Multimeter chizindikiro tebulo: kufotokoza
Zamkatimu
Kodi multimeter ndi chiyani?
Multimeter ndi chida choyezera chomwe chimatha kuyeza mawonekedwe osiyanasiyana amagetsi monga magetsi, kukana, komanso magetsi. Chipangizochi chimatchedwanso volt-ohm-millimeter (VOM) chifukwa chimagwira ntchito ngati voltmeter, ammeter, ndi ohmmeter.
Mitundu ya multimeters
Zida zoyezerazi zimasiyana kukula, mawonekedwe ndi mitengo ndipo zimapangidwira kuti zizinyamulidwa kapena kugwiritsidwa ntchito patebulo malinga ndi zomwe akufuna. Mitundu ya ma multimeters ndi awa:
- Analogi multimeter (phunzirani kuwerenga apa)
- Digital multimeter
- Fluke multimeter
- Chotsani multimeter
- Makina opangira ma multimeter
Multimeter ndi imodzi mwa zida zoyezera zomwe zimagwiritsidwa ntchito kwambiri masiku ano. Komabe, oyamba kumene nthawi zambiri zimakhala zovuta kuzindikira zizindikiro pa multimeter. M'nkhaniyi, tikuwonetsani momwe mungadziwire otchulidwa pa multimeter.
Ngakhale mitundu yosiyanasiyana ya ma multimeter ilipo pamsika, onse amagwiritsa ntchito chizindikiro chofanana. Zizindikiro zitha kugawidwa m'magawo otsatirawa:
- Chizindikiro cha On/Off
- chithunzi cha gate
- Chizindikiro cha Voltage
- Chizindikiro chapano
- Chizindikiro chotsutsa
Tanthauzo la zizindikiro pa multimeter
Zizindikiro za multimeter zikuphatikizapo:
| Chizindikiro | Kachitidwe kachitidwe |
| GWIRANI batani | Zimathandiza kulemba ndi kusunga deta yoyezedwa. |
| Batani la / off | Tsegulani, zimitsani. |
| Chithunzi cha COM | Zimayimira Common ndipo nthawi zonse zimagwirizanitsidwa ndi nthaka (Ground) kapena cathode ya dera. Doko la COM nthawi zambiri limakhala lakuda ndipo limalumikizidwanso ndi kafukufuku wakuda. |
| pa 10A | Ili ndi doko lapadera, lomwe nthawi zambiri limapangidwa kuti lizitha kuyeza mafunde apamwamba (> 200 mA). |
| mA, mu | Doko loyezera lotsika. |
| mA ohm doko | Ili ndi doko lomwe kafukufuku wofiyira nthawi zambiri amalumikizidwa. Dokoli limatha kuyeza pano (mpaka 200mA), voteji (V), ndi kukana (Ω). |
| doko oCVΩHz | Ili ndiye doko lolumikizidwa kumayendedwe oyeserera ofiira. Imakulolani kuyeza kutentha (C), voteji (V), kukana (), ma frequency (Hz). |
| Doko loona la RMS | Nthawi zambiri amalumikizidwa ndi waya wofiyira. Kuyeza muzu wowona amatanthauza square (RMS yeniyeni) parameter. |
| Sankhani batani | Zimathandiza kusinthana pakati pa ntchito. |
| kuwala | Sinthani kuwala kwa chiwonetserocho. |
| Mphamvu yamagetsi | Alternating current. Zogulitsa zina zimangotchulidwa kuti A. |
| DC voltage | D.C. |
| Hz | Yesani pafupipafupi. |
| DUTI | Kuyeza kuzungulira. Yezerani luso lapano. Yang'anani kupitiliza, dera lalifupi (Kupitiliza cheke). |
| chizindikiro batani | Mayeso a Diode (Mayeso a Diode) |
| hFE | Mayeso a Transistor-transistor |
| NCV | Ntchito yolumikizirana yosalumikizana |
| REL batani (chibale) | Khazikitsani mtengo wolozera. Imathandiza kufananitsa ndi kutsimikizira milingo yosiyanasiyana. |
| RANGE batani | Sankhani malo oyenera kuyeza. |
| MAX / mphindi | Sungani zolembera zambiri komanso zochepa; Beep zidziwitso pamene mtengo woyezedwa uposa mtengo wosungidwa. Ndiyeno mtengo watsopanowu walembedwa. |
| Chizindikiro Hz | Imawonetsa mafupipafupi a dera kapena chipangizo. |
Kugwiritsa ntchito multimeter?
- Amagwiritsidwa ntchito kuyeza voteji, mwachitsanzo: kuyeza DC panopa, AC panopa.
- Yesani kukana ndi voteji nthawi zonse, panopa ndi ohmmeter yaing'ono.
- Amagwiritsidwa ntchito poyeza nthawi ndi mafupipafupi. (1)
- Kutha kuzindikira zovuta zamagetsi zamagetsi m'magalimoto, kuyang'ana mabatire, zosinthira magalimoto, ndi zina zambiri. (2)
Nkhaniyi ikupereka matanthauzo azizindikiro kuti azindikire zizindikiro zonse zowonetsedwa pa multimeter. Ngati taphonya imodzi kapena malingaliro, omasuka kutitumizira imelo.
ayamikira
(1) kuyeza pafupipafupi - https://www.researchgate.net/publication/
269464380_Frequency_Measurement
(2) kuzindikira mavuto - https://www.sciencedirect.com/science/article/
pii/0305048393900067
