Maitiro ekutarisa iko zvinoyerera pamota ine multimeter

Iyo yemagetsi system yakagara ichiita chikamu chemotokari, pasina mashandiro ayo asingagone kungofamba - kunyangwe kuvhura magonhi kuti uwane salon. Aya mamiriro anowanzoitika kana bhatiri rakaburitswa zvakadzama nekuda kwenzvimbo dzakadzika dzekudonha.

Uye zvakare, iyo yazvino leakage inobatsira kukurumidza kupfeka kwemidziyo yemagetsi, kutanga kwezvose - bhatiri, mune iyo, nekuda kwekugara uchidzikiswa kuburitswa, iyo sulfatization yemapureti mahwendefa akawedzera zvakanyanya. Ngatiedzei kuona kuti zvikonzero zvipi zvinogona kukonzeresa yazvino uye kuti ungazviona sei uchishandisa yakajairika imba multimeter.

Zvikonzero zvikuru zvekudonha

Kwese kudonha kunoitika mumotokari kunogona kuve kwakakamurwa kuita zvakajairika uye kwakashata. Boka rekutanga rinosanganisira mafashama anokonzerwa nekushanda kwema standard masystem pazororo, semuenzaniso, nemaaramu, pamwe neaya anomuka kubva musiyano ungangoita wemagetsi static uye "minus" yebhatiri rakabatana nehukuru hwemota. Kuvuza kwakadaro kunenge kusingadzivisike uye kazhinji kusingakoshe - kubva pa20 kusvika 60 mA, dzimwe nguva (mumotokari hombe dzakazara nemagetsi) - kusvika zana mA.

Kuvuza kwakakanganisa kunosanganisira mafungu akakwirira zvakanyanya (kubva pamazana emamirioni kusvika makumi emamperes) uye anowanzo kuve mhedzisiro yematambudziko anotevera:

• kusarongeka kwakashata, kusvibiswa kana kusanganiswa kwevanosangana navo;
• mapfupi maseketi mukati memidziyo (semuenzaniso, mukutenderera kweanotenderera);
• maseketi mapfupi mumatunhu ekunze (anowanzo kuperekedzwa ne arcing uye kudziyisa, izvo zvakaoma kuti usazvione);
• kusashanda zvakanaka kwemidziyo yemagetsi;
• kubatana kusiri kwayo kwemidziyo inosarudzika (odhiyo masystem, kudziyisa masisitimu, vhidhiyo marekodhi, nezvimwewo), kusanganisira kupfuura switch yemoto.

Iyo yakakwira iyo yadeuka yazvino, iyo inomhanyisa kuburitsa bhatiri kunenge kuri, mune kunyanya zviitiko zvemberi zvinotora maawa akati wandei. Naizvozvo, zvakakosha kuti uongorore kuburitsa munguva, kuona uye kubvisa chinokonzera kuitika kwayo.

Kuongororwa kwekudonha nemultimeter

Kune avo vachiri vatsva kune multimeter, tinokurudzira kuverenga chinyorwa: mashandisiro aungaita multimeter kune madummies, umo modhi dzese dzekumisikidza nemitemo yekushandisa chishandiso inofungidzirwa zvakadzama.

Kuongorora leakage yazvino mumotokari ine multimeter inoitwa muDC ammeter modhi. Kuti uite izvi, chinjana chechigadzirwa chinotamisirwa kunzvimbo yakasarudzika nemavara DCA uye yakaiswa panopatsanurwa "10A". Iyo tsvuku (yakanaka) probe inoiswa mune 10ADC socket, iyo nhema (yakaipa) probe mune COM socket, iyo inowanzo kuve iri pasi. Kana iwo akachinjika uye akapatsanurwa pane yako multimeter akaratidzirwa zvakasiyana, ita shuwa kuti uverenge iwo mirairo usati waibatanidza kune mota pane-bhodhi network.

Mushure mekugadzirira chishandiso, enda kumberi kune iko kuita kwekutonga uye kuyera basa. Kuti uite izvi, pamotokari ine simba rakatemwa, svinura uye bvisa isina kunaka bhatiri, richigeza uye nekubata kwebhatiri kana paine kusvibiswa kana oxidation. Iyo tsvuku probe ye multimeter yakagadzika mukucheka kweiyo terminal kana chero yakanakira poindi yehuremu, kuve nechokwadi chekubatana kwayo kwakasimba nepamusoro, uye iyo nhema iyo inoiswa kune yakashata kusangana kwebhatiri. Chimbo chacho chinoratidza iyo chaiyo yekudonha ikozvino. Kana chiratidziro chikaramba chiri zero, chimbo chinogona kumisikidzwa 200m modhi kuti itarise zvakajairika (kana zvishoma zvishoma) kuburitsa ikozvino.

Tsvaga vatengi vane kukanganisa kana zvisirizvo zvakabatana

Aya mabasa anodikanwa kana iyo inoonekwa yekubuda kwazvino inodarika 0,1-0,2 amperes (100-200 mA). Kazhinji zvinonyanya kuve nyore kuti uone iyo chaiyo poindi iyo iyo yakasimuka mune yekuwedzera gap.

Kuti uite izvi, pamidziyo yese, kutanga kubva pane "zvinofungidzirwa" zvakanyanya maererano nekubatana kana mamiriro ehunyanzvi, inotevera algorithm yebasa inoitwa:

• kudzima kuvesa;
• kudimbura mutengi kubva pamutsetse wekuwedzera;
• kuchenesa uye kugadzirira nzvimbo dzekuonana;
• kubatanidza ammeter kune yakavhurika dunhu mune akateedzana;
• kuverenga chimbo kuverenga;
• kana kuverenga kuri zero, mutengi anoonekwa seanoshanda;
• kana kuverenga kwacho kwakasiyana nezero, asi kushoma pane kuburitsa kwese, zvakanyorwa, uye kutsvaga kwacho kunopfuurira;
• kana kuverenga kwacho kwakaenzana kana kungangoenzana neyesegeji yazvino, kutsvaga kunopera;
• Chero zvazvingaitika, mushure mekupedza basa, zvakakosha kuti udzore kutendeseka kwedunhu uye isa nzvimbo yekutaurirana.

Izvo zvinoitika kuti mushure mekutarisa vese vatengi, zvaive zvisingakwanise kuona kubuda, asi kuongororwa kwakawanda kuchiri kuratidza kuvepo kwayo. Mune ino kesi, zvinongedzo uye matavi evatungamiriri anogona kunge ari iwo anokonzeresa. Edza kuvabvisa, kudzorera kuwanda kwekutaurirana. Kana mushure meizvozvo kudonha kwacho kusingakwanise kubviswa, bata aneruzivo wemagetsi anoongorora kutendeseka kwese kwese-kutakura mitsara nemidziyo yakakosha.

Vhidhiyo: maitiro ekuona kubuda kweropa mumota

Mibvunzo nemhinduro:

Nzira yekutarisa sei kuvuza ikozvino ne multimeter? Iyo multimeter inogadzirisa ikozvino kuyerwa maitiro (10A). Iyo yakaipa terminal yebhatiri inobviswa. Iyo dzvuku probe ndeyeiyi terminal, uye iyo dema ndeyeiyo yakaipa kubata kwebhatiri.

Unoziva sei kuti bhatiri riri kuchaja? Mushure mekubatanidza iyo multimeter, vatengi vanobatanidzwa vachichinjana. Iyo dambudziko mudziyo uchazviratidza apo, mushure mekuidzima, iyo chiratidzo pane multimeter inodzokera kune yakajairika.

Ndeipi iyo inobvumirwa leakage ikozvino pamotokari? Iyo inobvumirwa kuvuza ikozvino mwero ndeye 50-70 milliampere. Iyo yakawanda inobvumirwa kukosha ndeye 80 kusvika 90 mA. Kana iyo yekudonha yazvino ichipfuura 80mA, bhatiri rinobuda nekukurumidza kunyangwe nekudzimwa kwakadzimwa.