Dabaru na Aunawa Ta Amfani da Multimeter
Multimeter kayan aiki ne mai amfani da yawa wanda yake da mahimmanci a duniyar wutar lantarki da na'urorin lantarki. Da na'ura ɗaya, za mu iya auna ƙarfin lantarki, wutar lantarki, juriya, da wasu sigogi da yawa kamar ci gaba, diode, capacitance, mita, har ma da zafin jiki (ya danganta da nau'in multimeter). Saboda yawan ayyukansa, ikon amfani da multimeter tare da dabarar da ta dace ƙwarewa ce ta asali ga ɗalibai, masu fasaha, da masu sha'awar kayan lantarki. Wannan labarin ya tattauna dabarun aunawa masu amfani ta amfani da multimeter, daga shiri da zaɓar hanyoyin zuwa nasihu na aminci da kurakurai da aka saba yi don gujewa.
1. Fahimtar Nau'ikan Multimeter: Analog da Digital
Gabaɗaya, an raba multimeters zuwa nau'i biyu: analog multimeters da dijital multimeters (DMMs). Ana amfani da analog multimeters da pointer da sikelin, yayin da dijital multimeters ke nuna ƙimar a lambobi akan allo. A halin yanzu, ana amfani da multimeters na dijital sosai saboda sauƙin karatu, daidaito mafi girma, da kuma cikakkun fasaloli. Duk da haka, analog multimeters har yanzu suna da amfani don lura da canje-canje masu sauri a cikin ƙima (kamar canjin sigina), saboda allurar tana motsawa akai-akai.
2. Muhimman Sassan Na'urar Multimeter
Kafin ɗaukar ma'auni, da farko ku fahimci sassan multimeter:
– Allo (nuni): yana nuna sakamakon aunawa (akan na'urar multimeter ta dijital).
– Mai zaɓe (maɓallin juyawa): don zaɓar nau'in aunawa (V, A, Ω, ci gaba, diode, da sauransu) da kewayon aunawa.
– Tashar bincike/jack: inda aka haɗa kebul ɗin bincike. Gabaɗaya ya ƙunshi:
– COM (na gama gari/mara kyau): don binciken baƙi.
– VΩmA: don auna ƙarfin lantarki, juriya, diodes, ci gaba, da ƙananan kwararar ruwa (mA).
– 10A ko 20A: musamman ga manyan kwararar ruwa (ya danganta da nau'in multimeter).
– Kebul na bincike/aunawa: yawanci ja (mai kyau) da baƙi (mara kyau). Dabaru na riƙewa da taɓa na'urar bincike yana da matuƙar tasiri ga aminci da daidaito.
3. Ka'idojin Aunawa na Aunawa: Jeri da Layi ɗaya
Ɗaya daga cikin mabuɗin amfani da multimeter shine fahimtar yadda ake haɗa shi kayan aikin aunawa:
– Ana yin auna ƙarfin lantarki (V) a layi ɗaya da tushen kaya ko ƙarfin lantarki.
– Ana yin auna wutar lantarki (A) a jere tare da da'irar (multimeter ya zama wani ɓangare na hanyar da ake bi a yanzu).
– Ana yin auna juriya (Ω) akan abubuwan da ba su da kuzari (ya kamata a kashe da'irar kuma a cire bangaren da ya dace daga da'irar don guje wa hanyoyin layi daya da ke shafar sakamakon).
Kuskuren da aka fi sani shine auna wutar lantarki amma multimeter ɗin an haɗa shi a layi ɗaya, saboda yana iya sa fiyutar multimeter ta hura ko ma ta lalata kayan aikin.
4. Dabaru don auna ƙarfin wutar lantarki na DC (V⎓)
Ana samun ƙarfin wutar lantarki na DC (kai tsaye) a cikin batura, adaftar DC, bankunan wutar lantarki, da kuma da'irori na lantarki. Matakan sune:
1. Haɗa na'urorin bincike: baƙi zuwa COM, ja zuwa tashar VΩ.
2. Zaɓi yanayin DCV (V tare da layi madaidaiciya/mai lanƙwasa).
3. Idan na'urar multimeter ba ta yin amfani da wutar lantarki ta atomatik ba, zaɓi kewayon da ya fi ƙarfin lantarki da aka kiyasta (misali 20V don batirin 9V ko 12V).
4. Haɗa na'urorin bincike a layi ɗaya: ja zuwa wurin da ke da kyau, baƙi zuwa wurin da ba shi da kyau/ƙasa.
5. Karanta sakamakon. Idan alamar cirewa (-) ta bayyana, yana nufin an juya polarity ɗin (ja probe yana wurin da ba shi da kyau).
Shawara: Tabbatar cewa ƙarshen na'urar binciken ba ta taɓa juna ba lokacin aunawa a wurare masu kunkuntar domin wannan na iya haifar da gajeren da'ira.
5. Dabaru don auna ƙarfin wutar lantarki na AC (V~)
Ƙarfin wutar lantarki na AC (madadin wutar lantarki) yawanci yana a wutar lantarki ta gida (PLN), na'urar canza wutar lantarki, da kuma fitowar adaftar da dama. Matakan sune:
1. Baƙar fata zuwa COM, ja zuwa VΩ.
2. Zaɓi yanayin ACV (V~).
3. Zaɓi kewayon da ya dace, misali 600V ko 750V don wutar lantarki ta gida dangane da ma'aunin multimeter.
4. Haɗa na'urar aunawa mai layi ɗaya zuwa wurin tushe ko wurin aunawa.
5. Karanta ƙimar ƙarfin lantarki.
Tsaro: lokacin auna ƙarfin AC mai girma, yi amfani da hannu ɗaya duk lokacin da zai yiwu, a guji taɓa sassan ƙarfe na na'urar bincike, kuma a tabbatar da cewa rufin kebul bai lalace ba.
6. Fasaha don auna juriya (Ω)
Ma'aunin juriya yana da amfani wajen duba ƙimar juriya, kebul da suka karye, ko yanayin wasu sassan. Matakai:
1. Kashe tushen wutar lantarki na da'irar kuma tabbatar da cewa capacitor an saki babban.
2. Baƙar fata zuwa COM, ja zuwa VΩ.
3. Juya mai zaɓen zuwa Ω.
4. Taɓa dukkan na'urorin bincike guda biyu zuwa ƙafafun ɓangaren/resistor.
5. Karanta sakamakon. Idan na'urar multimeter ta nuna "OL" ko "1" (ya danganta da samfurin), juriyar ta yi yawa ko kuma da'irar a buɗe take.
Domin samun sakamako mai inganci, a auna juriyar bayan an cire ɗaya daga cikin ƙafafunsa daga da'irar don kada wasu hanyoyi su shafe shi.
7. Gwajin Ci gaba
Ana amfani da yanayin ci gaba don duba ko maki biyu sun haɗu (misali, kebul, waƙoƙin PCB, maɓallan wuta). Yawanci ana yi masa alama da lasifika ko alamar raƙuman sauti. Fasaha:
1. Zaɓi yanayin ci gaba.
2. Taɓa na'urar bincike zuwa maki biyu da kake son gwadawa.
3. Idan ka ji sautin "beep", yana nufin juriyar ta yi ƙanƙanta kuma layin ya haɗu.
Ci gaba yana da matuƙar amfani lokacin neman wayoyi da suka karye, wayoyin PCB da suka fashe, ko duba fiyus ɗin.
8. Gwajin Diode
Ana amfani da yanayin diode don duba diodes, LEDs, da kuma hanyoyin haɗin semiconductor kamar transistor (a ƙarƙashin wasu sharuɗɗa). Matakai na gaba ɗaya:
1. Zaɓi yanayin diode.
2. Binciken ja yawanci yana zuwa ga anode, baƙi zuwa cathode (ya danganta da multimeter, amma akan DMM wannan yawanci haka yake).
3. Na'urar multimeter tana nuna ƙarfin lantarki na gaba, misali 0,5–0,7V don diodes na silicon, ko 1,8–3,3V don LEDs (wasu launuka).
4. Idan aka juya aka kuma rubuta "OL," diode ɗin zai zama kamar al'ada. Idan ya karanta ƙasa da duka hanyoyi biyu, diode ɗin zai iya zama gajere; idan ya karanta OL duka hanyoyi biyu, zai iya karyewa.
9. Dabaru don auna wutar lantarki ta DC/AC (A)
Ma'aunin yanzu shine mafi haɗari saboda dole ne a haɗa na'urar multimeter a jere. Matakai:
1. Kayyade ƙimar wutar lantarki. Fara daga tashar 10A idan kana da shakku.
2. Matsar da jan na'urar bincike zuwa tashar A/10A, na'urar bincike baƙar fata tana nan a kan COM.
3. Juya zaɓin zuwa DC ko A AC kamar yadda ake buƙata.
4. Katse da'irar a wani wuri, sannan ka haɗa multimeter a jere: dole ne wutar lantarki ta "ratsa" multimeter.
5. Karanta sakamakon. Idan ya yi ƙanƙanta sosai, canza zuwa tashar mA (idan babu matsala) don samun ingantaccen bayani.
Muhimmin bayani: kar a auna wutar lantarki tare da na'urar bincike a cikin tashar jiragen ruwa ta yanzu sannan a haɗa ta kai tsaye a layi ɗaya da tushen wutar lantarki, domin hakan yana haifar da ɗan gajeren da'ira.
10. Kurakurai da Nasihu Kan Tsaro da Aka Fi Sani
Wasu kurakurai na yau da kullun:
– Na manta da motsa jan binciken daga tashar A zuwa tashar VΩ bayan na gama auna wutar.
- Zaɓin yanayin da ba daidai ba (misali auna ƙarfin lantarki amma mai zaɓe akan Ω).
- Auna juriya akan da'irar da har yanzu ake samar da wutar lantarki.
– Zaɓin kewayon da ya yi ƙasa sosai yana haifar da "nauyi mai yawa".
Nasihu kan tsaro:
– Yi amfani da na'urar multimeter mai nau'in tsaro mai dacewa (CAT II/CAT III/CAT IV) lokacin aiki a shigarwar lantarki.
– Duba yanayin na'urar bincike da kuma rufin kafin amfani.
– Riƙe na'urar binciken ta hanyar amfani da rufin, ba ƙarfe ba.
– Yi amfani da mafi girman kewayon farko idan ba ka da tabbas.
– A guji yin aiki a wuraren da ke da danshi kuma a yi amfani da tabarma mai rufe jiki idan ya cancanta.
Penutup
Dabaru na auna mita da yawa sun ƙunshi fiye da kawai juya mai zaɓe da karanta lambobi. Hakanan sun haɗa da fahimtar da'irori , zaɓar yanayin da ya dace, da kuma amfani da ƙa'idar layi-layi daidai. Ta hanyar ƙwarewa a cikin ƙarfin lantarki na DC/AC, juriya, ci gaba, diode, da ma'aunin yanzu, zaku iya gano matsaloli daban-daban na lantarki da na lantarki cikin sauri da aminci. Yi amfani da multimeter akan da'irori masu sauƙi da farko, sannan ku ci gaba zuwa ma'auni masu rikitarwa yayin da kuke samun ƙwarewa. Ta wannan hanyar, multimeter ba wai kawai kayan aikin aunawa bane har ma da babban "ido" wajen fahimtar halayen da'ira.
