emilinganiselo

I-Voltage, ukumelana, okwangoku, amandla, isantya sokusebenza yinto eqhelekileyo ekufuneka yenziwe yiMultimeter. Ukuba nakho ukuvavanya ii-diode, ukuqhubeka kovavanyo kunye nobushushu kuya kukunika ithuba elihle ebaleni. Ayisiyonto intle ukuba nazo zonke ezi zinto kunokuba yinto eqhelekileyo kwaye nayo nangenxa yesizathu.

Bonisa

Ukubona kukukholelwa. Ke, umboniso kufuneka ube kumgangatho olungileyo kwaye ufunde ngokulula. Ngobungakanani obunesidima, umboniso kufuneka ubuncinci ube namanani amane. Apho amabini azakuba yinani elipheleleyo kwaye amabini aya kuba ngamaqhezu edesimali

Ukusebenza kwiimeko ezahlukeneyo zokukhanya kuba ngumqobo ngaphandle kokuba umboniso ubonakalisa ukukhanya kwakhona. Ngokukodwa ukuba uhlala usenza imilinganiselo kwindawo emnyama okanye emnyama, akukho ndlela unokuphoswa ngumboniso ongasemva.

Ubunzima kunye nobukhulu

Imultimeter sisixhobo ekufuneka silinganise iiparameter ezahlukeneyo zezixhobo ezahlukeneyo. Ukusetyenziswa kwentuthuzelo, imultimeter kufuneka kube lula ukuhamba nayo.

Ubunzima beemultimitha ezilungileyo buyahluka ukusuka kwi-4 ukuya kwi-14 yeeyunun. Ngokuqinisekileyo ezinkulu kakhulu kwaye zinzima kakhulu ziya kukucotha. Kodwa ezinye izinto ezinje nge-AC yokulinganisa izibopho zongeza kubunzima kwaye ungayidinga kakubi loo nto. Kwiimeko ezinjalo jolisa ngakumbi kwiimpawu kwaye unciphise ubunzima.

Resolution

Isisombululo sekota simele ukuba lingakanani ixabiso elichanekileyo elinokufunyanwa. Kwi-multimeter engaphantsi kwama-50, esona sisombululo sisezantsi sevolthi kufuneka sibe yi-200mV kunye nezantsi ngoku kune-100μA.

Iparameters ezingqinisisekayo

Imfuno esisiseko yemultimeter kukuba kufuneka ilinganise ubuncinci iiparameter ezintathu ezibandakanya imilinganiselo yangoku, ombane kunye nokumelana. Kodwa ayisiyiyo yonke into yokuba ulwe nolona khetho lufanelekileyo. Ukuqhubeka kokujonga yinto ekufuneka ubenayo kwaye kufuneka ixhaswe luhlu olulungileyo lwee-voltages kunye neendawo ezikhoyo.

Iimpawu ezongezelelekileyo ezinje ngemilinganiselo yokulinganisa kunye namandla okusebenza ziqhelekile. Kodwa ukuba yongeza kuhlahlo-lwabiwo mali kwaye awufunanga nyani, ke ukuphoswa kwabo ayisiyongxaki.

Ukugcina iNqaku

Kuhle ukuba nexabiso eligcinelwe ukusebenza kamva. Inqaku lokubamba idatha liyenza iqhinga koku kwaye ukuba wenza imilinganiselo emininzi ekhawulezayo. Ezinye iimultimeter ziza nenqaku eliphezulu lokubamba idatha lelinye ixabiso elipholileyo eliza kongezwa ngakumbi ukuba ukuthelekisa idatha kungumsebenzi wakho.

Ukuzimisela kwePolarity

Ubuninzi bubhekisa kwicala elifanelekileyo lokuseta. Iimultimeter ubukhulu becala zineenkqubo ezimbini zokuba neepolari ezahlukeneyo kwaye ngelixa umlinganiso wokungahambelani kakuhle kwiipolarities kungakhokelela ekuthabatheni ngaphambi kwexabiso elilinganisiweyo. Olu luphawu olulula kodwa olusisiseko kwaye kule mihla phantse akukho mitha intle ingenayo.

Ukulinganisa

Ngakumbi uluhlu lokulinganisa, iintlobo ezahlukeneyo zezixhobo zinokulinganiswa. Inani leevolthi kunye neendawo ezikhoyo zifunyenwe kwiimultimitha ezingenayo Ukuhamba ngokuzenzekelayo. Ukonyusa ithuba lokulinganisa uluhlu oluphezulu kuya kukhethwa. Kodwa kwakhona, nika itsheki kukufikeleleka kwakho kunye nemfuno.

Ukujikeleza ngokuzenzekelayo

Ukulinganisa kwenziwa kumanqanaba ahlukeneyo. Yiyo loo nto ukumelana noluhlu lweemultimeter zisebenzisa uluhlu lwamacandelo ekufuneka ehlengahlengiswe sisalathiso. Qaphela ukuba, ukulinganisa kuluhlu olusezantsi kuya kuyichaphazela impilo yesixhobo sakho.

Inqaku lokuzenzekelayo ngokuzenzekelayo linceda uhlengahlengiso ngokuzenzekelayo kuluhlu kwaye ligcine ixesha. Ewe iimitha ezingazenzisiyo zibiza ixabiso eliphantsi kodwa umahluko awubalulekanga xa kuthelekiswa nokulula kunye nokuguda okufumanayo.

Isibonelelo se-AC / DC

Kwiisekethe ezisebenzisa enye into ekhoyo, ukuthenga kuphela i-DC yokulinganisa imultimeter kuya kubalwa njengokubonelela ngesisa kumthengisi nakwezinye izinto. Imilinganiselo ye-AC yangoku ihlala icela ukusetyenziswa kweemitha ze-clamp kwaye inyuse ubunzima kunye nohlahlo-lwabiwo mali. Kodwa, kulungile ngokupheleleyo ukuba imilinganiselo ye-AC yile nto uyifunayo. I-DIYers kunye nabakhi beeprojekthi ezincinci abanokufuna imilinganiselo yangoku ye-AC.

Indawo yokuSebenza

Izinto zombane zisetyenziswa kuyo yonke indawo kubandakanya neendawo ezimnyama ezifana naphantsi komhlaba kunye namagumbi angaphantsi. Isikrini ngaphandle kokukhanya okwenziwe ngokwakho asizukusebenza kuba uya kukufumanisa kunzima ukufunda amaxabiso. Inqaku elibuyiselwe emva liyimfuneko ukujongana nengxaki.

Safety

Ukungabikho kwe-insulation efanelekileyo kwiiproses okanye iziqwengana ze-alligator kunokukufumana uswelekile ukuba usebenza ngentambo yombane. Fuse ezimbini kunye yokwambathisa ezimbini kunye nokukhuseleka omninzi kuzo zonke izigaba kufuneka zihlolwe ukusetyenziswa ekhuselekileyo. Kwakhona, kukhuseleko lokwehla kwesixhobo kunye nokukhuselwa kwekona kubalulekile kuba ufuna ukuba ihlale ihleli.

imposiso

Impazamo ibonisa ukuchaneka kwemitha. Ephakamileyo impazamo, ukunciphisa ukuchaneka. Akunakufane ufumane nawuphi na umenzi ochaza ipesenti yempazamo kwezi zingaphantsi kwama-50 eedimimitha. Thenga esona sibhetele ngumgaqo wobhontsi kule meko.

Isalathi sebhetri kunye nebhetri

Kuyacaphukisa kakhulu ukuba imitha ife ngelixa uphakathi kwento ethile. Kungenxa yoko le nto uya kubona iimitha ezininzi ngesibonisi esibonisa ngaphakathi okanye i-LED yangaphandle ebonisa intlawulo yebhetri.

Kwaye malunga nebhetri, zonke iimultimitha ezingaphantsi kwama-50 endikhe ndadibana nazo zisebenzisa ibhetri ye-9V enokutshintsha. Ezinye iimveliso zibonelela simahla ngemultimeter.

Ngelixa ilitha yebhetri yomsebenzisi wamandla kubalulekile njengoko igqiba ixesha lokuphila kwemultimeter. Enye imultimeter engaphantsi kwama-50 $ ibonelela ngesalathiso sebhetri ukuze isebenze ngaphandle koxinzelelo lwamandla aphuma kwangoko.

Ii-Multimeters ezigqwesileyo nkqu nombane ozisebenzisayo zihlaziyiwe

Size neeMultimeter ezibalaseleyo zombane osebenza kwimarike ukuba basebenze kunye. Zilungelelaniswe ngocwangco nazo zonke iimpawu kunye nokushiyeka abakunikelayo. Masifunde ke.

Fluke 117 Electricians True RMS Multimeter

Iimpawu zokuma

Njengengxenye yoluhlu lwe-Fluke 110, imodeli ye-117 inekhwalithi enkulu yokwakha ukuze iphile phantsi kweemeko ezinzima. Ukwakhiwa kwezona zixhobo zibalaseleyo kukothuka okumelana namaconsi aqhelekileyo. Uyilo lwe-ergonomic lunika wonke umntu ukuqonda okuhle kwaye ulingane kakuhle ezandleni zakho. Oku kwenza ukuba ukusebenza kwesixhobo kube lula.

Le Multimeter ingasindi inombane ongafumaneki kumbane ombane okhuseleyo onokuthembela kuwo. Inqaku lokubamba ngokuzenzekelayo likuvumela ukuba ugcine iziphumo ngelixa usenza uqwalaselo lwakho olulandelayo. Njengombane wombane ungafuna ezona ziphumo zichanekileyo onokuzifumana, iNqaku le-RMS eyiyo yeFluke ikunika olo ncedo.

Isisombululo esiphakamileyo sokubonisa ukukhanya kwe-LED sikuvumela ukuba uthathe ukufundwa ngaphandle koxinzelelo kwiso nakwimeko yokusebenza emnyama. Igalelo elisezantsi lokuthintela kuthintela ukungavumeli naluphi na uhlobo lokufunda okungachananga. Iyunithi inenqanaba leCAT III lokhuseleko.

Ayisiyiyo kuphela imibane esisiseko yombane kodwa kunye necandelo lokukhanya kunye negcisa le-HVAC banokusebenzisa lo matshini ukwenza umsebenzi wabo. Unokufumana ukufundwa okuphakathi komndilili wangoku, ombane, amandla kunye nexabiso lamaxesha ngokuchaneka okukhulu. Ungayichazanga eyokuza newaranti yeminyaka emi-3 eyenza ukuba ithembeke.

Imilenze

Unengxaki yokulinganisa okwangoku kumaxabiso asezantsi anje ngee-microamps okanye ii-milliamps. Umboniso uphulukana nokwahluka kwii-engile ezithile. Kananjalo ayinalo ukhuseleko lweCAT IV.

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Amprobe AM-570 Industrial Digital Multimeter ene-True-RMS

Iimpawu zokuma

I-Amprobe AM-570 sisixhobo esihle kakhulu esijikeleze umgangatho kunye nomgangatho owomeleleyo wokwakha. Ingalinganisa umbane we-AC / DC ukuya kuthi ga kwi-1000V kunye ne-capacitance, frequency, ukumelana kunye nobushushu. Umsebenzi ophindwe kabini we-Thermocouple uyivumela ukuba ithathe ubushushu ekufundeni kweenkqubo ze-HVAC.

Umsebenzi wokufumanisa umbane ongafumaneki uqaliswe ngu-Amprobe njengenxalenye yokhuseleko. Iifilitha zokupasa eziphantsi zikwakhona ukuvimba nasiphi na isantya sevolthi ye-AC engaphezulu kwe-1kHz. Imowudi ye-impedance esezantsi ikuvumela ukuba ubone i-ghost voltages kwaye uyigxothe.

Isikrini esingasemva sibonisa ukuya kwi-6000-count. Kukho imo yokubonisa emibini apho abasebenzisi banokuthelekisa iziphumo zangaphambili kunye nexabiso labo langoku. Imowudi yeMax / Min ikunika amaxabiso aphezulu naphantsi, oku kuyasebenza nakubushushu ngokunjalo.

IMultimeter inenqanaba lokhuseleko leCAT-IV / CAT-III. Ngeempawu ze-RMS eziyinyani, isixhobo sinika iziphumo ngokuchaneka okukhulu. Inayo isibane se-LED nayo. Esi sisixhobo esifanelekileyo ukugcina inkampani yakho nakweyiphi na indlu okanye indawo yokukhanya ekhanyayo apho ungasebenza khona kwimisebenzi eyahlukeneyo ngesixhobo esinye kuphela.

Imilenze

Inqaku lokungafumaneki kwamandla ombane lilungile ukuba linalo kodwa liphakathi kwe-8mm kuphela, engaphantsi kakhulu kunoko imitha uqinisa ibonelela. Ukuzenzekelayo kuyajongwa ukuba kusebenze kancinci. Ukukhanya kwangasemva ngamanye amaxesha kuyehla.

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Izixhobo zeKlein zoVavanyo loMbane kunye neMultimeter

Iimpawu zokuma

Klein, ungomnye wabenzi abaphambili bokulinganisa izixhobo, ungaze ulalanise nomgangatho kunye neempawu. Kwiimitha ezininzi ezikhankanyiweyo, bongeze iqela lezinto ezinokuba yeyona nto ibalulekileyo kubo nabaphi na oombane. Okokuqala, le mitha iyakwazi ukulinganisa naluphi na uhlobo lwangoku kunye nee-voltages ezinje nge-AC okanye i-DC voltages, DC yangoku, kunye nokumelana.

Into yokuqala eza kufika engqondweni yakho kukhuseleko lwesixhobo ngelixa usisebenzisa. I-Klein iqinisekisa ukhuseleko nge-CAT III 600V, i-Class 2 kunye nokukhuselwa okuphindwe kabini kokuthetha ukuba konke kukhuselekile nokuba ujongana nezantsi okanye ngaphezulu.

Elona candelo liluhlaza yi-LED eqaqambileyo eluhlaza, ibonisa ukuba i-multimeter iyasebenza okanye ayisebenzi. Le LED ijika ibe RED xa imitha ifumana nayiphi na imithamo. ivelisa isandi ukuze ukufumanisa kube lula kakhulu.

Isebenzisa ibhetri enamandla, ukwandisa ubomi bebhetri kukho isixhobo sokucima umbane esizicimayo isixhobo xa ungasebenzi nemultimeter. iqhosha elilawulwa ngokwamanani ON / OFF linika ulawulo ngakumbi kwisixhobo.

Ezinye zezinto ezinokukhankanywa zezi njengocingo tester ukujonga ukuba ngaba nayiphi na i-wiring ilungile okanye ayilunganga, ichonga unxibelelwano lomhlaba ovulekileyo okanye uqhagamshelo oluvulekileyo olungathathi cala. Iya kwenza ket ukwazi malunga neemeko ezivulekileyo ezishushu kunye nokutshisa okanye ukubuyela umva komhlaba xa kufuneka njalo.

 Imilenze

Into embi kukuba awuyi kufumana nawuphi na umyalelo ocacileyo okanye ofanelekileyo kubavelisi malunga nokusebenza kwemitha ngokufanelekileyo. Izikhokelo ziphantsi kwaye ngamanye amaxesha zaziza neziphene.

Akukho mveliso ifunyenweyo

I-BTMETER BT-39C Yenyani ye-RMS yeDijithali yeMultimitha yeAmp yoMbane

Iimpawu zokuma

I-BTMETER inoluhlu olubanzi lwezicelo kwicandelo lombane labachwephesha. Imitha inokulinganisa ngokuchanekileyo i-voltage ye-DC kuluhlu lwe-6000mV ukuya kwi-600V, i-AC voltage ukuya kuthi ga kwi-6000V, amandla e-9.999nF ukuya kwi-99.99mF, ukuxhathisa, umjikelo womsebenzi kunye nobushushu. Uvavanyo lokuqhubeka lunokwenziwa kusetyenziswa isixhobo.

Umboniso unendawo yokulawula ukukhanya okuya kuthi kulungelelanise ukukhanya komboniso ngokwemeko yendalo ngokuzenzekelayo. Iqondo lobushushu langoku linokufumaneka ngokucinezela iqhosha. Ukuvala ngokuzenzekelayo indawo kugcina amandla ebhetri xa uthe walibala ukuyicima.

Inqaku leZeroing laziswe apha ngelixa usebenza nenqaku lokufunda elincinci lokufunda kuya kukunika iziphumo ezichanekileyo. Ukukhuselwa okugcweleyo ngoku kubakho kwiimeko ezigcwele kakhulu. Ungabamba idatha yeziphumo zangaphambili ukuyithelekisa nale ikhoyo.

Itekhnoloji ye-RMS yokwenyani inika imitha inqanaba elikhulu lokuchaneka. Imagnethi eqhotyoshelweyo ngasemva ivumela umsebenzisi ukuba ayixhome kwimiphezulu yesinyithi. Le Multimeter iphuhlisiwe ngakumbi kusetyenziso lwasekhaya, isikolo kunye nokusetyenziswa kwinqanaba lomzi mveliso.

Imilenze

Kwimowudi yokulungelelanisa ngokuzenzekelayo, isixhobo kubonakala ngathi sisebenza kancinci. Umgcini wecala lokuphanda ubonakala ngathi uphazamisekile, kodwa loo nto iyahluka kubantu ngabantu.

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AbaSebenzi boMbane be-Bside Digital Multimeter 3-Umgca wokubonisa iSkrini esikhulu se-RMS 8000

Iimpawu zokuma

Ngaphandle kwedijithali yeMultimeter inesikrini esiphakamileyo esikuvumela ukuba ubone iziphumo zovavanyo kwimigca emithathu eyahlukeneyo. Uyakubona ukunganyangeki, amaza ombane kunye nobushushu ngexesha elinye kwizikhundla ezi-3 ezahlukeneyo. Ikwanayo nokuma kwe-EBTN kwimvelaphi ephuculweyo yemiboniso yeLCD ephatha amehlo akho ngokungacaphukiswa okumbalwa.

Isixhobo sinokulinganisa umbane we-AC / DC, okwangoku, ukuxhathisa, amandla, uvavanyo lweDiode, iNCV kunye nomjikelo womsebenzi kuluhlu olubanzi lokulinganisa. Olunye lweempawu zokuma kulo matshini ngumsebenzi weVFC onako ukulinganisa amandla ombane wee-inverters. Itekhnoloji ye-RMS yokwenyani iqinisekisa ngokuchaneka okuphezulu ngawo onke amaxabiso afezekisiweyo.

Idatha inokubanjelwa olunye uhlalutyo ngexabiso langoku elifunyenweyo. Inesalathiso sebhetri esezantsi ukuze uyibuyisele xa kuyimfuneko. Unokufumana ukubetha ukuya kuthi ga kwi-5MHz usebenzisa iijeneretha zesikwere. Uyilo lwesibini lwesiphatho somnini ngasemva sikunika ithuba.

Imilenze

Incwadana yemiyalelo ibonakala ngathi ayinalo ulwazi malunga nayo yonke iyunithi. Kuye kwabonwa ngabanye abasebenzisi ukuba ngaphandle kokusetyenziswa rhoqo kweso sixhobo, kusebenza kakubi ngamanye amaxesha.

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I-multimeter engcono kakhulu phantsi kwe-50: INNOVA 3320 Auto-Ranging Digital Multimeter

eziluncedo

Ngemilinganiselo emincinci enokulingana ngesandla kunye nee-ounces eziyi-8 ngokobunzima, i-multimeter ilungile ukuhamba-hamba nayo. Ukhuselo lwedrophu lubonelelwa ngoonogada beekona zerabha kunye ne-impedance ephezulu ye-10 Mohm ekhuselekileyo kuzo zombini iinjongo zombane nezeemoto. Imultimeter inokulinganisa amandla ombane, ombane, ukuxhathisa kunye nokunye malunga ne-AC kunye ne-DC yangoku.

Ukuba yimultimeter engaphantsi kwama-50 eedola, le mveliso iza nezinto ezikhethekileyo ezinje ngokujikeleza ngokuzenzekelayo. Ukuba ungumqali okanye unzima ukulungelelanisa uluhlu ngesandla, le mveliso inokuba luncedo kuwe. Enye inkonzo ebonelelwa yile multimeter yinkqubo ezenzekelayo ecima ngokuzenzekelayo emva kokushiywa ingasetyenziswanga ngamanye amaxesha.

Isixhobo siqhutywa ziibhetri zeAAA kunye nenqaku lesalathiso esibomvu se-LED esibonisa ngokulula imeko yebhetri. Njengomkhiqizo wangaphambili, uza kunye nesihlakala kwaye umi umtya ovumela ukusebenza ngaphandle kwezandla. Kwakhona imveliso iqinisekisiwe ikhuselekile yi-UL. Ke, ukusetyenziswa okukhuselekileyo kuqinisekisiwe.

Iziphene

Isibonisi sebhetri ngamanye amaxesha siyasilela ukubonelela ngemeko efanelekileyo yebhetri. Uluhlu oluncinci lwe-200mA lube yingxaki kubasebenzisi abaninzi njengoko amaxesha ongezantsi ngamanye amaxesha efunekayo ukulinganiswa. Kananjalo, akukho bonakaliso lubonisa ukuba lunika ixabiso elingalunganga kunxibelelwano olungalunganga.

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Eyona multimeter yohlahlo lwabiwo-mali: I-AstroAI Digital Multimeter ene-Ohm Volt Amp

eziluncedo

Ukuba nomlinganiso omncinci wepokotho kunye nobunzima bee-ounces ezi-4 kuphela kule multimeter kunokukunika lula. Iipropathi zoKhuseleko ezinjengoonogada beekona zerabha kunye nefyuzi eyakhelweyo kulo lonke uluhlu olukhuselekileyo lwemihla ngemihla ukujonga ukusetyenziswa kombane. Iinkonzo ezibonelelweyo zibandakanya ukulinganisa amandla ombane we-AC DC, ukuqhubeka, ii-diode, kunye nezinye ezinokuthi zigubungele zonke iimfuno zakho zemihla ngemihla.

Ukugquma konke esi sixhobo siza nezinto ezinje ngokubamba idatha eza kuluncedo xa usenza imilinganiselo ngokukhawuleza. Kwakhona, inesalathiso sebhetri esezantsi ekuvumela ukuba wazi xa ufuna ukutshintsha iibhetri. Isibane esikhanyisiweyo esikhanyisiweyo songezwa kumboniso wentuthuzelo ekusetyenzisweni phantsi kweemeko ezimnyama.

Kwimithambo ephantsi, isixhobo sinika isisombululo esikhulu. Imultimeter nayo iza nokuma ngaphambili okuma ngasemva okuvumela abasebenzisi ukuba basebenze ngaphandle kwezandla. Ixhaswe yibhetri ye-9V 6F22, i-multimeter inobomi obuhle bokusebenza. Ukuba yimultimeter engaphantsi kwama-50, zonke ezo zinto ziyenza le mveliso ibe sisikhweli siphezulu.

Iziphene

Kwimibandela ephezulu, le mveliso inemicimbi ethile ekusombululeni. Ukuma okushiyekileyo akunakulinganisa i-AC yangoku. Izikhalazo zikhona ukuba umgangatho wokwakha wale mveliso ungabizi. Ukusetyenziswa kwexesha elide kunokuba kungafumaneki ngokokusebenza kwesi sixhobo.

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Etekcity Auto-Ranging Clamp Meter, Digital Multimeter eneAmp, Volt, Ohm, Diode

eziluncedo

Ubungakanani obunesidima ngokugquma kabini kunye nokukhuseleka ngaphezulu kwamandla ombane, imultimeter ikhutshwa ikhuselekile ekusebenziseni iinjongo zekhaya. Ngapha koko, yenye ezona zikumgangatho ophezulu zeemoto ezininzi. Imilinganiselo yombane we-AC / DC, i-AC yangoku, ukuxhathisa kunye ne-diode kunye nokuqhubeka kunokwenzeka ngesi sixhobo.

Njengangaphambili, le multimeter ine-auto-ranging egcina ixesha lokutshintsha uluhlu lwemilinganiselo eyahlukeneyo. Inqaku elikhethekileyo eliza nalo kukuvulwa kwemihlathi okunokulingana ukuya kwi-28-millimeter conductor. Eli nqaku linceda ukulinganisa ngokukhuselekileyo ngaphandle kokutshintsha isekethe yesiseko. Kwakhona, le multimeter ineenkcukacha zokubamba kunye nexabiso lenkonzo yexabiso lokuthuthuzela kwimilinganiselo.

Ukubaleka nge-2 AAA ibhetri, le multimeter inika ubomi be-150h, ende inde. Inkqubo yokuzenzekelayo yenziwe ukuba isebenze kwimizuzu engama-15 ukugcina ibhetri. Ukuboniswa kwesixhobo kuhle kakhulu ekufundeni idatha ngokulula. Isantya seesampulu zale fowuni siphezulu kakhulu esiziisampulu ezi-3 ngomzuzwana.

Iziphene

Ayilunganga kwindawo yokukhanya ephantsi yokusebenza njengoko kungekho nto ibuyiselweyo. Ayilinganisi i-DC yangoku ebuyela umva enkulu. Abanye abasebenzisi bafumene imiba ngomgangatho wokwakha wale multimeter. Ubunzima obuphezulu bee-ounces ezingama-13.6 le multimeter inzima kancinci kunabanye.

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Neoteck Auto-Ranging Digital Multimeter AC/DC Voltage yangoku iOhm Capacitance

eziluncedo

Ubungakanani obunesidima kunye nobunzima bee-ounces ezi-6.6 kuphela kule multimeter kulungile xa uthwala. Ukhuselo lwedrophu lubonelelwa ngesiciko seplastiki esithambileyo esingatyibilikisiyo esikhusela umzimba wonke. Ukongeza kuloo nto, ukhuseleko lokugquma kabini lubonelelwe ngokhuseleko kukothuka. Uninzi lweendlela zokulinganisa zinokwenziwa kule multimeter njenge-AC / DC yangoku, i-voltage, ukumelana, amandla kunye nokuhamba rhoqo.

Njengabanye abakhankanywe apha ngasentla, ukuzenzekelayo kuyafumaneka kwesi sixhobo. Kule multimeter iphantsi kwama-50 eedola, ibuzzer yongezwa kuvavanyo lokuqhubeka kovavanyo olulula. Kwakhona, ukubamba idatha kunye nokukhetha ixabiso lokugcina kuyafumaneka nayo. Ukusetyenziswa okungenazandla kubonelelwa kukuma okwakhelweyo. Kunye nezo, ukufunyanwa kwe-auto polarity kuyanceda ukuba usebenze ngaphandle kokucinga ngokujikeleza unxibelelwano.

Ngaphandle kwebhetri ye-9V ifakiwe, i-multimeter ihlala ifile. Umboniso unesici esibuyiselwe emva kokusebenza kwiindawo eziphantsi zokukhanya. Isisombululo kunye noluhlu lwale multimeter uninzi kunezinye ezichazwe apha ngasentla. Isalathiso sebhetri esezantsi siyongezwa esiza kucima ukungabikho kwebhetri ngelixa usebenza.

Iziphene

Imilinganiselo eyahlukeneyo izisa iimpazamo ezahlukeneyo. Ke, ezinye izinto zinokuba neziphene. Ngamanye amaxesha, ukufundwa akuhambelani. Inemicimbi nomgangatho wokwakha.

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FAQ

Nayi eminye imibuzo ebuzwa rhoqo kunye neempendulo zayo.

Yeyiphi eyona multimeter ilula ukuyisebenzisa?

Ukukhetha kwethu okuphezulu, i-Fluke 115 Compact True-RMS Digital Multimeter, inempawu zemodeli, kodwa kulula ukuyisebenzisa, nkqu nakwabaqalayo. Imultimeter sisixhobo esiphambili sokujonga xa into yombane ingasebenzi kakuhle. Ilinganisa amandla ombane, ukuxhathisa, okanye okwangoku kwiisekethi zentambo.

Ndiza kuchitha malini kwimultimeter?

Inyathelo 2: Ufanele uchithe malini kwimultimeter? Ingcebiso yam kukuchitha naphi na malunga ne- $ 40 ~ $ 50 okanye ukuba unganakho uku- $ 80 ungaphezulu koko. … Ngoku ezinye zeMultimeter zibiza ixabiso eliphantsi njenge- $ 2 onokuyifumana kwiAmazon.

Usebenzisa njani imultimeter ebiza ixabiso eliphantsi?

Ngaba ii-multimeters ezingabizi kakhulu zilungile?

Iimitha ezingabizi ngokuqinisekileyo zilungile ngokwaneleyo, nangona ufumana oko ukuhlawulayo, njengoko unokulindela. Logama nje unemitha evulekileyo, unokuyiqhekeza ukuze ube neWiFi. Okanye, ukuba ukhetha, uthotho lwezibuko.

Yeyiphi eyona multimeter ilula ukuyisebenzisa?

Ukukhetha kwethu okuphezulu, i-Fluke 115 Compact True-RMS Digital Multimeter, inempawu zemodeli, kodwa kulula ukuyisebenzisa, nkqu nakwabaqalayo. Imultimeter sisixhobo esiphambili sokujonga xa into yombane ingasebenzi kakuhle. Ilinganisa amandla ombane, ukuxhathisa, okanye okwangoku kwiisekethi zentambo.

Ngaba ndifuna imultimeter ye-RMS yokwenyani?

Ukuba ufuna ukulinganisa amandla ombane okanye okwangoku kweempawu ze-AC ezingengawo amaza e-sine amsulwa, njengaxa ulinganisa ukukhutshwa kolawulo lwezithuthi ezihamba ngesantya okanye uhlengahlengiso lolawulo lokufudumeza, emva koko ufuna imitha “eyiyo ye-RMS”.

Ngaba ii-Fluke multimeter zixabisa imali?

I-multimeter yegama legama lifanelekile ngokupheleleyo. Iimolimeter ezininzi zezinye zezona zithembekileyo phaya. Baphendula ngokukhawuleza kune-DMM ezininzi ezingabizi kakhulu, kwaye uninzi lwazo zine-analog bar-graph ezama ukubhula igrafu phakathi kwe-analog kunye neemitha zedijithali, kwaye ingcono kunokufundwa kwedijithali ecocekileyo.

Nguwuphi umahluko phakathi kweFluke 115 kunye ne-117?

I-Fluke 115 kunye ne-Fluke 117 zozibini ziyinyani-RMS iMultimeter enobubanzi obukhulu be-3-1 / 2 enamanani ayi-6,000. Iinkcukacha eziphambili zezi mitha ziphantse zafana. … I-Fluke 115 ayibandakanyi nanye kwezi mpawu - lo ngumahluko wokwenene phakathi kweemitha ezimbini.

Ngaba ndifanele ndithenge imitha ye-clamp okanye i-multimeter?

Ukuba ufuna nje ukulinganisa okwangoku, imitha yokulinganisa ilungile, kodwa kweminye imilinganiselo efana ne-voltage, ukuchasana, kunye ne-frequency i-multimeter ikhethwa ngesisombululo esingcono kunye nokuchaneka. Ukuba umalunga nokhuseleko, imitha yokulinganisa inokuba sesona sixhobo silungileyo kuwe njengoko ikhuselekile kune-multimeter.

Yeyiphi i-analog engcono okanye i-multimeter yedijithali?

Kuba ii-multimeter zedijithali zichanekile ngokubanzi kunabalinganiswa be-analogue, oku kukhokelele ekuthandeni ukunyuka kwee-multimeter zedijithali, ngelixa imfuno ye-analogue multimeter iye yehla. Kwelinye icala, ii-multimeter zedijithali zihlala zibiza kakhulu kunabahlobo babo be-analogue.

Ithetha ukuthini i-TRMS 6000 counts?

Izibalo: Isisombululo se-multimeter yedijithali sikwacacisiwe kubalo. Amanani aphezulu anika isisombululo esingcono semilinganiselo ethile. … I-Fluke inikezela ngee-3½ ezinemivo yesimemitha yedijithali ngokubala ukuya kuthi ga kuma-6000 (okuthetha ukuba ubuninzi be-5999 kwisibonisi semitha) kunye neemitha ezinamanani ama-4½ ngamanani angama-20000 okanye ama-50000.

Yintoni i-RMS yokwenene yemitha?

I-RMS yokwenyani ephendula ii-multimeter zilinganisa amandla okufudumeza ombane osetyenzisiweyo. Ngokungafaniyo nomlinganiso "wokuphendula ophakathi", imilinganiselo yokwenyani ye-RMS isetyenziselwa ukumisela amandla achithwe kwisichasi. … Kuphela "lixabiso lokufudumeza" lezinto ze-ac zendlela yokufaka igalelo elilinganisiweyo (i-dc iyaliwa).

Ithetha ntoni i-RMS yokwenene kwimultimeter?

Ingcambu yokwenyani Ithetha isikwere
Nge-27 kaFebruwari, 2019. I-RMS imele ingcambu eyi-Root Mean Square kunye ne-TRMS (True RMS) ye-True Root Mean Square. Izixhobo ze-TRMS zichanekile ngakumbi kune-RMS xa kulinganiswa i-AC yangoku. Kungenxa yoko le nto zonke ii-multimeter kwikhathalogu ye-PROMAX zinamandla okulinganisa i-RMS eyiyo.

Ngaba iKlein yimultimeter elungileyo?

I-Klein yenza ezinye ze-DMM eziqinileyo, ezona zihamba phambili (ii-multimeter zedijithali) ngeenxa zonke kwaye ziyafumaneka ngeqhezu lexabiso lamanye amagama amakhulu. … Ngokubanzi, xa usiya neKlein ungalindela ubungakanani obuphezulu, ii-multimeter ezingabizi kakhulu ezingafakwanga kukhuseleko okanye kwiimpawu.

Ndivavanya njani ukuba i-multimeter yam iyasebenza?

Jika ukucofa kwi-multimeter yakho ukuze usete umlinganiso wombane kunokuxhathisa. Beka ubomvu obomvu ngokubhekisele kwisiphelo esifanelekileyo sebhetri. Chukumisa iprobe emnyama kwisiphelo esibi. Qinisekisa ukuba i-multimeter ibonelela ngokufundwa kwe-9V okanye kufutshane kakhulu nayo.

Luthini uvavanyo lokuqhubeka?

Iimpendulo: Nanini na xa kukho umendo opheleleyo wokuhamba ngoku, le meko ibizwa ngokuba luvavanyo lokuqhubeka kweesekethe. Kule mihla ii-multimeter zedijithali zinokuvavanya ngokulula ukuqhubeka kwesekethe. Iifusi okanye iitshintshi okanye uqhagamshelo lombane luyaqhubeka kuzo. Ngokwesiqhelo, ibhiphu evakalayo evela kwiMultimeter ibonisa ukuqhubeka kwesekethe.

Ayizizo zonke iiMultimeter ezinokwenza uvavanyo lokuqhubeka.

Kwenziwa kanjani jonga ukuba ngaba multimeter usebenza ngokuchanekileyo?

Iimpendulo: Kukho iindlela ezininzi. Ekuqaleni, ungayivavanya i-multimeter yakho ngokuyimisa koxinzelelo olusezantsi emva koko kuya kufuneka wenze ubomvu kunye nobumnyama kumdibaniso. Kuya kufuneka ifundwe ngu- "0", emva koko isebenze kakuhle.

Unokufumana ukunganyangeki kwesixhathisi esaziwayo. Ukuba iMultimeter ibonakalise ixabiso kufutshane kakhulu nelona lilo, liyasebenza.

Ingaba isibalo 'sokubala' somboniso sibhekisa phi?

Iimpendulo: Ngokubanzi, kunokuthiwa ukuphakama kwenani lokubala lixabiso elichanekileyo ngakumbi eliza kubonisa iMultimeter.

isiphelo

Abavelisi abanikanga naliphi na igumbi lokuba abasebenzisi benze isigqibo ngeyona multimeter ilungileyo yombane.Bongeze izinto ezininzi ezikhethekileyo nezibalulekileyo kwaye bahlala besebenza imini nobusuku kwiR & D ukuphucula ukusebenza kwezixhobo. Silapha ukunceda wenze ingqondo yakho ngezimvo zethu zobungcali.

Ukuba ngenene kufuneka sikhethe enye kula maqashiso, i-Fluke 117 iya kuba lukhetho olufanelekileyo. Ngokwakhiwa okumangalisayo, usetyenziso olwahlukeneyo kunye newaranti yeminyaka emi-3 ngokuqinisekileyo ihanjiswa ngeyona nto ibalaseleyo koluhlahlo-lwabiwo mali. I-Amprobe kunye ne-BTMETER ilungile emva komkhuhlane kunye neempawu ezifanayo kunye nokuthembeka kukunika olwaneliseko lokugqibela.

Ukusetyenziswa okukhethekileyo njengomlinganiselo wayo nayiphi na indawo yoqhagamshelo lwe-Etekcity Auto-Ranging Imitha yokuClamp, I-Digital Multimeter ene-Amp, Volt, Ohm, i-Diode yimveliso omele uyijonge. Kwakhona, ukuba umthamo wokulinganisa ubalulekile kuwe kunokuba ungajongi ngaphezu kweNeoteck Auto-Ranging Digital Multimeter AC/DC Voltage yangoku yeOhm Capacitance.

Yonke iMultimeter eboniswe apha ngasentla inomahluko ophakathi kwabo. Ke ekugqibeleni kuyehla kuwe ukwenza ukhetho. Eyona nto ibalulekileyo ekufuneka unike yona luhlobo lomsebenzi oza kuwenza kunye neempawu eziza kuba luncedo kuwe. Ukuhlalutya iimfuno zakho sisitshixo sokukhetha iMultimeter ephezulu yogesi.

NdinguJoost Nusselder, umseki weZixhobo zeGqirha, umthengisi womxholo, kunye notata. Ndiyathanda ukuzama izixhobo ezitsha, kwaye kunye neqela lam ndiye ndenza amanqaku ebhlog anzulu ukusukela ngo-2016 ukunceda abafundi abathembekileyo ngezixhobo kunye neengcebiso zokwenza.