A cikin na'urorin da ake amfani da wutar lantarki akwai na'urori masu auna firikwensin da ke lura da yanayin sanyi da kuma sarrafa aikin na'urar.Karanta game da abin da na'urorin zafin jiki na zafi, irin nau'in su, yadda aka tsara su da aiki, yadda za a maye gurbin su - karanta a cikin wannan labarin.
Menene firikwensin zafin jiki na PZD?
Na'urar firikwensin zafin jiki na PZD wani yanki ne na tsarin sarrafawa na injin da ke da zafin jiki (mai dumama injin ruwa, PZD), wani abu mai mahimmanci (ma'auni transducer) don auna zafin mai sanyaya.
Ana aika bayanan da aka samu ta amfani da firikwensin zafin jiki zuwa sashin kula da lantarki na Railway, kuma a kan tushensu ana kunna na'urar ta atomatik, ta canza yanayin aiki, na yau da kullun ko rufe gaggawa.Ayyukan na'urori masu auna firikwensin sun dogara da nau'in su da wurin shigarwa a cikin layin dogo.
Nau'i, ƙira da ka'idar aiki na firikwensin zafin jiki
Ana rarraba na'urori masu auna zafin jiki zuwa ƙungiyoyi bisa ga ka'idar aiki da aka shimfiɗa a cikin tushen aikin su, nau'in siginar fitarwa, ƙira da kuma amfani.
Dangane da ka'idar aiki, na'urori masu auna firikwensin sune:
● Resistive - sun dogara ne akan thermistor (thermistor), juriya wanda ya dogara da zafin jiki.Lokacin da yanayin zafi ya canza, juriya na thermistor yana ƙaruwa ko raguwa, ana yin rikodin wannan canjin kuma ana amfani da shi don ƙayyade yawan zafin jiki na yanzu;
● Semiconductor - sun dogara ne akan na'urorin semiconductor (diode, transistor ko wasu), halayen halayen "pn" wanda ya dogara da yanayin zafi.Lokacin da zafin jiki ya canza, halayen halin yanzu-voltage na haɗin "pn" (dogara na halin yanzu akan ƙarfin lantarki) ya canza, ana amfani da wannan canji don ƙayyade yawan zafin jiki na yanzu.
Resistive na'urori masu auna sigina ne mafi sauki da kuma mafi arha, amma domin su aiki wajibi ne a yi amfani da daban-daban ma'auni kewaye, wanda bukatar calibration da daidaitawa.Semiconductor na'urori masu auna firikwensin suna ba da damar kera microcircuits masu zafin zafi tare da haɗaɗɗen da'irar aunawa wanda ke samar da siginar dijital a wurin fitarwa.
Dangane da nau'in siginar fitarwa, akwai nau'ikan firikwensin zafin jiki iri biyu:
● Tare da fitowar siginar analog;
● Tare da fitowar siginar dijital.
Mafi dacewa na'urori masu auna firikwensin su ne waɗanda ke samar da siginar dijital - ba shi da sauƙi ga murdiya da kurakurai, yana da sauƙin aiwatarwa tare da da'irori na zamani na dijital, kuma siginar dijital yana sauƙaƙa daidaita firikwensin don auna tazarar zafin jiki daban-daban kuma zuwa daban-daban. hanyoyin aiki.
Na'urori masu auna firikwensin layin dogo na zamani don galibi an gina su akan tushen microcircuits masu zafin jiki tare da siginar fitarwa na dijital.Tushen irin wannan firikwensin shine akwati na silindi wanda aka yi da ƙarfe mai jure lalata (ko tare da murfin hana lalata), a ciki wanda aka ɗora microcircuit mai zafin zafi.A bayan shari'ar akwai madaidaicin mai haɗa wutar lantarki ko kayan aikin wayoyi yana fitowa tare da haɗin (s) a ƙarshen.An rufe akwati, yana kare guntu daga ruwa da sauran mummunan tasiri.A waje na harka, akwai tsagi don shigar da robar ko siliki O-ring, kuma ana iya amfani da ƙarin gasket.An tsara firikwensin mai tsayayya kamar haka, amma yana da kunkuntar gidaje mai tsawo, a ƙarshensa akwai wani abu mai mahimmanci.
Tsarin layin dogo tare da nunin wuraren shigarwa na zafin jiki da na'urori masu zafi fiye da kima
Ba tare da la'akari da ƙira ba, PZD na'urori masu auna zafin jiki sun kasu kashi uku bisa ga fa'idarsu:
● Na'urori masu auna zafin jiki - ana amfani da su don auna yawan zafin jiki na ruwa mai fita wanda ke gudana daga mai zafi zuwa tsarin sanyaya na sashin wutar lantarki;
● Ƙunƙarar firikwensin zafi - ana amfani da shi don auna yawan zafin jiki na ruwa mai shigowa wanda ke shiga cikin hita daga tsarin sanyaya na sashin wutar lantarki;
● Universal - na iya aiki azaman firikwensin zafin jiki don ruwa mai fita da mai shigowa.
Ana shigar da firikwensin zafin jiki na ruwa mai fita a gefen bututun ruwa mai shaye-shaye na hita, ana amfani da shi ta tsarin sarrafawa don kunna wutar lantarki da kashewa lokacin da wani yanayin zafin injin ya kai (yawanci a cikin kewayon daga 40 zuwa 40). 80 ° C, dangane da zaɓin shirin da yanayin aiki na layin dogo).Tun da ana amfani da wannan firikwensin don saka idanu da sarrafa na'urar, ana kiransa kawai firikwensin zafin jiki.
An shigar da firikwensin zafi a gefen mashigar ruwa na preheater, ana amfani da shi don kashe na'urar ta atomatik lokacin da mai sanyaya ya yi zafi sosai.Idan, saboda dalili ɗaya ko wani, naúrar mai sarrafawa ba ta kashe na'urar zafi lokacin da zafin jiki ya kai sama da 80 ° C, to, ana kunna kewayen kariyar, wanda dole ne ya kashe preheater, yana hana injin daga zafi.
Na'urori masu auna firikwensin duniya na iya aiwatar da ayyukan na'urorin biyu, an shigar da su akan bututun shayewa ko shigar da ruwa, kuma an daidaita su daidai da ayyukan da aka ba su.
A cikin preheaters na zamani, ana amfani da na'urori masu auna firikwensin guda biyu - zazzabi da zafi.Ana ciyar da siginar su zuwa abubuwan da suka dace na sashin kula da layin dogo, yayin da siginar daga na'urar firikwensin zafin jiki (ruwa mai fita) za a iya amfani da shi don nuna bayanai kan nunin na'urar sarrafawa a cikin fasinja / taksi na motar, da kuma Ana iya amfani da sigina daga na'urar firikwensin zafi don sanar da zafi mai zafi.
Zaɓi da maye gurbin na'urori masu auna zafin jiki
Masu dumama na zamani suna da tsarin tantance kansu waɗanda ke sanar da direban rashin aiki na na'urori masu auna zafin jiki tare da sigina akan nunin panel ɗin sarrafawa ko ta hanyar walƙiya LED.A kowane hali, idan ana zargin rashin aiki, ya zama dole don bincika amincin haɗin wutar lantarki da firikwensin - yadda za a yi wannan an nuna a cikin umarnin don aiki da gyaran layin dogo.Idan an gano rashin aiki, yakamata a maye gurbin na'urar firikwensin zafin jiki, in ba haka ba ba za'a iya sarrafa hita akai-akai ba.
Don maye gurbin, ya zama dole a zaɓi na'urori masu auna firikwensin waɗannan lambobi da nau'ikan da aka nuna a cikin umarnin layin dogo.A yau, masana'antun da yawa suna ba da analogues na na'urorin da suka fi shahara, wanda ke sauƙaƙe zaɓin su sosai.Koyaya, lokacin zabar, ba za ku iya amincewa da mai siyarwa a makance ba - kuna buƙatar tabbatar da cewa sabon firikwensin yana da nau'in haɗin da ya dace kuma yana da gasket a cikin kayan.
Ana yin maye gurbin zafin jiki da na'urori masu zafi kamar yadda aka tsara don layin dogo, amma ba tare da la'akari da ƙirar hita ba, wannan aikin dole ne a yi shi kawai a kan injin da ya tsaya tare da tashoshi da aka cire daga baturi kuma bayan cire ruwa daga sanyaya. tsarin.Lokacin shigar da sabon firikwensin, dole ne a lura da polarity na haɗin haɗin lambobin lantarki, kuma bayan cika cikin coolant, iska da tsarin.
Tare da zaɓin da ya dace da maye gurbin na'urar firikwensin zafin jiki, injin injin injin zai yi aiki da aminci kuma daidai a kowane yanayi.
Lokacin aikawa: Agusta-21-2023