Kev ntsuas hluav taws xob ntsuas hluav taws xob yog qhov tseem ceeb rau txhua qhov kev lag luam, kev lag luam thiab kev lag luam. Txij li cov cell load yog cov khoom tseem ceeb ntawm kev ntsuas lub zog, lawv yuav tsum raug thiab ua haujlwm zoo txhua lub sijhawm. Txawm hais tias yog ib feem ntawm kev saib xyuas los yog teb rau qhov kev ua haujlwm tsis zoo, paub yuav ua li cas kuaj aload celltuaj yeem pab txiav txim siab txog kev kho lossis hloov cov khoom siv.
Vim li cas thiaj li load cells ua tsis tau?
Load cells ua haujlwm los ntawm kev ntsuas lub zog tawm ntawm lawv los ntawm lub teeb liab hluav taws xob xa los ntawm lub zog tswj hwm. Cov cuab yeej tswj hwm, xws li lub tshuab hluav taws xob lossis lub zog tswj lub zog, tom qab ntawd hloov cov teeb liab mus rau qhov yooj yim-rau-nyeem ntawv tus nqi ntawm cov cim qhia digital. Lawv yuav tsum tau ua nyob rau hauv yuav luag txhua qhov chaw, uas tej zaum yuav ua rau muaj ntau yam teeb meem rau lawv functionality.
Cov kev cov nyom no ua rau cov hlwb ua rau tsis ua haujlwm thiab, qee zaum, lawv yuav ntsib teeb meem uas cuam tshuam rau lawv txoj haujlwm. Yog tias qhov tsis ua haujlwm tshwm sim, nws yog ib lub tswv yim zoo los xyuas qhov tseeb ntawm qhov system ua ntej. Piv txwv li, nws tsis yog qhov tsis tshua muaj rau cov nplai kom muaj peev xwm ntau dhau. Ua li no tuaj yeem deform lub load cell thiab txawm ua rau poob siab loading. Lub zog surges kuj tuaj yeem rhuav tshem cov hlwb, xws li muaj peev xwm ya raws lossis tshuaj lom ntawm qhov nkag ntawm qhov ntsuas.
Kev ntseeg tau cov cim qhia ntawm lub cev tsis ua haujlwm muaj xws li:
Scale/device yuav tsis rov pib dua lossis calibrate
Cov ntawv nyeem tsis sib xws lossis tsis ntseeg
Unrecordable hnyav los yog nro
Random drift ntawm xoom tshuav nyiaj li cas
tsis tau nyeem kiag li
Load Cell Troubleshooting:
Yog tias koj lub cev ua haujlwm tsis zoo, xyuas seb lub cev deformities. Tshem tawm lwm qhov laj thawj ntawm qhov tsis ua haujlwm - frayed interconnect cables, xoob xaim, kev teeb tsa lossis kev sib txuas rau qhov nro qhia cov vaj huam sib luag, thiab lwm yam.
Yog hais tias lub load cell tsis ua hauj lwm tseem tshwm sim, ib tug series ntawm teeb meem tshuaj ntsuam xyuas yuav tsum tau ua.
Nrog kev txhim khu kev qha, zoo DMM thiab tsawg kawg yog 4.5-tus lej ntsuas, koj tuaj yeem sim rau:
xoom tshuav
Rwb thaiv tsev tsis kam
choj kev ncaj ncees
Thaum qhov laj thawj ntawm qhov ua tsis tiav tau raug txheeb xyuas, koj pab neeg tuaj yeem txiav txim siab yuav ua li cas mus tom ntej.
Zero balance:
Kev ntsuas xoom xoom tuaj yeem pab txiav txim siab seb lub xov tooj ntawm tes tau raug kev puas tsuaj rau lub cev, xws li overload, poob siab, lossis hlau hnav lossis qaug zog. Xyuas kom tseeb tias lub cell load yog "tsis muaj load" ua ntej pib. Thaum ib tug xoom tshuav kev nyeem ntawv qhia, txuas lub load cell input terminals rau lub excitation los yog input voltage. Ntsuas qhov voltage nrog millivoltmeter. Faib qhov kev nyeem ntawv los ntawm kev tawm tswv yim lossis qhov kev tawm dag zog kom tau txais xoom qhov kev nyeem ntawv hauv mV / V. Qhov kev nyeem ntawv no yuav tsum phim daim ntawv pov thawj load cell calibration los yog cov ntaub ntawv cov khoom. Yog tsis yog, lub load cell yog phem.
Rwb thaiv tsev tsis kam:
Lub rwb thaiv tsev tiv thaiv yog ntsuas ntawm cov ntaub thaiv npog cable thiab cov khoom siv hluav taws xob. Tom qab disconnecting lub load cell los ntawm lub junction box, txuas tag nrho cov leads ua ke - input thiab output. Ntsuas cov rwb thaiv tsev tiv thaiv nrog megohmmeter, ntsuas qhov rwb thaiv tsev tiv thaiv ntawm cov hlau lead txuas thiab lub cev thauj khoom, tom qab ntawd cov ntaub thaiv npog cable, thiab thaum kawg cov rwb thaiv tsev tiv thaiv ntawm lub cev ntawm lub cev thiab cov ntaub thaiv npog cable. Rwb thaiv tsev nyeem ntawv yuav tsum yog 5000 MΩ los yog ntau dua rau tus choj-rau-cov ntaub ntawv, choj-rau-cable shield, thiab case-to-cable shield, feem. Cov nqi qis dua qhia txog kev xau los ntawm kev ya raws los yog tshuaj lom neeg corrosion, thiab tsis tshua muaj kev nyeem ntawv yog ib qho kev qhia tseeb ntawm luv luv, tsis yog ya raws.
Choj kev ncaj ncees:
Tus choj kev ncaj ncees kuaj xyuas cov tswv yim thiab cov zis tsis kam thiab ntsuas nrog ohmmeter ntawm txhua khub ntawm cov tswv yim thiab cov khoom tawm. Siv cov ntaub ntawv tseem ceeb tshwj xeeb, sib piv cov kev tawm tswv yim thiab cov zis tawm los ntawm "tsis zoo tso zis" mus rau "cov tswv yim tsis zoo", thiab "tsis zoo tso tawm" rau "ntxiv cov tswv yim". Qhov sib txawv ntawm ob qhov tseem ceeb yuav tsum tsawg dua lossis sib npaug li 5 Ω. Yog tias tsis yog, tej zaum yuav muaj cov hlau tawg lossis luv luv los ntawm kev poob siab, kev vibration, puas, lossis kub heev.
Impact resistance:
Load cells yuav tsum txuas nrog lub zog ruaj khov. Tom qab ntawd siv lub voltmeter, txuas mus rau cov zis coj los yog cov terminals. Ceev faj, thawb lub load hlwb lossis rollers los qhia me ntsis kev poob siab, ua tib zoo tsis txhob siv cov khoom siv ntau dhau. Saib xyuas kev ruaj ntseg ntawm kev nyeem ntawv thiab rov qab mus rau qhov qub zero tshuav kev nyeem ntawv. Yog tias qhov kev nyeem ntawv tsis raug, nws yuav qhia tau tias qhov kev sib txuas hluav taws xob ua tsis tau zoo lossis kev hloov hluav taws xob tuaj yeem ua rau lub cev puas tsuaj ntawm qhov ntsuas qhov ntsuas thiab cov khoom.
Post lub sij hawm: May-24-2023
