Cov ntsiab lus kom nco ntsoov thaum tsim thiab debugging PT100 thermal resistors

PT100 thermal resistor yog ib qho ntawm feem ntau siv cov sensors hauv kev lag luam ntawm kev lag luam thiab kev ntsuas kub thiab txias thiab ntsuas qhov tseem ceeb yog cov kev txiav txim siab thiab cov ntsiab lus txheej txheem:
Kuv {. xob tsim thiab xaiv kev txiav txim
1.}} theem kev xaiv qhov tseeb
IEC 751 Txheem:
Chav Kawm A: ± (0.15 Degree + 0.002|t|| t |), haum rau lub chaw soj ntsuam lossis tswj qhov tseeb;
Chav Kawm B: ± (0.30 Degree + 0.005|t|| t |), haum rau kev ntsuas kev lag luam;
Cov chav kawm tshwj xeeb A: ± (0 . 10℃+ 0.0015|t |), kom tau customized.
2. cov khoom siv thiab cov qauv tsim qauv
Kub Sensing Element:
Platinum xaim polity yuav tsum muaj ntau dua los yog sib npaug rau 99.99%, inch 0.02 ~ 0.05mm;
Nyias-Zaj duab xis PT100 (tuab <10μm) muaj cov lus teb ceev (<1s), but poor vibration resistance.
Ntim:
Armored (φ1.5 ~ 8mm) tiv taus siab siab (30MPA), kev tawm tsam;
Ceramic packaging is suitable for high temperature (>800 DEGREE) tab sis gragile .
3.} txhuas txoj kev
Ob-xaim system: tsuas yog tsim nyog rau luv luv (<1m) or low-precision scenarios;
Peb-xaim hluav taws xob: txhim kho qhov tseeb los ntawm cov neeg hlau tsis kam (tsawg dua los yog sib npaug rau 100m);
Four-wire system: eliminate the influence of wire resistance, suitable for long distance (>300m) lossis cov tshuab siab-precision .

2. teeb meem kev mob thiab tiv thaiv kev cuam tshuam
Lub Circuit Court:
Siv cov qhab nia tshaj tawm (xws li Ina128) kom muaj kev cuam tshuam nrog kev cuam tshuam nrog kev cuam tshuam.
Nce chaw yuav tsum tau phim rau cov kev hloov pauv ad converter ntau (xws li {0}}}}}} {{4 {4}
Lim Tsim:
Thib ob-kev txiav txim RC Qis Lim (txiav-tawm zaus 10HZ) tshem tawm cov suab nrov siab ntau;
Ib sab-taw hauv av ntawm cov ntaub thaiv npog txheej (teeb liab pom zoo) .
3. fais fab mov ruaj khov
Cov ripple ntawm tas sij hawm tam sim no xav tau <0 . 1%. Nws raug nquahu kom siv qhov siv hluav taws xob siv (xws li Ref3025);
Lub zog siv hluav taws xob cais tawm ntawm cov teeb liab hauv av kom tsis txhob muaj cov voj kev cuam tshuam hauv av .
III {.} sau ntawv rau kev teeb tsa thiab debugging
1.}} kev ua haujlwm ntawm txoj hauj lwm teeb tsa
Qhov tob yuav tsum muaj: qhov tob tob ntawm ntsuas qhov nruab nrab ntau dua lossis sib npaug ntawm 3 zaug ntawm cov kab yeeb (tsawg kawg 50 hli);
Tsis txhob muaj hluav taws kub cua sov: cia kom deb ntawm cov khoom sov lossis cov chaw kub, thiab txhim kho cov ntaub thaiv cua sov;
Kev co kev tiv thaiv: Siv ib qho kev tawm tsam kev sib cav, thiab cov kev sojntsuam txog kev ua phem yuav tsum tau tshwj tseg cov tsis ntev {}}
2. wiring thiab rwb thaiv tsev kho
Kev Xaiv Hlau:
Peb-xaim / plaub-xaim hluav taws xob yuav tsum tau siv cov xov hlau ntawm tib cov khoom thiab ntev (xws li thaj chaw deb dua lossis sib npaug rau 1.5mm);
Kev tiv thaiv txheej txheej siv tinisns tooj liab braided mesh (Cover) ntau dua los yog sib npaug rau 85%).
Rwb thaiv tsev tsis kam:
Cov tsis kam ntawm lub sensor thiab cov vaj tse> 100mω (500v megohmeter sim);
Cov ntaub ntawv txuas yuav tsum yog ya raws-ntawv pov thawj (xws li coated nrog silicone roj) .
{{03. calibrational thiab ntawv pov thawj
Cov Khoom Siv Benchmark:
Tus Da thermostatic da dej (Qhov tseeb ± 0.01 degree), Standy Platinum Rotinum Rotioninion Tus pas ntsuas kub (sprts);
Xaiv Kev Xaiv Calibration: {{{{{}}℃(100 degree), 100℃(1 Degree (roj da dej) {4}
Kuaj Ntxee:
Laij cov kev ua yuam kev nonlinear (ΔTMAX / ntau), uas yuav tsum tsawg dua lossis sib npaug rau 0.1% FS;
Kev kuaj xyuas qhov tseeb: 5 sib law liag kub nce thiab ntog, nrog kev sib txawv ntawm<0.05℃.
{{04. Cov Teeb Meem thiab Cov Ntsiab Lus
Txhaum dab tsi ua tau kev daws teeb meem
Cov zaub kub tau qis dhau lawm kav hlau tiv thaiv kev ua txhaum cai recalulate cov hlau tsis kam thiab hloov kho cov nyiaj pab me me
Kev ntsuas ntsuas tau hloov kho cov kev cuam tshuam zoo hauv nruab nrog hluav taws xob lossis kev sib tiv tauj kev sib chwv daim thaiv npog thiab txhawb kev ua haujlwm txuas
Tus nqi jumps ntawm qhov kub tsis tu ncua kub nyhuv tus kheej kub nyhuv rau tus kheej (xws li 0.5ma) thiab nce cov kev ntsuas kub tsis sib xws
Tsis Txaus Siab Platinum Hlau Breaky lossis Tib Leeg Sib Koom Tes Tshawb Nrhiav Sensor thiab tswj qhov kub tsawg dua lossis sib npaug ntawm 300℃thaum vuam
Drift tom qab siv platinum xaim xaim xaim xaim lossis rwb thaiv tsev laus hloov cov qauv sib khi thiab siv inert roj puv
{5. debugging cuab yeej thiab cov tswv yim
Kev Txiav Txim Simulator:
Siv lub thawv tiv thaiv mus rau simulate PT1 0 0 tsis kam (xws li 0℃→ 138.5ω);
Txheeb xyuas qhov kev sib txawv ntawm cov ntsuas ntawm cov ntsuas thiab theoretical tus nqi ({. 3 kev kawm tiav).
Cov Ntaub Ntawv Nrhiav Tau Txheej Txheem:
Sau cov ntaub ntawv rau 12 teev thiab saib ntsuas kub txav chaw (yuav tsum tau <0.1℃/ 24h);
Siv matlab / simulink los txheeb xyuas cov suab nrov spectrum .
Thermal Ntsuas Xyuas:
Txheeb xyuas seb puas muaj kev sib cuag nrog cov khoom raug ntsuas (kev hloov kho tau yog tias muaj qhov sib txawv sib txawv> 2 degree).
Vin . Kev tiv thaiv kev tiv thaiv kev pom zoo
Kev ntsuas hluav taws xob tsis tu ncua:
Siv lub ntsuas kub rau kev ntsuas hluav taws xob txhua 6 lub hlis, luv luv txog 3 lub hlis nyob rau hauv ib puag ncig kub;
Tsim cov ntaub ntawv ntsuas thiab sau cov coeffection ntawm txhua kis .
Redundant Configuration:
Nruab dual pt100s ntawm cov ntsiab lus tseem ceeb, coj tus nqi nruab nrab lossis teeb tsa lub tswb ntsuas;
Kho qhov kev sib piv nrhiav tau cov Circuital (xws li kev sib piv los saib voltage mutations) .
Saib Xyuas:
Nruab ib qho kub thiab cov av noo Transmitter ze rau ntawm lub sensor los sau cov chaw ib puag ncig;
Siv 316L stainless hlau sheath nyob rau hauv ib puag ncig corrosive thiab tsuag ib qho kev tawm tsam corrosion tsis tu ncua tsis tu ncua.