Interface 7418 Load Cell Force Measurement System
Specifications
- Qauv: Load Cell Troubleshooting Guide v1.0
- Chaw tsim tshuaj paus: Interface Force Systems
- Kev ntsuas Hom: Force lossis Nyhav
- Qhov chaw: 7418 East Helm Drive, Scottsdale, AZ 85260
- Hu rau: 480.948.5555
- Webqhov chaw: interfaceforce.com
Cov lus qhia siv khoom
Mechanical Installation
Kev txhim kho kom zoo ntawm cov cell load yog qhov tseem ceeb rau kev ua tau zoo.
Ua raws li cov kauj ruam no:
- Mount load hlwb raws li cov neeg tsim khoom pom zoo.
- Xyuas kom tseeb tias cov khoom siv raug siv los txuas cov khoom thauj mus rau lub xov tooj ntawm tes.
- Xyuas kom tseeb tias tsuas muaj ib txoj hauv kev thauj khoom los ntawm kev thauj khoom ntawm lub xov tooj ntawm tes.
Kev teeb tsa hluav taws xob
Kev teeb tsa hluav taws xob raug yog qhov tseem ceeb rau kev ua haujlwm zoo ntawm lub xov tooj ntawm tes.
Xav txog cov hauv qab no:
- Xyuas choj circuitry thiab xoom tshuav.
- Ua cov kev ntsuas rwb thaiv tsev siv cov khoom tsim nyog.
Load Cell Kev Ntsuam Xyuas
- Ua ib qho kev kuaj mob uas siv lub ohmmeter.
- Yog tias kuaj pom muaj teeb meem, xa rov qab mus rau lub Hoobkas rau kev soj ntsuam thiab kho ntxiv.
FAQ
Q: Kuv yuav ua li cas yog tias kuv lub xov tooj thauj khoom puas lossis ua tsis tau zoo?
A: Yog tias koj xav tias muaj teeb meem nrog koj lub xov tooj ntawm tes, ua raws li cov lus qhia daws teeb meem hauv phau ntawv qhia.
Tshawb xyuas cov khoom siv tshuab thiab hluav taws xob, ua cov kev sim, thiab yog tias xav tau, xa rov qab lub tsev mus rau lub Hoobkas rau kev ntsuam xyuas thiab kho.
Taw qhia
Kev ua tau zoo ntawm lub zog ntawm lub zog (lossis qhov hnyav) ntsuas qhov system yog nyob ntawm qhov kev ncaj ncees ntawm lub cev kev teeb tsa, kev sib cuam tshuam ntawm cov khoom, kev ua tau zoo ntawm cov khoom siv hauv paus uas ua rau lub cev, thiab ntsuas qhov system. Xav tias qhov kev teeb tsa tau pib ua haujlwm thiab raug ntsuas, kev daws teeb meem tuaj yeem pib los ntawm kev tshuaj xyuas cov khoom ntawm tus kheej kom txiav txim siab seb lawv puas tau puas lossis ua tsis tiav.
Cov yam ntxwv tseem ceeb yog:
- Load cells
- Kev txhawb nqa tshuab thiab thauj khoom sib txuas
- Cov kab sib txuas
- Cov thawv sib txuas
- Cov teeb liab txias electronics
Mechanical Installation
- Load Cells uas tsis mounted nyob rau hauv cov chaw tsim tshuaj paus cov lus pom zoo yuav tsis ua raws li cov chaw tsim tshuaj paus specifications.
Nws yog ib txwm tsim nyog los xyuas:
- Mounting nto rau kev huv, flatness, thiab sib dhos
- Torque ntawm tag nrho cov mounting hardware
- Load cell orientation: "Tuag" kawg ntawm kev siv tshuab lossis kev thauj khoom quab yuam, "nyob" kawg txuas nrog lub load los ntsuas. (Qhov kawg tuag yog qhov kawg ze tshaj mechanically rau cable tawm los yog connector.)
- Cov khoom siv tsim nyog (xov qhov ntau thiab tsawg, cov txiv ntoo jam, swivels, thiab lwm yam) raws li xav tau los txuas cov khoom thauj mus rau lub xov tooj ntawm tes. Ib qho tseem ceeb yuav tsum muaj yog tias muaj ib qho, thiab tsuas yog ib txoj kev thauj khoom xwb!
- Txoj kev thauj khoom no yuav tsum yog los ntawm lub axis ntawm lub load cell. Qhov no yuav ua suab nrov, txawm li cas los xij nws yog ib qho teeb meem uas feem ntau saib tsis tau.
Kev teeb tsa hluav taws xob
- Kev ua tau zoo ntawm lub xov tooj ntawm tes kuj yog nyob ntawm qhov hluav taws xob "system." Cov khoom hauv qab no yog cov teeb meem tshwm sim.
- Kev sib txuas hluav taws xob xoob lossis qias neeg, lossis kev sib txuas tsis raug ntawm cov xov hlau xim xim.
- Ua tsis tau tejyam siv tej thaj chaw deb sensing ntawm excitation voltage ntawm cov kab ntev.
- Incorrect setting of excitation voltage. (Qhov zoo tshaj plaws yog 10 VDC vim hais tias voltage yog siv los calibrate lub load cell hauv lub Hoobkas.
- Qhov siab tshaj plaws voltage tso cai yog 15 lossis 20 volts, nyob ntawm tus qauv. Qee lub tshuab hluav taws xob ua hluav taws xob siv hluav taws xob siv me me voltages, nqis mus rau 1.25 volts, kom txuag tau roj teeb.)
- Kev thauj khoom ntawm tus choj Circuit Court. (Cov tshuab hluav taws xob muaj tseeb heev xav tau cov cuab yeej nyeem tau zoo heev. Cov cuab yeej no feem ntau muaj cov tswv yim impedances siab heev kom tsis txhob muaj qhov yuam kev hauv Circuit Court.)
Load Cell Kev Ntsuam Xyuas
- Nws yog qhov yooj yim heev los ua qhov kev kuaj mob ceev ntawm lub xov tooj ntawm tes. Cov txheej txheem yog yooj yim heev thiab yam tsawg kawg nkaus ntawm cov cuab yeej yuav tsum tau.
- Yog tias nws tau txiav txim siab tias lub xov tooj ntawm tes yog qhov ua txhaum, lub tsev yuav tsum tau xa rov qab mus rau lub Hoobkas rau kev ntsuam xyuas ntxiv thiab kho raws li qhov yuav tsum tau ua. Muaj ntau qhov kev kuaj xyuas tuaj yeem ua nrog lub ohmmeter.
Tshawb xyuas Choj Circuitry Thiab Zero Balance
- Cov lej siv rau tus qauv 350-ohm txuas hniav.
- Cov cuab yeej xav tau: Ohmmeter nrog 0.1 ohms daws teeb meem hauv thaj tsam ntawm 250-400 ohms.
- Choj Input Resistance: RAD yuav tsum yog 350 ± 3.5 ohms (tshwj tsis yog lub xov tooj ntawm tes muaj "tus qauv tso tawm," nyob rau hauv cov ntaub ntawv qhov kev tiv thaiv yuav tsum tsawg dua 390 ohms)
- Choj Output Resistance: RBC yuav tsum yog 350 ± 3.5 ohms
- Choj Leg Resistance: Sib piv cov ceg tiv thaiv ntawm qhov tsis muaj load tso cai rau kev soj ntsuam ntawm qhov ua rau muaj kev puas tsuaj tas mus li hauv lub load cell flexure. Qhov "computed unbalance" ntawm tus choj qhia qhov dav dav ntawm lub cell.
- Qhov ntsuas tsis sib npaug, hauv cov chav ntawm "mV / V," yog txiav txim siab raws li hauv qab no: Unbalance = 1.4 • (RAC – RAB + RBD –RCD)
- Lub Zero Offset, nyob rau hauv units ntawm "% ntawm Rated Output", yog txiav txim raws li nram no: Zero Offset = 100 • Unbalance ÷ Rated Output
- Yog tias qhov kev daws teeb meem ohmmeter yog 0.1 ohm lossis zoo dua, tom qab ntawd suav nrog Zero Offset ntau dua 20 feem pua yog qhov qhia meej ntawm kev tshaj tawm. Kev suav xoom tshuav ntawm 10-20% yog qhov qhia tau tias yuav muaj ntau dhau. Yog hais tias lub xov tooj ntawm tes tau overloaded, txhua yam kev puas tsuaj tau ua tiav uas tsis tuaj yeem kho, vim tias overloading ua rau deformation mus tas li nyob rau hauv lub flexural element thiab gages, rhuav tshem cov kev ua tib zoo sib npaug uas ua rau kev ua tau zoo rau Interface specifications.
- Thaum nws tuaj yeem ua hluav taws xob rov xoom ntawm lub xov tooj ntawm tes tom qab overload, nws tsis pom zoo vim tias qhov no tsis muaj dab tsi los kho qhov cuam tshuam kev ua haujlwm lossis kev puas tsuaj ntawm cov qauv kev ntseeg.
- Yog hais tias qhov degree ntawm overload tsis hnyav, lub xovtooj ntawm tes yuav siv tau los ntawm tus neeg siv kev txiav txim siab, txawm hais tias qee qhov kev ua haujlwm tsis zoo yuav ua txhaum cov kev qhia tshwj xeeb thiab lub neej voj voog ntawm lub xov tooj ntawm tes yuav raug txo.
Rwb thaiv tsev Resistance Tests
- Rwb thaiv tsev tsis kam, ntaub thaiv npog rau conductors: Txuas tag nrho cov conductors, thiab ntsuas qhov kev tiv thaiv ntawm tag nrho cov nyob ntawm tej thiab cov ntaub thaiv npog nyob rau hauv lub cable.
- Rwb thaiv tsev tsis kam, load cell flexure rau conductors: Txuas tag nrho cov conductors, thiab ntsuas qhov kev tiv thaiv ntawm tag nrho cov nyob ntawm tej thiab hlau lub cev ntawm lub load cell.
- Cov kev ntsuam xyuas tau piav qhia saum toj no tuaj yeem ua tau siv tus qauv ohm meter, txawm hais tias qhov txiaj ntsig zoo tshaj plaws tau txais nrog megohm meter.
- Yog hais tias tsis kam yog tshaj li tus qauv ohmmeter ntau, txog 10 megohms, lub xov tooj ntawm tes yog tej zaum OK. Txawm li cas los xij, qee hom hluav taws xob luv luv tsuas yog thaum siv megohm meter lossis nrog voltages siab dua li feem ntau ohmmeters tuaj yeem muab tau.
- CEEB TOOM: Tsis Siv Neeg Voltage Siab dua 50 VDC lossis 35 VRMS AC los ntsuas cov rwb thaiv tsev tiv thaiv lossis tawg ntawm cov rwb thaiv tsev ntawm cov Gages thiab Flexure yuav tshwm sim. Tsawg Resistance (qis dua 5000 Megohms) Feem ntau tshwm sim los ntawm cov dej noo los yog pinched hlau. Qhov ua rau thiab qhov kev puas tsuaj yuav tsum raug tsim los ntawm lub Hoobkas txhawm rau txiav txim siab tias lub Load Cell yuav raug muab tshem tawm.
Kev Ntsuam Xyuas Hoobkas
- Yog tias lub xov tooj ntawm tes muaj qhov tsis zoo rau cov laj thawj uas tsis yog overload, rov qab mus rau lub Hoobkas kom paub meej kev ntsuas. Kev ntsuam xyuas lub Hoobkas tuaj yeem qhia tau tias lub xov tooj ntawm tes kho tau lossis tsis kho thiab qhov kev kho lossis hloov pauv yuav raug lav.
- Yog tias tsis muaj kev lav phib xaub, tus neeg siv khoom yuav raug tiv tauj nrog tus nqi kho thiab rov ua dua, thiab hnub xa khoom tom qab tau txais kev tso cai ua haujlwm.
- 7418 East Helm Drive, Scottsdale, AZ 85260
- 480.948.5555
- interfaceforce.com
Cov ntaub ntawv / Cov ntaub ntawv
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