Kev cuam tshuam ntawm electromagnetic cuam tshuam (EMI) yog ib qho ua rau tsis ruaj khov nyeem ntawv dhia dhia hauv ntau- cheeb tsam kub khiav pwm. High- cov kab hluav taws xob tam sim no, kev txhaj tshuaj molding tshuab servo motors, lub rooj vag valve solenoid li qub thiab zaus converters hauv lub rhiav yuav tsim alternating magnetic teb, uas cuam tshuam rau cov tsis muaj zog millivolt-theem thermoelectric signals kis los ntawm analog thermocouples. Cov txheej txheem tiv thaiv sib txawv ntawm cov xov hlau thermocouple tuaj yeem cais cov suab nrov ntawm electromagnetic rau qhov sib txawv, thiab sib piv cov ntaub thaiv npog kom raug raws li cov pwm hluav taws xob layout yog ib qho kev lag luam thiab siv tau zoo los daws cov teeb meem kub ntxhov yam tsis tau hloov kho rau cov khoom siv hluav taws xob kim kim.
Cov qauv siv dav siv ntau tshaj plaws yog ib qho - txheej tooj liab braided shielding. Ib tug ntom tooj liab hlau mesh yog qhwv sab nraum lub thermocouple inner rwb thaiv tsev txheej, tsim ib tug kaw hlau cais txheej ntawm lub teeb liab hlau thiab sab nraud electromagnetic teb. Cov tooj liab braided mesh tuaj yeem nqus cov cim sib nqus sib nqus thiab ua qhov cuam tshuam tam sim no rau hauv av kom tsis txhob nkag mus rau hauv cov xaim hluav taws xob sab hauv thiab cuam tshuam cov teeb liab kub. Cov qauv tiv thaiv no yog sib xws nrog K- hom thiab J- hom thermocouples ntawm nruab nrab -sized multi- kab noj hniav kub khiav pwm, uas tuaj yeem lim ntau dua 80% ntawm cov pa hluav taws xob cuam tshuam los ntawm lub tshuab hluav taws xob. Cov ntsiab lus tseem ceeb ntawm kev teeb tsa ntawm ib qho - txheej thaiv thaiv yog ib qho - xaus grounding: tsuas yog txuas cov thaiv thaiv npog rau hauv av davhlau ya nyob twg ntawm qhov ntsuas kub, thiab cov pwm ntsaws qhov kawg yuav tsum khaws cov txheej thaiv thaiv thiab tsis muaj av. Muab ob npaug rau- xaus grounding yuav tsim lub voj hauv av kaw ntawm cov pwm hlau thiab lub txee tswj, ua kom muaj peev xwm sib txawv ntxiv cuam tshuam thiab ua rau qhov kub thiab txias drift, uas yog ib qho kev ua haujlwm tsis raug hauv kev cob qhia xov.
Muab ob npaug rau- txheej thaiv kev sib xyaw yog siv rau siab - cuam tshuam cov pwm puag ncig xws li puv - hluav taws xob txhaj tshuaj molding tshuab thiab ntau -valve gate electromagnetic cylinder layouts. Cov qauv ntxiv ib txheej txheej aluminium ntawv qhwv ntawm lub hauv paus thermoelectric hlau thiab sab nrauv tooj liab braided mesh. Cov ntawv ci txhuas thaiv qhov siab- zaus electromagnetic yoj hluav taws xob, thiab sab nrauv tooj liab braided mesh absorbs qis- zaus hloov chaw sib nqus teb cuam tshuam, paub txog tag nrho -frequency band suab filtering. Muab ob npaug rau- txheej shielding thermocouple cables yog tuab thiab nyuaj dua ib qho - txheej khoom, yog li lawv feem ntau yog siv rau cov kab ncaj nraim ntawm manifold sab nraud cov kab tawm, thiab hloov tau yooj yim ib leeg- txheej thaiv cov xov hlau raug xaiv rau nqaim dabtsi yog khoov hauv cov pwm phaj. Tus nqi yuav khoom ntawm ob npaug - txheej thaiv kab hluav taws xob yog li 40% siab dua ib zaug - txheej txheej, yog li nws tsuas yog pom zoo rau cov pwm uas muaj teeb meem loj ntev -lub sij hawm kub dhia, tsis txhob rov ua dua cov nqi peev rau cov pwm tsawg- cuam tshuam pwm.
Integrated metal sheath shielding of mineral-insulated probes is the inherent shielding advantage of MI thermocouples. Lub seamless stainless hlau sheath nws tus kheej yog ib tug kaw hlau shielding txheej, uas muaj peev xwm kiag li cais lub electromagnetic teb los ntawm kev tiv tauj rau hauv magnesium oxide filling thiab hlau hlau. Yog li ntawd, lub caij nplooj ntoos hlav bayonet MI probes ntsia hauv manifolds thiab nozzles tsis tshua muaj kev cuam tshuam cov teeb liab ntawm qhov kev paub, thiab feem ntau kub dhia ua txhaum yog los ntawm qhov tsis muaj kev tiv thaiv kab hluav taws xob sab nraum lub phaj pwm. Vim li no, txawm tias qhov kev sojntsuam nws tus kheej muaj kev tiv thaiv kev ua haujlwm, cov xaim tawm yuav tsum tseem yuav tsum tau nruab nrog braided shielding cables kom tsis txhob cuam tshuam los ntawm cov xaim hluav taws xob.
Tshwj xeeb los tiv thaiv- cuam tshuam kev ua kom zoo tshaj plaws tsim rau ultra- cov pwm precision muaj xws li twisted khub thermocouple hlau qauv. Cov kab hluav taws xob zoo thiab qhov tsis zoo yog nruj nreem sib npaug ntawm qhov sib npaug, uas tuaj yeem tiv thaiv qhov cuam tshuam ntawm lub zog hluav taws xob tsim los ntawm cov chaw sib nqus sab nraud ntawm ob lub xov hlau raws li, txo qis kev cuam tshuam cov teeb liab amplitude los ntawm qhov chaw. Twisted khub + ib zaug - txheej shielding composite qauv yog tus qauv configuration ntawm thermocouples rau kev kho mob thiab hluav taws xob nyias- phab ntsa kub khiav pwm, xyuas kom meej tias qhov kub thiab txias tus nqi yog tswj nyob rau hauv ± 0.8℃txawm nyob rau hauv ntom ntau - hlau thaiv ib puag ncig.
Hauv kev hloov pauv ntawm kev cob qhia tiag tiag, thaum ntsib qhov kub tsis tu ncua dhia tsis ua haujlwm, cov kws tshaj lij tsis tas yuav hloov pauv digital thermocouple modules ncaj qha nrog tus nqi siab. Lawv tuaj yeem ua ntej hloov cov kab hluav taws xob uas tsis muaj hluav taws xob zoo tib yam nrog ib qho - txheej braided shielding xov hlau, cais cov teeb liab xaim routing channel los ntawm lub tshuab cua sov siab -tam sim no lub hwj chim xaim nrog qhov sib nrug ntawm ntau tshaj 30mm, thiab nruj me ntsis siv ib zaug - xaus grounding ntawm shielding txheej. Ntau tshaj 90% ntawm electromagnetic cuam tshuam qhov kub thiab txias teeb meem tuaj yeem daws tau tag nrho los ntawm cov nqi qis no -tus nqi shielding qauv txuam thiab xaim qauv hloov kho, zoo heev txo cov pwm hloov pauv peev ntawm kev txhaj tshuaj molding tuam txhab.
