Extension Cable Matching Rules rau Pin-Type J Thermocouple thiab Common Wiring Faults
Cov kab txuas txuas tsis sib haum yog qhov zais cia ntawm qhov ntev -lub sij hawm kub drift ntawm tus pin- hom J thermocouple uas yooj yim tsis quav ntsej hauv kev lag luam engineering. Ntau qhov haujlwm tsom mus rau kev xaiv lub cev ntawm lub cev thiab kev teeb tsa tus qauv tab sis siv cov tooj liab zoo tib yam lossis cov nyiaj them tsis sib xws rau cov teeb liab kis. J-hom thermocouple muaj cov yam ntxwv tshwj xeeb ntawm cov teeb liab kis tau tus mob, thiab tsis yog- cov kab sib txuas yuav ua rau muaj qhov sib txawv ntawm qhov ntsuas kub ntxiv, uas ua rau qhov kev ntsuas qhov yuam kev deb dhau ntawm qhov ntsuas qhov ntsuas tus kheej.
J- hom tshwj xeeb extension cables txais yuav hlau- cov ntaub ntawv tsis tu ncua ntawm cov khoom siv hluav taws xob zoo sib xws nrog cov xaim thermocouple, uas tuaj yeem tswj hwm cov yam ntxwv ntawm qhov kub thiab txias ntawm qhov ua haujlwm tag nrho. Cov txheej txheem xa xov hluav taws xob tsis ua kom muaj qhov sib txawv ntxiv, kom ntseeg tau tias muaj tseeb thiab tiag -lub sijhawm kub cov ntaub ntawv xa mus. Cov xov hlau zoo tib yam tooj liab thiab lwm hom thermocouple them cables tsis tuaj yeem ua raws li J-hom thermoelectric hloov pauv piv, thiab qhov kub hloov pauv raws txoj kab thaiv yuav ua rau cov kab mob cab, superposing ntawm cov teeb liab zoo los tsim qhov yuam kev.
Polarity thim rov qab thiab kev xaim tsis raug yog qhov tsis pom tseeb hauv kev xa xov cable. Cov ncej zoo thiab qhov tsis zoo ntawm J- hom txuas txuas ntxiv muaj cov cai nruj heev. Rov qab xaim yuav ua kom muaj qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv, thiab tus nqi yuam kev nce ntxiv nrog rau qhov sib txawv ntawm qhov sib txawv ntawm txoj kab hluav taws xob. Qhov kev ua txhaum no tsis muaj cov yam ntxwv ntawm kev puas tsuaj rau cov khoom siv thiab tsuas tuaj yeem pom los ntawm kev sib piv cov ntaub ntawv thiab kev debugging, yooj yim ua rau ntev - cov txheej txheem tsis tsim nyog.
Kev tiv thaiv tsis zoo hauv av txuas ntxiv cuam tshuam cov teeb liab kev ruaj ntseg ntawm tus pin-hom J thermocouple. Ntev - kis tau tus mob kis tau tus mob yog raug rau kev lag luam electromagnetic cuam tshuam. Ib zaug- xaus grounding ntawm shielded cables tau zoo lim suab nrov, thaum ob -kawg grounding yuav ua rau hauv av voj tam sim no thiab qhia cov teeb liab cuam tshuam tshiab, ua rau cov ntaub ntawv jitter thiab instability.
Qhov yuam kev sib piv ntawm cov kab sib txawv ntawm cov qauv sib txawv rau tus pin-hom J thermocouple yog qhia hauv cov lus hauv qab no:
|
Cable Matching hom |
Full -Range Transmission yuam kev |
Kev tiv thaiv -Kev cuam tshuam muaj peev xwm |
Ntev - Lub Sij Hawm Stability |
|---|---|---|---|
|
J- hom tshwj xeeb shielded extension cable |
Tsawg dua lossis sib npaug li 0.5℃ultra- yuam kev tsawg |
Cov suab nrov zoo heev |
Ntev - kis tau tus mob ntev |
|
Tej yam uas tsis yog -shielded J- hom cable |
0.5℃-1.2℃me ntsis yuam kev |
Kev tiv thaiv tsis zoo - cuam tshuam kev ua haujlwm |
Txaus siab rau ntawm -suab nrov nrov |
|
Tsis sib haum nrog lwm hom kev them nyiaj cable |
2.0℃-4.5℃pom kev sib txawv |
Nruab nrab tiv thaiv - cuam tshuam |
Qhov kub thiab txias drift |
|
Ordinary tooj liab hlau hloov |
Ntau tshaj lossis sib npaug rau 6.0℃qhov kev ua yuam kev loj heev |
Yuav luag tsis muaj kev tiv thaiv - cuam tshuam |
Cov ntaub ntawv tsis raug kiag li |
Engineering txheeb cais qhia tias ntau dua 40% ntawm J-hom thermocouple system yuam kev los ntawm kev sib txuas ntawm cable thiab teeb meem kev teeb tsa. Standardized cable xaiv thiab xa mus yog ib qho tseem ceeb raws li sensor lub cev zoo rau lub zuag qhia tag nrho qhov tseeb ntawm kev ntsuas kub.
Kev ntsuas kub ntsuas qhov system txhawb nqa cov txheej txheem tuaj yeem muab cov txheej txheem ua tiav ntawm J- hom kab mob siab rau thiab cov txheej txheem kev sib txuas lus tshwj xeeb, tshem tawm cov kev sib kis yuam kev zais qhov phom sij thiab ua kom tag nrho cov txheej txheem raug.
