Waya wolipirira ndi mawaya awiri okhala ndi gawo loteteza lomwe lili ndi mtengo wofanana ndi mphamvu ya thermoelectromotive ya thermocouple yofanana pa kutentha kwina (0~100°C). Zolakwika chifukwa cha kusintha kwa kutentha pamalo olumikizirana. Mkonzi wotsatira adzakufotokozerani zomwe waya wolipirira wa thermocouple uli, ntchito ya waya wolipirira wa thermocouple, ndi gulu la waya wolipirira wa thermocouple.
1. Kodi waya wolipirira thermocouple ndi wamtengo wanji?
Waya wolipirira wamba umafuna kuti maelekitirodi abwino ndi oipa akhale ofanana ndi zinthu zabwino ndi zoipa za thermocouple. Ma thermocouple amtundu wa K ndi nickel-cadmium (yabwino) ndi nickel-silicon (yabwino), kotero malinga ndi muyezo, mawaya olipirira a nickel-cadmium-nickel-silicon ayenera kusankhidwa.
2. Kodi ntchito ya waya wolipirira thermocouple ndi yotani?
Ndikokulitsa ma electrode otentha, kutanthauza, kumapeto kozizira kwa thermocouple yoyenda, ndikulumikiza ndi chida chowonetsera kuti apange njira yoyezera kutentha. Tengani muyezo wa dziko lonse wa IEC 584-3 "Thermocouple Part 3 - Compensation Wire". Zogulitsazi zimagwiritsidwa ntchito makamaka muzipangizo zosiyanasiyana zoyezera kutentha, ndipo zakhala zikugwiritsidwa ntchito kwambiri mu mphamvu ya nyukiliya, mafuta, mankhwala, zitsulo, magetsi ndi madipatimenti ena.
3. Kugawa mawaya obwezera ndalama a thermocouple
Mwachidule, imagawidwa m'mitundu yowonjezereka ndi mitundu yolipirira. Kapangidwe ka mankhwala ka waya wa alloy wa mtundu wowonjezera ndi kofanana ndi ka thermocouple yogwirizana, kotero mphamvu ya thermoelectric nayonso ndi yofanana. Imayimiridwa ndi "X" mu chitsanzo, ndipo kapangidwe ka mankhwala ka waya wa alloy wa mtundu wolipirira ndi kofanana. Ndi yosiyana ndi thermocouple yogwirizana, koma pamlingo wake wogwirira ntchito kutentha, mphamvu ya thermoelectric ili pafupi ndi mtengo wodziwika wa mphamvu ya thermoelectric ya thermocouple yogwirizana, yomwe imayimiridwa ndi "C" mu chitsanzo.
Kulondola kwa malipiro kumagawidwa m'magulu a giredi wamba ndi giredi yolondola. Cholakwika pambuyo pa malipiro a giredi yolondola nthawi zambiri chimakhala theka lokha la giredi wamba, yomwe nthawi zambiri imagwiritsidwa ntchito m'malo omwe ali ndi zofunikira kwambiri pakuyeza molondola. Mwachitsanzo, pa mawaya olipira a manambala omaliza a S ndi R, kulekerera kwa giredi yolondola ndi ±2.5°C, ndipo kulekerera kwa giredi wamba ndi ±5.0°C; pa mawaya olipira a manambala omaliza a K ndi N, kulekerera kwa giredi yolondola ndi ±1.5°C, kulekerera kwa giredi wamba ndi ±2.5℃. Mu chitsanzo, giredi wamba siinalembedwe, ndipo giredi yolondola imawonjezedwa ndi "S".
Kuchokera ku kutentha kogwirira ntchito, imagawidwa m'magulu awiri: kugwiritsa ntchito wamba ndi kugwiritsa ntchito kosatentha. Kutentha kogwirira ntchito wamba ndi 0 ~ 100 °C (zina ndi 0 ~ 70 °C);
Kuphatikiza apo, pakati pa waya mutha kugawidwa m'ma waya olumikizirana a single-strand ndi multi-core (waya wofewa), ndipo mutha kugawidwa m'ma waya wamba komanso otetezedwa malinga ndi ngati ali ndi gawo loteteza, komanso pali mawaya otetezerana a mabwalo otetezeka omwe amaperekedwa ku zochitika zoteteza kuphulika.