Yuav ua li cas Environmental Conditions Influence Thermocouple Performance?
Cov xwm txheej ib puag ncig hauv cov chaw txhaj tshuaj molding cuam tshuam rau qhov tseeb ntawm thermocouple, ruaj khov, thiab kev pabcuam lub neej. Cov xwm txheej xws li qhov kub thiab txias, av noo, kev co, hluav taws xob cuam tshuam, plua plav, thiab cov khoom ua kom txias ua rau tag nrho cov kev cuam tshuam sensor. Thermocouples uas ua tau zoo nyob rau hauv kev tswj chaw kuaj tej zaum yuav degrade sai nyob rau hauv lub Hoobkas pem teb. Kev nkag siab txog kev cuam tshuam ib puag ncig tso cai rau kev tiv thaiv zoo dua, xaiv, thiab teeb tsa.
Kub ambient kub nyob ze ntawm lub tshuab txhaj tshuaj ua kom cov thermocouple aging. Ntev raug rau hluav taws xob kub ua rau oxidation ntawm cov alloys sab hauv thiab degrades cable rwb thaiv tsev. Qhov no ua rau ua ntej drift thiab tsis ua haujlwm, tshwj xeeb tshaj yog nyob rau hauv cov thermocouples tsis ntsuas rau qhov kub thiab txias.
Cov av noo thiab noo noo ua rau muaj teeb meem loj hauv qhov chaw kub kub. Cov dej los ntawm cov kab txias, pwm ntxuav, los yog condensation nkag mus rau cov thermocouples tsis zoo, txo cov rwb thaiv tsev tiv thaiv thiab tsim cov hauv av. Cov dej noo nyob rau hauv cov ntxhia- cov kab hluav taws xob rwb thaiv tsev ua rau lub suab nrov, kev sib tsoo, thiab qhov tshwm sim luv luv.
Kev vibration los ntawm lub tshuab ua haujlwm, hydraulic actuators, thiab cov khoom noj khoom haus qaug zog thermocouple junctions thiab cables. Sij hawm dhau mus, micro- txav mus los ua txhaum cov neeg siv hluav taws xob sab hauv lossis xoob kev sib txuas, ua rau muaj kev cuam tshuam tsis sib xws. Cov kab hluav taws xob uas tsis muaj kev ruaj ntseg tshwj xeeb tshwj xeeb rau kev co - ua rau tsis ua hauj lwm.
Electromagnetic cuam tshuam los ntawm cov motors, heaters, drives, thiab high-voltage cables distorts low-the thermocouple signals. Cov kab hluav taws xob uas tsis muaj kev tiv thaiv tuaj tos lub suab nrov, ua rau qhov ntsuas kub tsis ruaj khov, cov duab flickering, thiab lub tswb tsis tseeb. Kev tiv thaiv kom raug thiab routing txo cov teebmeem no.
Plua plav, roj, thiab resin paug nyob rau hauv connectors thiab probes, degrading thermal contact thiab hluav taws xob conductivity. Residue ua raws li kev rwb thaiv tsev, ua rau cov lus teb qeeb thiab tsim kev ntsuas qhov yuam kev. Cov kab mob kis kab mob ua rau muaj kev tiv thaiv, ua rau cov teeb liab tsis ruaj khov.
Coolant to thiab tshuaj lom neeg los ntawm cov pwm ntxuav los yog tso cov neeg ua hauj lwm corrode thermocouple sheaths thiab connectors. Cov tshuaj ua kom cov rwb thaiv tsev thiab tawm tsam cov hlau, ua kom tsis muaj zog hauv cov cheeb tsam hnyav.
Kev hloov pauv huab cua thiab cua txias ua rau muaj qhov hloov pauv kub uas cuam tshuam rau kev nyeem ntawv thermocouple nyob ze ntawm cov pwm. Tsis zoo insulated sensors yuav ntes ambient txias es tsis muaj tseeb steel kub, ua rau overheating.
Thermal cycling ntawm ntau lawm thiab kaw ua rau rov nthuav dav thiab contraction, stressing cov ntaub ntawv thermocouple. Nquag hloov ntawm kub thiab txias ua rau qaug zog thiab drift.
Hauv cov ntsiab lus, ib puag ncig xws li cua sov, av noo, kev co, hluav taws xob cuam tshuam, kev sib kis, tshuaj lom neeg, airflow, thiab thermal cycling cuam tshuam rau kev ua haujlwm ntawm thermocouple. Siv ruggedized, kaw, shielded, thiab corrosion- tiv thaiv tsim pab tswj kev ruaj ntseg hauv kev xav tau ib puag ncig kev lag luam.
