Cheebtsam muaj nuj nqi qhia txog qhov kub thiab txias hluav taws xob soldering hlau
Muaj nuj nqi qhia txog qee yam khoom
Tom qab daim duab kos tau tsim, cov kauj ruam tom ntej yog los npaj cov khoom. Lub thermostatically adjustable hluav taws xob soldering hlau yog tsuas yog tswj los ntawm thermocouples thiab integrated circuits. Nws muaj qhov kub tsis tu ncua precision, kho qhov vuam kub thiab lub zog siab engineering yas kov. Cov cuab yeej muaj ob lub diodes dub thiab liab, ib tug soldering hlau tub ntxhais, lub teeb-emitting diode, ib tug thermocouple, ib tug adjustable resistor, ib tug sensor, ib tug HA17358, ob electrolytic capacitors, ib tug hlau zaj duab xis resistor thiab ib tug voltage regulator raj thiab thiaj li nyob. .
Txhua yam khoom muaj nws tus kheej siv: lub adjustable resistor yog siv los kho qhov kub thiab txias, voltage regulator raj thiab hlau zaj duab xis resistor yog siv los tiv thaiv Circuit Court, thiab electrolytic capacitor yog siv los lim thiab hloov AC rau DC. Lub thermocouple yog siv los ntsuas qhov ntsuas kub ntawm cov tub ntxhais hlau soldering, thiab thaum qhov kub ntawm cov tub ntxhais soldering hlau ncav cuag qhov ntsuas kub ntawm qhov kev hloov kho, cov cua sov yuav tsum nres los ntawm nws.
Qhov no yog qhov yuav tsum tau ua kom pom tseeb yog lub hauv paus ntsiab lus ntawm kev ntsuas kub ntawm thermocouple:
Lub hauv paus ntsiab lus ntawm kev ntsuas qhov ntsuas kub ntawm thermocouple:
Thermocouples yog ib qho ntawm feem ntau siv qhov ntsuas kub ntsuas hauv kev lag luam. Nws qhov zoo yog:
① Kev ntsuas qhov tseeb. Vim tias cov thermocouple nyob rau hauv kev sib cuag ncaj qha nrog cov khoom ntsuas, nws tsis cuam tshuam los ntawm qhov nruab nrab nruab nrab.
② Kev ntsuas dav dav. Feem ntau siv cov thermocouples tuaj yeem ntsuas tsis tu ncua ntawm -50 mus rau ntxiv rau 1600 degree, thiab qee qhov tshwj xeeb thermocouples tuaj yeem ntsuas qis li -269 degree (xws li kub-hlau-nickel-chromium) thiab mus txog rau ntxiv 2800 degree ( xws li tungsten-rhenium).
③ Cov qauv yooj yim thiab siv tau yooj yim. Thermocouples feem ntau yog tsim los ntawm ob txoj hlua hlau sib txawv, thiab tsis txwv los ntawm qhov loj thiab qhib. Muaj lub tes tsho tiv thaiv sab nraud, uas yooj yim heev rau siv.
a. Lub hauv paus ntsiab lus ntawm kev ntsuas kub ntawm thermocouple
Weld ob conductors lossis semiconductors A thiab B ntawm cov khoom sib txawv los tsim lub voj kaw. Thaum muaj qhov kub thiab txias sib txawv ntawm ob lub ntsiab lus txuas 1 thiab 2 ntawm cov conductors A thiab B, ib qho hluav taws xob hluav taws xob yog tsim los ntawm ob, yog li tsim ib qho loj thiab me tam sim no hauv Circuit Court. Qhov tshwm sim no hu ua cov nyhuv thermoelectric. Thermocouples siv cov nyhuv no los ua haujlwm.
b. Hom thiab qauv tsim ntawm thermocouples
(1) Hom thermocouples
Feem ntau siv cov thermocouples tuaj yeem muab faib ua ob pawg: tus qauv thermocouples thiab tsis yog tus qauv thermocouples. Tus txheej txheem thermocouple raug xa mus rau cov thermocouple uas lub teb chaws tus qauv qhia txog kev sib raug zoo ntawm cov thermoelectric peev xwm thiab qhov kub thiab txias, tso cai yuam kev, thiab muaj kev sib koom ua ke ntawm cov qauv kawm tiav. Nws muaj qhov sib piv cov cuab yeej rau kev xaiv. Tsis yog-tus qauv thermocouples tsis zoo li cov qauv thermocouples nyob rau hauv cov nqe lus ntawm ntau lossis ntau qhov kev siv, thiab feem ntau tsis muaj lub rooj kawm tiav, thiab feem ntau yog siv rau kev ntsuas hauv qee lub sijhawm tshwj xeeb. Standardized thermocouple
(2) Cov qauv txheej txheem ntawm lub thermocouple Txhawm rau kom ntseeg tau tias kev ua haujlwm ruaj khov thiab ruaj khov ntawm cov thermocouple, nws cov qauv tsim muaj raws li hauv qab no:
① Lub vuam ntawm ob lub electrodes kub uas ua rau lub thermocouple yuav tsum ruaj;
② Ob lub thermal electrodes yuav tsum tau zoo insulated ntawm ib leeg los tiv thaiv luv luv Circuit Court;
③ Kev sib txuas ntawm cov nyiaj them nyiaj thiab qhov kawg ntawm lub thermocouple yuav tsum yooj yim thiab txhim khu kev qha;
④ Lub tes tsho tiv thaiv yuav tsum muaj peev xwm xyuas kom meej tias cov hluav taws xob kub tau raug cais tawm ntawm qhov teeb meem nruab nrab.
c. Temperature Compensation ntawm Thermocouple Cold Junction
Txij li cov ntaub ntawv thermocouple feem ntau kim (tshwj xeeb tshaj yog thaum siv cov hlau zoo), thiab qhov kev ncua deb ntawm qhov ntsuas kub taw tes rau qhov ntsuas yog nyob deb heev, thiaj li yuav txuag tau cov ntaub ntawv thermocouple thiab txo cov nqi, cov nyiaj them nqi hluav taws xob feem ntau yog siv los txuas qhov txias kawg. ntawm lub thermocouple (dawb Terminal) txuas mus rau chav tswj qhov kub thiab txias, thiab txuas mus rau qhov ntsuas qhov ntsuas. Lub luag hauj lwm ntawm lub thermocouple them nyiaj hlau tsuas yog txuas ntxiv cov hluav taws xob kub, kom qhov txias kawg ntawm lub thermocouple txav mus rau qhov ntsuas qhov ntsuas hauv chav tswj. Nws tsis tuaj yeem tshem tawm qhov cuam tshuam ntawm qhov kub thiab txias ntawm qhov kawg ntawm qhov ntsuas kub, thiab tsis muaj qhov cuam tshuam. Yog li ntawd, lwm txoj kev kho yuav tsum tau siv los them cov kev cuam tshuam ntawm qhov ntsuas kub thaum lub caij txias hlws ris kub t {{0}} ≠0 degree .
Thaum siv cov thermocouple them nyiaj xov hlau, nws yog ib qho tsim nyog yuav tsum tau them sai sai rau hom kev sib txuam, qhov polarity tsis tuaj yeem txuas tsis raug, thiab qhov kub ntawm qhov kev sib txuas kawg ntawm cov xaim them nyiaj thiab cov thermocouple yuav tsum tsis pub tshaj 100 degree.
