Yuav ua li cas siv lub multimeter los kuaj lub cell load
Load cells yog siv dav hauv kev lag luam hnyav (xws li siv cov nplais, ntsuas qhov hnyav, ntsuas hluav taws xob, ntsuas lub cev, thiab lwm yam), kev ntsuas kev quab yuam, thiab ntsuas lub zog tensile. Kev siv teb rau hauv cov txheej txheem ntawm kev thauj khoom ntawm tes tsis ua haujlwm feem ntau yog raws li hauv qab no.
1. Sensor overload, tus neeg siv thiab cov chaw tsim tshuaj paus tsis sib txuas lus kom meej, qhov sensor ntau thiab qhov tseeb quab yuam tus nqi, qhov hnyav loj mismatch, ua rau sensor overload, thiaj li hais tias tus sensor choj caj npab kuj deformation los ntawm Circuit Court imbalance. Sensor tsis tuaj yeem ua haujlwm zoo, cov teeb liab tso zis hloov pauv, tsis kam tiv thaiv infinity thiab lwm yam tshwm sim.
2. Sensor lead rub tawm, tus neeg siv tsis ua cov txheej txheem ntawm kev tiv thaiv kev ntsuas sensor lead rub tawm, feem ntau nyob rau hauv lub sensor lead interface tawg cuam tshuam rau lub sensor siv cov tsis teb los yog tam sim ntawd hloov ntawm cov nqi ntsuas. 3. Kev siv tsis zoo ntawm cov sensors, static sensors hauv kev siv cov kev cuam tshuam, shear, torque thiab lwm yam kev puas tsuaj loj rau lub sensor kom kho tsis tau.
Yog li yuav ua li cas peb thiaj li siv tau lub multimeter ntawm qhov chaw kuaj pom qhov ua txhaum ntau hauv lub xov tooj ntawm tes?
1, lub chaw tsim khoom ntawm cov khoom siv hluav taws xob los muab cov khoom tso tawm sensor rhiab heev thiab cov khoom siv hluav taws xob, peb kuaj pom cov teeb liab tso tawm raws li ob qhov kev ntsuas no. Strain gauge load cell tso zis analogue teeb liab millivolt voltage. Piv txwv li, lub sensor tso zis rhiab heev yog 2. 0V, lub sensor tso zis teeb liab sib raug rau cov zis ntawm txhua 1V excitation voltage 2.0mV linear kev sib raug zoo. Piv txwv li, lub sensor tag nrho teev yog 50KG, ces muab lub sensor DC10V voltage tag nrho teev tso zis 20mV. Raws li qhov kev sib raug zoo no peb siv lub multimeter mV iav los ntsuas lub sensor tso zis teeb liab. Sensor tsis muaj load tso zis yog 0mV ib txwm, ntau dua li tus nqi no, tab sis ze rau qhov nqi no, tus nqi ntawm qhov kev hloov yog tias lub sensor muaj xoom drift. Yog hais tias tus nqi yog loj heev uas lub sensor puas los yog nyob rau hauv tus choj yog lub Circuit Court, tus choj caj npab kuj asymmetry.
2, raws li lub Hoobkas sensor muab sensor tsis, input resistance thiab output resistance los txiav txim seb lub sensor strain gauge puas. Sensor input thiab output resistance tus nqi ntawm txhua lub chaw tsim tshuaj paus tsis yog tib yam specifications. Yog li qhov no yuav tsum tau sim ua raws li cov chaw tsim khoom daim ntawv lo. Nrog ib tug multimeter ohm iav nrhiav kom tau, lub hwj chim mov thiab lub hwj chim av kuj, teeb liab kab thiab teeb liab av kuj. Yog hais tias tus nqi kuj yog loj dua lub Hoobkas qhia tias lub sensor tau overloaded strain gage deformation, yog hais tias tus nqi kuj yog infinite sensor strain gage loj puas yuav kho tsis tau.
3. Vim tias lub sensor feem ntau siv rau hauv cov txheej txheem ntawm cov hlau lead tawg, thiab cov txheej txheem txheej txheej ntawm cov kab sheath tsis zoo, yog li qhov pom ntawm lub sensor hlau tsis zoo, peb siv lub multimeter ohm iav nrhiav kom pom sensor hlau los ntawm kev tawg. Yog hais tias qhov kev tiv thaiv yog infinite los txiav txim qhov tawg, yog hais tias tus tsis kam hloov kev sib cuag tsis zoo.
