2025-08-05
A cikin mulkin kayan masana'antu, 'yan na'uran sun tsaya kan gwajin lokacin kamarermocouples. Wadannan m, na'urori masu santsi na robus sun zama rafin ma'aunin zazzabi a cikin masana'antu da yawa, daga masana'antu silin karfe zuwa injin din Aerospace Injiniya. Amma menene daidai yake sa su saboda haka ba za'a iya lalata ba? Wannan jagorar cikin zurfin ciki zai bincika ilimin kimiya a bayan thermocouples, aikace-aikace na mawuyacin dalilin da yasa suke ci gaba da kasancewa don dacewa da yanayin zafin jiki har ma da mahalli masu tsauri.
Yarjejeniyar Aiki
A Cutarsu, thermocopples suna aiki da sakamako mai duba-abu-a cikin 1821 inda ƙwayoyin cuta biyu suka shiga cikin jabu-rukuni biyu suna haifar da ƙarfin lantarki a tsakaninsu. Lokacin da ɗaya juntuction "an nuna shi da zazzabi" ana auna shi da kuma ɗayan (da "sanyi-sanyi na iya canzawa zuwa yanayin karatun zazzabi.
Wannan ƙira mai sauƙi yana kawar da buƙatar hanyoyin wutar lantarki na waje, yin mag ga therrosopples wanda ya dogara sosai cikin nesa ko haɗari. Ba kamar tsayayyen halittar halittu ba (RTDS), tsauraran su a cikin matsanancin yanayi mai tushe daga sassan karamin motsi da kuma karfi mai karfi.
Mahimman fa'ida
Mashahurin gwiwar ermermopples mai tushe mai tushe daga mahimman fa'idodi biyar:
Misali
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Rubuta K
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Nau'in j
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Rubuta T
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Nau'in r
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Ranama
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-200 ° C zuwa 1,372 ° C
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-40 ° C zuwa 750 ° C
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-270 ° C to 370 ° C
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0 ° C zuwa 1,768 ° C
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Daidaituwa
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± 1.5 ° C ko ± 0.4% na Karatu (Duk wanda ya fi girma)
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± 2.2 ° C ko ± 0.75% na Karatu
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A 0.5 ° C (-40 ° C zuwa 125 ° C); ± 1.0 ° C (125 ° C to 370 ° C)
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± 1.0 ° C (0 ° C to 600 ° C); ± 0.5% (600 ° C zuwa 1,768 ° C)
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Lokacin amsa (T90)
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<1 na biyu (da aka fallasa iyaka)
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<0.5 seconds (an fallasa junction)
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<0.3 seconds (an fallasa junction)
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<2 seconds (sheated)
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Sheath abu
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316 bakin karfe
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Ba bisa alaka 600
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304 bakin karfe
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Na yumbu
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Sheath diamita
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0.5mm zuwa 8mm
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0.5mm zuwa 8mm
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0.25mm zuwa 6mm
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3mm zuwa 12mm
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Tsawon kebul
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M (0.5m zuwa 50m)
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M (0.5m zuwa 50m)
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M (0.5m zuwa 30m)
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M (0.5m zuwa 20m)
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Nau'in mai haɗawa
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Minatarewa (SMPW), Standard (MPJ)
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Minatarewa (SMPW), Standard (MPJ)
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Minature (SMPW)
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Babban Tempic Ceramic
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Tambaya. Ta yaya zan iya amfani da thermocople, kuma sau nawa ake buƙata?
A: Calibtheration ya shafi kwatanta kayan aikin Thermocouple zuwa yanayin da aka sani da aka sani (ta amfani da wanka na daidaituwa ko tanders). Don mahimman aikace-aikace kamar magunguna na magunguna, yakamata ya faru kowane watanni 6. A cikin karancin saiti na buƙata (E.G., HVAC), daidaituwa ta shekara-shekara. Yawancin m masana'antu suna kiyaye daidaito a cikin bayanai dalla-dalla don shekaru 1-3 a ƙarƙashin amfani na yau da kullun, amma mawuyacin yanayi na iya buƙatar ƙarin bincike akai-akai. Koyaushe bi jagororin ISO 9001 don takaddun daidaitawa.
Tambaya: Me ke haifar da rawar jiki, kuma ta yaya za a iya hana shi?
A: Rashin daidaituwa na daidaitawa na ƙarshe daga manyan abubuwa uku: 1) Canje-canje na Metraddals a cikin Wayoyi na Thermocouple saboda tsawan yanayin zafi; 2) gurbatawa daga gas ko taya masu mayar da martani tare da junkyar; 3) Damuwa na inji daga girgizar ruwa ko zafin jiki. Matakan rigakafin sun hada da: Zabi Nazarin Thermocouple don kewayon zazzabi, ta amfani da kebul na kariya a cikin rayuwar da aka zata zata zata (yawanci 80% na darajar LifeSpan don mahimmin aikinta).