Kukana kwa platinamu, komwe kumadziwikanso kuti platinamu kukana kutentha, kukana kwake kudzasintha ndi kutentha. Ndipo mtengo wotsutsa wa kukana kwa platinamu udzawonjezeka nthawi zonse ndi kuwonjezeka kwa kutentha.
Platinum kukana akhoza kugawidwa PT100 ndi PT1000 mndandanda mankhwala, PT100 zikutanthauza kuti kukana kwake pa 0℃ ndi 100 ohms, PT1000 zikutanthauza kuti kukana kwake pa 0℃ ndi 1000 ohms.
Kukaniza kwa Platinum kuli ndi ubwino wotsutsa kugwedezeka, kukhazikika bwino, kulondola kwakukulu, kukana kuthamanga kwapamwamba, etc. Amagwiritsidwa ntchito kwambiri mu zamankhwala, galimoto, mafakitale, mawerengedwe a kutentha, satellite, nyengo, kuwerengera kukana ndi zipangizo zina zotentha kwambiri.
PT100 kapena PT1000 masensa kutentha ndi masensa wamba kwambiri mu makampani ndondomeko. Popeza onsewa ndi masensa a RTD, chidule cha RTD chimayimira "chowunikira kutentha". Choncho, ndi sensa ya kutentha komwe kukana kumadalira kutentha; Pamene kutentha kumasintha, kukana kwa sensa kudzasinthanso. Chifukwa chake, poyesa kukana kwa sensor ya RTD, mutha kugwiritsa ntchito sensor ya RTD kuyeza kutentha.
Masensa a RTD nthawi zambiri amapangidwa ndi platinamu, mkuwa, nickel alloys kapena oxides zitsulo zosiyanasiyana, ndipo PT100 ndi imodzi mwa masensa ambiri. Platinamu ndiye chinthu chodziwika kwambiri pa masensa a RTD. Platinamu ili ndi ubale wodalirika, wobwerezabwereza komanso wotsutsana ndi kutentha. Masensa a RTD opangidwa ndi platinamu amatchedwa PRTS, kapena "platinamu resistance thermometers." Sensa ya PRT yomwe imagwiritsidwa ntchito kwambiri pamakampani opanga njira ndi PT100 sensor. Nambala "100" m'dzina imasonyeza kukana kwa 100 ohms pa 0 ° C (32 ° F) Zambiri pa izo pambuyo pake. Ngakhale kuti PT100 ndiyo yodziwika kwambiri ya platinamu RTD/PRT sensa, pali ena angapo, monga PT25, PT50, PT200, PT500, ndi PT1000 kusiyana kwakukulu pakati pa sensor iyi: pa 0 ° C, yomwe imatchulidwa m'dzina, mwachitsanzo, PT1000 ili ndi kukana kwa 1000 ohms pa 0 ° C coefficient sanatchulidwe, nthawi zambiri ndi 385.
Kusiyana Pakati pa PT1000 ndi PT100 Resistors ndi motere:
1. Kulondola ndi kosiyana: Zomwe zimakhudzidwa ndi PT1000 ndizokwera kuposa za PT100. Kutentha kwa PT1000 kumasintha ndi digiri imodzi, ndipo kukana kumawonjezeka kapena kutsika ndi pafupifupi 3.8 ohms. Kutentha kwa PT100 kumasintha ndi digiri imodzi, ndipo mtengo wotsutsa umawonjezeka kapena umachepetsa pafupifupi 0.38 ohms, mwachiwonekere 3.8 ohms ndi yosavuta kuyeza molondola, kotero kulondola kulinso kwakukulu.
2. Kutentha kwa muyeso ndikosiyana.
PT1000 ndiyoyenera kuyeza kutentha kochepa; PT100 ndiyoyenera kuyeza miyeso yayikulu ya kutentha.
3. Mtengo wake ndi wosiyana. Mtengo wa PT1000 ndi wapamwamba kuposa wa PT100.
Nthawi yotumiza: Jul-20-2023