- Siv cov txheej txheem qhia sub-khoom los qhia txog cov txheej txheem kev ua haujlwm ntawmload cell. Cov txheej txheem ib txwm siv yog siv cov khoom lag luam sub-index. Qhov zoo dua yog tias lub ntsiab lus ntawm lub cev yog qhov tseeb, thiab nws tau siv ntau xyoo, thiab ntau tus neeg paub txog nws. Peb tam sim no teev nws cov khoom tseem ceeb raws li hauv qab no: * Tus nqi qis tshaj ntawm qhov hnyav uas tau muab los ntawm cov chaw tsim khoom muaj peev xwm ntsuas.
* Rated tso zis (rhiab heev)
Qhov sib txawv ntawm cov teeb liab tso zis ntawm lub sensor thaum lub ntsuas ntsuas tau thov thiab thaum tsis muaj load. Txij li thaum lub teeb liab tso zis ntawm lub xov tooj ntawm tes muaj feem xyuam rau qhov kev siv hluav taws xob excitation, chav tsev ntawm cov zis tawm tau qhia hauv mV / V. Thiab hu nws rhiab heev.
* rhiab heev kam rau ua
Qhov feem pua ntawm qhov sib txawv ntawm qhov tseeb ruaj khov tso zis ntawm lub sensor thiab qhov sib thooj nominal rated tso zis rau lub nominal rated tso zis. Piv txwv li, qhov tseeb cov zis tawm ntawm lub xov tooj ntawm tes yog 2.002mV / V, thiab cov qauv ntsuas cov zis yog 2mV / V, tom qab ntawd nws qhov kev ua siab ntev yog: ((2.002-2.000) / 2.000) * 100% = 0.1%
*Nhauv-linear
Qhov siab tshaj qhov sib txawv ntawm txoj kab ncaj nraim txiav txim siab los ntawm qhov tso zis tus nqi tsis muaj load thiab cov nqi tso tawm ntawm qhov ntsuas load thiab ntsuas qhov nkhaus ntawm kev nce load yog feem pua ntawm cov nqi tso zis.
* LagTua siab ntev
Maj mam thauj khoom los ntawm tsis muaj load mus rau qhov ntsuas load thiab ces maj mam unload. Qhov feem pua ntawm qhov sib txawv ntawm qhov siab tshaj plaws ntawm kev thauj khoom thiab tshem tawm cov khoom tawm ntawm tib lub thauj khoom taw tes rau cov nqi tso tawm.
* Rov ua duaEyuam kev
Nyob rau hauv ib puag ncig ib puag ncig, rov rub lub sensor mus rau qhov ntsuas ntsuas thiab tshem tawm nws. Qhov feem pua ntawm qhov sib txawv siab tshaj plaws ntawm cov nqi tso tawm ntawm tib lub sijhawm thauj khoom thaum lub sijhawm thauj khoom mus rau qhov ntsuas cov zis.
*Crov
Thaum lub load tsis tu ncua (feem ntau yog coj raws li qhov ntsuas load) thiab lwm yam kev ntsuas tsis hloov, qhov feem pua ntawm cov khoom siv hluav taws xob hloov pauv lub sijhawm mus rau qhov ntsuas cov zis.
* ZeroOua utput
Raws li kev pom zoo voltage excitation, tus nqi tso zis ntawm lub sensor yog feem pua ntawm cov zis tso zis thaum tsis muaj load.
* rwb thaiv tsevRkev cuam tshuam
Tus nqi DC tsis kam ntawm lub sensor Circuit Court thiab elastomer.
*InputRkev cuam tshuam
Thaum lub teeb liab tso zis davhlau ya nyob twg yog qhib Circuit Court thiab lub sensor tsis loaded, tus nqi impedance ntsuas los ntawm lub hwj chim mov excitation input davhlau ya nyob twg.
* Tso zis impedance
Lub impedance ntsuas los ntawm lub teeb liab tso zis davhlau ya nyob twg thaum lub hwj chim excitation input davhlau ya nyob twg yog luv luv thiab lub sensor tsis loaded.
* KubCnyiaj txiagRnpau taws
Nyob rau hauv qhov ntsuas kub no, qhov ntsuas qhov ntsuas qhov tso zis thiab xoom qhov sib npaug yog nruj nruj kom tsis txhob muaj ntau tshaj qhov teev tseg.
* Kev cuam tshuam ntawmZeroTemperature
Kev hloov pauv hauv xoom tshuav tshwm sim los ntawm kev hloov pauv ntawm qhov kub thiab txias. Feem ntau, nws yog qhia raws li ib feem pua ntawm qhov kev tshuav nyiaj li cas hloov mus rau qhov ntsuas cov zis thaum qhov kub hloov pauv los ntawm 10K.
* Kev cuam tshuam ntawmRatedOua utputTemperature
Qhov kev hloov pauv ntawm cov zis tawm los ntawm kev hloov pauv ntawm qhov kub thiab txias.
Feem ntau, nws tau qhia raws li feem pua ntawm cov khoom ntsuas ntsuas ntawm qhov ntsuas cov zis hloov pauv tshwm sim los ntawm txhua 10K hloov hauv qhov kub thiab txias.
* Kev ua haujlwmTemperatureRnpau taws
Lub sensor yuav tsis tsim kev puas tsuaj mus tas li nyob rau hauv ib qho ntawm nws cov kev ua tau zoo tsis nyob rau hauv qhov kub thiab txias
2. Cov ntsiab lus siv hauv "International Recommendation No. OIML60". Raws li 1992 tsab ntawm "OIML No. 60 International Proposal", xa mus rau cov txheej txheem tshiab ntawm "JJG669--90 Load Cell Verification Regulations":
* Thauj khoomCua ellOua utput
Qhov ntsuas tau (ntau) tau los ntawm kev hloov pauv ntawm cov khoom thauj khoom tuaj yeem ntsuas.
* Kawm tiavValue uaLua oadCua ell
Qhov luaj li cas ntawm ib feem tom qab ntsuas qhov ntau ntawm cov load cell muab faib ua qhov sib npaug.
* Kev pov thawjDivisionValue uaLua oadCell (V)
Rau lub hom phiaj ntawm qhov raug muab qhab nia, qhov ntsuas tus nqi ntawm lub xov tooj ntawm tes qhia hauv pawg loj yog siv nyob rau hauv qhov kev xeem ntawm lub xov tooj ntawm tes.
* CovMyam tsawgVkev tsim khoDivisionValue uaLua oadCell (Vmin)
Kev ntsuas ntau ntawm cov khoom thauj khoom tuaj yeem muab faib los ntawm qhov ntsuas qhov ntsuas qhov tsawg kawg nkaus.
* Yam tsawg kawg nkausStaticLoad (Fsmin)
Qhov tsawg kawg nkaus tus nqi ntawm cov huab hwm coj uas tuaj yeem siv rau hauv lub xov tooj ntawm tes tsis pub dhau qhov ua yuam kev siab tshaj plaws.
* Ntau tshajWyim
Tus nqi siab tshaj plaws uas tuaj yeem siv rau hauv lub xov tooj ntawm tes tsis pub dhau qhov ua yuam kev siab tshaj plaws.
* Tsis-linear (L)
Qhov sib txawv ntawm cov txheej txheem calibration nkhaus ntawm lub load cell thiab txoj kab ncaj nraim.
* LagEyuam kev (H)
Qhov siab tshaj qhov sib txawv ntawm cov zis nyeem ntawm lub xov tooj ntawm tes thaum siv tib theem ntawm kev thauj khoom; ib qho ntawm lawv yog cov txheej txheem kev nyeem ntawv pib los ntawm qhov tsawg kawg nkaus static load, thiab lwm yam yog qhov rov qab nyeem ntawv pib los ntawm qhov siab tshaj qhov hnyav.
* Kev nkag siab (Cp)
Thaum lub load tsis tas li thiab tag nrho ib puag ncig ib puag ncig thiab lwm yam kev hloov pauv kuj tseem nyob tas li, qhov kev hloov pauv ntawm cov khoom tso tawm tag nrho ntawm lub xov tooj ntawm lub sijhawm.
* Yam tsawg kawg nkausStaticLua oadOua utputRkev kho mobPLant (CrFsmin)
Ua ntej lub load yog thov 1. Thaum qhia txog cov kev tsis ua hauj lwm ntawm lub load cell nrog rau cov sub-khoom index sawv cev txoj kev, cov tsoos txoj kev yog siv cov khoom sub-index. Qhov zoo dua yog tias lub ntsiab lus ntawm lub cev yog qhov tseeb, thiab nws tau siv ntau xyoo, thiab ntau tus neeg paub txog nws. Peb tam sim no teev nws cov khoom tseem ceeb raws li hauv qab no: * Tus nqi qis tshaj ntawm qhov hnyav uas tau muab los ntawm cov chaw tsim khoom muaj peev xwm ntsuas.
* RatedOutput (rhiab heev)
Qhov sib txawv ntawm cov teeb liab tso zis ntawm lub sensor thaum lub ntsuas ntsuas tau thov thiab thaum tsis muaj load. Txij li thaum lub teeb liab tso zis ntawm lub xov tooj ntawm tes muaj feem xyuam rau qhov kev siv hluav taws xob excitation, chav tsev ntawm cov zis tawm tau qhia hauv mV / V. Thiab hu nws rhiab heev.
* rhiab heev kam rau ua
Qhov feem pua ntawm qhov sib txawv ntawm qhov tseeb ruaj khov tso zis ntawm lub sensor thiab qhov sib thooj nominal rated tso zis rau lub nominal rated tso zis. Piv txwv li, qhov tseeb cov zis tawm ntawm lub xov tooj ntawm tes yog 2.002mV / V, thiab cov qauv ntsuas cov zis yog 2mV / V, tom qab ntawd nws qhov kev ua siab ntev yog: ((2.002-2.000) / 2.000) * 100% = 0.1%
*Nhauv-linear
Qhov siab tshaj qhov sib txawv ntawm txoj kab ncaj nraim txiav txim siab los ntawm qhov tso zis tus nqi tsis muaj load thiab cov nqi tso tawm ntawm qhov ntsuas load thiab ntsuas qhov nkhaus ntawm kev nce load yog feem pua ntawm cov nqi tso zis.
* LagTua siab ntev
Maj mam thauj khoom los ntawm tsis muaj load mus rau qhov ntsuas load thiab ces maj mam unload. Qhov feem pua ntawm qhov sib txawv ntawm qhov siab tshaj plaws ntawm kev thauj khoom thiab tshem tawm cov khoom tawm ntawm tib lub thauj khoom taw tes rau cov nqi tso tawm.
* Rov ua duaEyuam kev
Nyob rau hauv ib puag ncig ib puag ncig, rov rub lub sensor mus rau qhov ntsuas ntsuas thiab tshem tawm nws. Qhov feem pua ntawm qhov sib txawv siab tshaj plaws ntawm cov nqi tso tawm ntawm tib lub sijhawm thauj khoom thaum lub sijhawm thauj khoom mus rau qhov ntsuas cov zis.
*Crov
Thaum lub load tsis tu ncua (feem ntau yog coj raws li qhov ntsuas load) thiab lwm yam kev ntsuas tsis hloov, qhov feem pua ntawm cov khoom siv hluav taws xob hloov pauv lub sijhawm mus rau qhov ntsuas cov zis.
* ZeroOua utput
Raws li kev pom zoo voltage excitation, tus nqi tso zis ntawm lub sensor yog feem pua ntawm cov zis tso zis thaum tsis muaj load.
* rwb thaiv tsevRkev cuam tshuam
Tus nqi DC tsis kam ntawm lub sensor Circuit Court thiab elastomer.
*InputRkev cuam tshuam
Thaum lub teeb liab tso zis davhlau ya nyob twg yog qhib Circuit Court thiab lub sensor tsis loaded, tus nqi impedance ntsuas los ntawm lub hwj chim mov excitation input davhlau ya nyob twg.
* Tso zis impedance
Lub impedance ntsuas los ntawm lub teeb liab tso zis davhlau ya nyob twg thaum lub hwj chim excitation input davhlau ya nyob twg yog luv luv thiab lub sensor tsis loaded.
* KubCnyiaj txiagRnpau taws
Nyob rau hauv qhov ntsuas kub no, qhov ntsuas qhov ntsuas qhov tso zis thiab xoom qhov sib npaug yog nruj nruj kom tsis txhob muaj ntau tshaj qhov teev tseg.
* Kev cuam tshuam ntawmZeroTemperature
Kev hloov pauv hauv xoom tshuav tshwm sim los ntawm kev hloov pauv ntawm qhov kub thiab txias. Feem ntau, nws yog qhia raws li ib feem pua ntawm qhov kev tshuav nyiaj li cas hloov mus rau qhov ntsuas cov zis thaum qhov kub hloov pauv los ntawm 10K.
* Kev cuam tshuam ntawmRatedOua utputTemperature
Qhov kev hloov pauv ntawm cov zis tawm los ntawm kev hloov pauv ntawm qhov kub thiab txias.
Feem ntau, nws tau qhia raws li feem pua ntawm cov khoom ntsuas ntsuas ntawm qhov ntsuas cov zis hloov pauv tshwm sim los ntawm txhua 10K hloov hauv qhov kub thiab txias.
* Kev ua haujlwmTemperatureRnpau taws
Lub sensor yuav tsis tsim kev puas tsuaj mus tas li nyob rau hauv ib qho ntawm nws cov kev ua tau zoo tsis nyob rau hauv qhov kub thiab txias
2. Cov ntsiab lus siv hauv "International Recommendation No. OIML60". Raws li 1992 tsab ntawm "OIML No. 60 International Proposal", xa mus rau cov txheej txheem tshiab ntawm "JJG669--90 Load Cell Verification Regulations":
* Thauj khoomCua ellOua utput
Qhov ntsuas tau (ntau) tau los ntawm kev hloov pauv ntawm cov khoom thauj khoom tuaj yeem ntsuas.
* Kawm tiavValue uaLua oadCua ell
Qhov luaj li cas ntawm ib feem tom qab ntsuas qhov ntau ntawm cov load cell muab faib ua qhov sib npaug.
* Kev pov thawjDivisionValue uaLua oadCell (V)
Rau lub hom phiaj ntawm qhov raug muab qhab nia, qhov ntsuas tus nqi ntawm lub xov tooj ntawm tes qhia hauv pawg loj yog siv nyob rau hauv qhov kev xeem ntawm lub xov tooj ntawm tes.
* NyhavSensor * Yam tsawg kawg nkausVkev tsim khoDivisionValue (Vmin)
Qhov ntsuas ntsuas qhov tsawg kawg nkaus tus nqi uas qhov ntsuas lub xov tooj ntawm tes tuaj yeem ntsuas tau.
* Yam tsawg kawg nkausStaticLoad (Fsmin)
Qhov tsawg kawg nkaus tus nqi ntawm huab hwm coj uas tuaj yeem siv rau hauv lub xov tooj ntawm tes tsis pub dhau qhov kev tso cai ntau tshaj qhov yuam kev.
* Ntau tshajWyim
Tus nqi siab tshaj plaws uas tuaj yeem siv rau hauv lub xov tooj ntawm tes tsis pub dhau qhov ua yuam kev siab tshaj plaws.
* Tsis-linear (L)
Qhov sib txawv ntawm cov txheej txheem calibration nkhaus ntawm lub load cell thiab txoj kab ncaj nraim.
* LagEyuam kev (H)
Qhov siab tshaj qhov sib txawv ntawm cov zis nyeem ntawm lub xov tooj ntawm tes thaum tib theem ntawm kev thauj khoom sivd. One ntawm lawv yog cov txheej txheem nyeem pib los ntawm qhov tsawg kawg nkaus static load, thiab lwm yam yog qhov rov qab nyeem ntawv pib los ntawm qhov siab tshaj plaws hnyav.
* Kev nkag siab (Cp)
Thaum lub load tsis tas li thiab tag nrho ib puag ncig ib puag ncig thiab lwm yam kev hloov pauv kuj tseem nyob tas li, qhov kev hloov pauv ntawm cov khoom tso tawm tag nrho ntawm lub xov tooj ntawm lub sijhawm.
* Yam tsawg kawg nkausStaticLua oadOua utputRkev kho mobPLant (CrFsmin)
Qhov sib txawv ntawm qhov tsawg kawg nkaus static load tso zis ntawm lub load cell ntsuas ua ntej thiab tom qab lub load yog thov.
* Rov ua duaEyuam kev (R)
Nyob rau hauv tib lub load thiab tib ib puag ncig tej yam kev mob, qhov sib txawv ntawm cov zis nyeem ntawm lub load cell tau los ntawm ob peb sib law liag thwmsim.
* CovInfluence uaTemperature ntawm lubMyam tsawgStaticLua oadOtso zis (Fsmin)
Qhov kev hloov ntawm qhov tsawg kawg nkaus static load output vim qhov kev hloov ntawm ambient kub.
* Kev cuam tshuam ntawmTemperature rauOua utputSkev xav (St)
Kev hloov pauv hauv cov zis rhiab heev vim qhov hloov pauv ntawm qhov kub thiab txias.
* Kev ntsuasRlub siab ntawm Lua oadCua ell
Qhov ntsuas (zoo) tus nqi ntau nyob rau hauv qhov ntsuas qhov ntsuas yuav tsis tshaj qhov siab tshaj qhov yuam kev.
* Kev nyab xeebLxyaumLua oad
Qhov siab tshaj plaws uas tuaj yeem siv rau hauv lub cell load. Nyob rau lub sijhawm no, lub xov tooj ntawm tes yuav tsis tsim cov drift mus tas li tshaj li tus nqi teev nyob rau hauv cov nqe lus ntawm kev ua tau zoo.
* Kev cuam tshuam ntawmTemperature thiabHumidity rauMyam tsawgStaticLua oadOtso zis (FsminH)
Qhov kev hloov ntawm qhov tsawg kawg nkaus static load output vim qhov kev hloov ntawm qhov kub thiab av noo.
* Kev cuam tshuam ntawmTemperature thiabHumidity rauOua utputSkev xav
Cov kev hloov pauv hauv cov zis rhiab heev vim qhov hloov pauv ntawm qhov kub thiab txias.
Tsis tas li ntawd, nyob rau hauv "JJG699-90 Load Cell Verification Regulations", ib qho kev ntsuas tseem tau teev tseg, uas yog
* Yam tsawg kawg nkausLoad (Fmin)
Qhov loj tus nqi ze tshaj rau qhov tsawg kawg nkaus static load ntawm lub xov tooj ntawm tes uas lub zog tsim khoom tuaj yeem ua tiav.
Nws yog qhov tseeb vim tias qhov ntsuas ntsuas ntsuas ib txwm ua ntawm lub dynamometer, thiab nws yog qhov nyuaj rau ncaj qha ntsuas qhov ua tau zoo ntawm qhov tsawg kawg nkaus static load point. Ib qho ntxiv, "OIML60 International Proposal" yog tsim tshwj xeeb rau kev thauj cov hlwb, thiab nws qhov chaw pib rau kev ntsuam xyuas ntawm lub hlwb load yog hloov mus rau cov kev xav tau ntawm cov cuab yeej ntsuas.
, tom qab ntsuas qhov sib txawv ntawm qhov tsawg kawg nkaus static load tso zis ntawm lub load cell.
* Rov ua duaEyuam kev (R)
Nyob rau hauv tib lub load thiab tib ib puag ncig tej yam kev mob, qhov sib txawv ntawm cov zis nyeem ntawm lub load cell tau los ntawm ob peb sib law liag thwmsim.
* CovInfluence uaTemperature ntawm lubMyam tsawgStaticLua oadOtso zis (Fsmin)
Qhov kev hloov ntawm qhov tsawg kawg nkaus static load output vim qhov kev hloov ntawm ambient kub.
* Kev cuam tshuam ntawmTemperature rauOua utputSkev xav (St)
Kev hloov pauv hauv cov zis rhiab heev vim qhov hloov pauv ntawm qhov kub thiab txias.
* Kev ntsuasRlub siab ntawmLua oadCua ell
Qhov ntsuas (zoo) tus nqi ntau nyob rau hauv qhov ntsuas qhov ntsuas yuav tsis tshaj qhov siab tshaj qhov yuam kev.
* Kev nyab xeebLxyaumLua oad
Qhov siab tshaj plaws uas tuaj yeem siv rau hauv lub cell load. Nyob rau lub sijhawm no, lub xov tooj ntawm tes yuav tsis tsim cov drift mus tas li tshaj li tus nqi teev nyob rau hauv cov nqe lus ntawm kev ua tau zoo.
* Kev cuam tshuam ntawmTemperature thiabHumidity rauMyam tsawgStaticLua oadOtso zis (FsminH)
Qhov kev hloov ntawm qhov tsawg kawg nkaus static load output vim qhov kev hloov ntawm qhov kub thiab av noo.
* Kev cuam tshuam ntawmTemperature thiabHumidity rauOua utputSkev xav
Cov kev hloov pauv hauv cov zis rhiab heev vim qhov hloov pauv ntawm qhov kub thiab txias.
Tsis tas li ntawd, nyob rau hauv "JJG699-90 Load Cell Verification Regulations", ib qho kev ntsuas tseem tau teev tseg..
* Yam tsawg kawg nkausLoad (Fmin)
Qhov loj tus nqi ze tshaj rau qhov tsawg kawg nkaus static load ntawm lub xov tooj ntawm tes uas lub zog tsim khoom tuaj yeem ua tiav.
Nws yog qhov tseeb vim tias qhov ntsuas ntsuas ntsuas ib txwm ua ntawm lub dynamometer, thiab nws yog qhov nyuaj rau ncaj qha ntsuas qhov ua tau zoo ntawm qhov tsawg kawg nkaus static load point. Ib qho ntxiv, "OIML60 International Proposal" yog tsim tshwj xeeb rau kev thauj cov hlwb, thiab nws qhov chaw pib rau kev ntsuam xyuas ntawm lub hlwb load yog hloov mus rau cov kev xav tau ntawm cov cuab yeej ntsuas.
Post lub sij hawm: Mar-30-2023