Cov txheej txheem tseem ceeb rau kev txiav txim siab seb lub thermocouple txias junction compensator puas ua haujlwm tau zoo nrog kev kuaj pom, ntsuas teeb liab, thiab kev sib piv, yog li xyuas qhov tseeb thiab ruaj khov ntawm nws cov nyiaj them poob haujlwm los ntawm ntau yam -s mus kom ze. Lub tshuab ua haujlwm tsis zoo tuaj yeem qhia txog qhov sib txawv ntawm ob peb degrees Celsius rau hauv qhov ntsuas kub ntawm qhov ntsuas -ib qho teeb meem uas tshwj xeeb tshaj yog nyob rau hauv ib puag ncig uas muaj qhov kub thiab txias hloov pauv, xws li huab cua caij ntuj sov hauv cheeb tsam Wuhan.
I. Kev soj ntsuam pom qhov pom thiab qhov xwm txheej (tsis muaj qhov ntsuas)
Qhov taw qhia teeb thiab tso saib qhov screen xwm txheej
Kev coj cwj pwm zoo: Lub hwj chim taw qhia lub teeb tseem ci tsis tu ncua, thiab tsis muaj lub tswb ua txhaum; Yog hais tias muaj ib qho screen LCD, qhov ntsuas kub ntawm qhov sib txuas txias yuav tsum nyob ruaj khov nyob rau hauv chav tsev kub (piv txwv li, 20-30 ° C).
Cov teeb liab txawv txav: flashing tswb, tso saib cov lus xws li "Err" lossis "OL," lossis qhov hloov pauv tsis zoo nyob rau hauv qhov txias txias txias nyeem ntawv (xws li dhia ntawm 25 ° C mus rau 40 ° C, tom qab ntawd mus rau 15 ° C).
Installation Environment Inspection
Xyuas kom tseeb tias lub tshuab hluav taws xob tau nruab rau hauv qhov chaw uas yog ** zoo- qhov cua thiab nyob deb ntawm qhov chaw kub thiab muaj zog electromagnetic cuam tshuam;
Kos lub thawv thaiv kab hluav taws xob rau cov cim qhia ntawm cov dej nkag los yog xeb, thiab tshuaj xyuas cov xov hlau txuas rau kev puas tsuaj lossis kev sib txuas xoob.
Kev sib txuas hluav taws xob
Xyuas kom tseeb tias qhov hluav taws xob muab hluav taws xob ua tau raws li qhov yuav tsum tau ua (feem ntau 24V DC);
Paub meej tias qhov polarity ntawm cov xaim them nyiaj yog qhov tseeb (cov xaim liab sib raug rau qhov zoo ntawm cov thermocouple).
II. Multimeter Test Method (Tshuaj xyuas cov teeb liab tawm)
Kauj Ruam 1: Ntsuas qhov tso zis hluav taws xob sib haum mus rau qhov txias txias txias * *
Fais fab ntawm lub compensator thiab cia nws sov li 30 feeb;
Siv ib tug precision digital multimeter (nrog rau kev daws teeb meem ntawm ≤ 1μV) los ntsuas qhov voltage ntawm lub compensator cov zis terminals;
Sau qhov ntsuas kub tam sim no (T_cold), tom qab ntawd sab laj nrog lub rooj sib tham thermocouple (xws li, rau Hom K thermocouples) kom tau txais qhov ntsuas theoretical them voltage [E(T_cold, 0°C)];
Kev Txiav Txim Siab: Yog tias qhov ntsuas ntsuas qhov ntsuas hluav taws xob sib txawv ntawm tus nqi theoretical los ntawm tsis pub ntau tshaj ± 5μV (rau Hom K thermocouples), cov cuab yeej raug txiav txim siab ua haujlwm ib txwm.
Piv txwv: Ntawm qhov ntsuas kub ntawm 25 ° C, qhov kev them nyiaj theoretical muaj peev xwm rau Hom K thermocouple yog 1017 μV. Yog tias qhov ntsuas tus nqi poob qis hauv thaj tsam ntawm 1015 txog 1022 μV, nws raug txiav txim siab nyob rau hauv qhov qub.
Kauj Ruam 2: Kev ntsuas kub qhov sib txawv teb
Tuav lub vaj tsev nyob nrog koj txhais tes rau ob peb feeb kom sov nws, simulating qhov txias txias - qhov kub thiab txias;
Saib seb qhov tso zis muaj peev xwm nce linearly hauv cov lus teb;
Yog tias tsis muaj kev hloov pauv, lossis yog tias qhov kev nyeem ntawv hloov pauv hnyav, nws qhia tau tias muaj kev ua txhaum ntawm lub sensor sab hauv lossis circuitry.
III. System-Level Functional Verification (Cov Txheej Txheem Ua Haujlwm)
Txoj kev | Cov kauj ruam ua haujlwm | Kev coj cwj pwm | Teeb meem txawv txav |
Txias-Txoj Kev Sib Txuas Kub Sib Piv | Siv tus qauv Pt100 sensor lossis tus ntsuas kub infrared los ntsuas qhov ntsuas kub ntawm qhov chaw them nyiaj, tom qab ntawd muab piv nrog tus nqi them tus nqi tso tawm. | Kev sib txawv ≤ ± 0.5 ° C | Kev sib txawv> ± 1 ° C; qhia tias muaj peev xwm txias -kev sib tshuam sensor drift. |
Compensation Enable/Disable Comparison Method | Nyob rau hauv qhov chaw tshav kub ruaj khov, lov tes taw cov nyiaj them poob haujlwm thiab tom qab ntawd rov-pab nws; soj ntsuam qhov kev hloov pauv ntawm kev nyeem ntawv kub. | Hloov pauv tus nqi ≈ Tam sim no txias- qhov kub thiab txias (piv txwv li, +25°C) | Tsis muaj kev hloov pauv, lossis qhov hloov pauv ntawm tus nqi tsis sib xws; qhia tias kev them nyiaj tsis ua haujlwm. |
Multi-Point Stability Test | Nruam cov ntaub ntawv ntsuas kub rau 8 teev. | Kev hloov pauv ≤ ± 0.3 ° C, tsis muaj kev taw qhia drift. | Ib qho maj mam nce lossis nqis qis tshwm sim; qhia tias muaj peev xwm them nyiaj drift. |
Kev Pom Zoo Kev Lag Luam: Ua cov kev kuaj xyuas ib ntus ua ke nrog cov txheej txheem ntsuas qhov ntsuas tau teev tseg hauv A11 txhawm rau tiv thaiv kev cuam tshuam ntawm kev cuam tshuam los ntawm kev tsim khoom.
IV. Txoj kev hloov pauv (Kev Tshawb Fawb Kawg)
Hloov qhov kev xav tias qhov tsis raug them nyiaj rov qab nrog tus paub txog - cov khoom zoo ntawm tus qauv tib yam;
Yog hais tias lub kaw lus ntsuas qhov kub thiab txias rov qab mus rau qhov qub, tus neeg them nyiaj thawj zaug yog qhov tsis zoo;
Txoj kev no tsim nyog rau kev ceev ceev ntawm - qhov teeb meem ntawm qhov chaw thiab tshwj xeeb tshaj yog muaj txiaj ntsig thiab txhim khu kev qha thaum kho xwm txheej xwm txheej cuam tshuam nrog cov kab tsim khoom tseem ceeb.
