RTD Switch

Mano nesimbi kushandura zvavo panyama ehupfumi pasi pokudzora tembiricha iri zvinowanzoshandiswa zvishandiso. Saka, Somuenzaniso, Platinum kuramba lämpömittari anoshandisa resimbi pfuma kuwedzera ayo zvemagetsi nemishonga pamwe kuwedzera tembiricha. Somuenzaniso, pana T = 0 ^C. Platinum ine resistivity 100 ohms.

Nemishonga Thermometer - a kudzora meter, izvo transmits kuti controller chiratidzo kuitika impedance pakati Switch kutaura navo. The controller kurongedza humboo uye anovatuma kuti SCADA hurongwa, apo opareta anogona nechekare kuona mamiriro tembiricha iri mukugadzira kwacho. A nemishonga lämpömittari chinoshandiswa sezvo makemikari uye zvokuimba kugadzirwa.

Switch Magadzirirwo nyore. Copper nemishonga lämpömittari unotora neshamwari nhatu, mbiri iyo dzakavharika mumwe, uye wechitatu - nhamba, ine nemishonga 120 ohms. kubatanidza-waya matatu kwava kunyanya, kunyange varipo kunze. The waya kubva mudziyo kudzora anofanira kudzivirirwa kubva yechitatu-party chipingaidzo. Hazvifaniri vakaisa pamwe nemagetsi waya uye anofanira kudzivirirwa.

Uchishandisa redunhu iri sezvinotevera: RTD - chipingamupinyi - the zvaitika kudzora hurongwa. The mudziyo akatasva ari muridzo unoridzirwa, muitiro mbiru, kushandiswa tembiricha kuyerwa mu mabheyaringi kushanda pombi. The RTD basa vane mwero uye akarurama chaizvo kuverengwa ayo zvichisiyana chaiko kunonyanyisa pamusoro 0,7 inegumi.

Sezvo magadzirirwe mudziyo mumwe pacharo zvakadai, somunhu nemishonga lämpömittari, kune chokuita zvakananga kudziyisa kuchinjwa kubva svikiro kuti resistor, ipapo installation ichinge kufungwa uye nzvimbo Switch. Muridzo unoridzirwa inofanira insulated, pane imwe pfungwa svikiro kuyerera mwero inofanira maximized. Kukanganisa ari kuyerwa kunogona kuderedza vachinja mafungiro Switch tsvimbo urefu kuti dhayamita TC. Pane Zvicharerukira, nani uchava mugumisiro. The kunyudza udzamu inofanira dzaona uye mamiriro ezvinhu kupisa kutapurirana svikiro kuti kuyerwa. Somuenzaniso, mune mukuru-kupisa runyararo zvakadai chiutsi kana mvura inofanira kupfuudza 1.5 nguva zvinoshingaira kureba nemishonga lämpömittari mudziyo.

"Thermowell" kutanga kuisa panguva kugadzwa zviri kusarudzwa panzvimbo. mhando iyi anodzivirira ruoko, akaronga zviite disassembly ari mudziyo, kuti Switch inogona kutsiviwa pasina kumbomira muitiro. Sezvo kuwanda tembiricha chipimo iri kuwanda 200 600 Celsius, unodzivirira ruoko yakaitwa kubva Stainless simbi. Kana kushandiswa chisimba acidic kana zvinhu runyararo liner zvemapuranga chaiwo polymer sezvamunoita nemishonga akayera svikiro.

Nemishonga thermometers anobudiswa munyika dzakawanda pasi pose. The inozivikanwa zvikuru yokutevedzera: American "Wika", Russian "Metran" uye European "Endress Hauser". mano aya refu mwero rakavimbika. Havasi chete kukwanisa wokushandura munhu tembiricha kugara, asiwo kuti kuyerwa panguva kukurumidza kuchinja tembiricha.