Kedu ihe bụ thermostat?
Ndị na-ahụ maka okpomọkụ nwere aha dị iche iche, dị ka mgbanaka njikwa okpomọkụ, ihe nchekwa okpomọkụ na ndị na-ahụ maka okpomọkụ. Dị ka ụkpụrụ na-arụ ọrụ si dị, ọ nwere ike kewaa n'ime ụdị jumps, mmiri mmiri ụdị thermostat, mgbali ụdị thermostat na electronic ụdị thermostat. N'ime akụrụngwa njikwa ụlọ ọrụ ọgbara ọhụrụ, temometa dijitalụ bụ ụdị a na-ejikarị eme ihe. Dị ka ihe owuwu ahụ si dị, enwere ike kewaa onye na-ahụ maka okpomọkụ ka ọ bụrụ njikwa okpomọkụ agbakwunyere na onye na-ahụ maka ọnọdụ okpomọkụ.
Gịnị bụ temometa?
Ahụ na-enyocha okpomọkụ bụ ihe na-agbanwe mgbaàmà okpomọkụ ka ọ bụrụ mgbaàmà eletriki, ma na-etinyekarị ya na akụkụ nchọpụta nke ihe a na-achịkwa iji nyochaa uru okpomọkụ ya. N'ebe a na-achịkwa ụlọ ọrụ mmepụta ihe, temometa ndị a na-ejikarị agụnye thermocouples, thermal resistors, thermistors na ndị na-abụghị kọntaktị. N'ime ha, atọ mbụ bụ kọntaktị temometa.
1. Thermocouple
Ụkpụrụ nke nha okpomọkụ maka thermocouples dabere na mmetụta Seebeck (mmetụta thermoelectric). Mgbe ọla abụọ nke ihe dị iche iche (na-abụkarị ndị na-eduzi ma ọ bụ semiconductor, dị ka platinum-rhodium, nickel-chromium-nickel-silicon na ihe ndị ọzọ jikọtara ọnụ) na-emepụta akaghị emechi ma tinye okpomọkụ dị iche iche na njedebe njikọ abụọ ha, a na-emepụta ike electromotive n'etiti. ọla abụọ ahụ. A na-akpọ loop dị otú ahụ "thermocouple," ebe a na-akpọ ọla abụọ ahụ "electrode thermal," na ihe na-esi na ya pụta bụ ihe a na-akpọ "thermoelectric motive force." A na-eji thermocouples mara oke okpomọkụ ha dị obosara, nzaghachi okpomọkụ ngwa ngwa, yana nguzogide ịma jijiji siri ike.
2. Nguzogide okpomọkụ
Nguzogide okpomọkụ bụ ihe na-agbanwe mgbaàmà okpomọkụ ka ọ bụrụ mgbaàmà eletriki, ụkpụrụ ọrụ ya na-adaberekwa na njirimara nke nguzogide ígwè na mgbanwe okpomọkụ. Kpọmkwem, thermal resistors na-eji uru nke a onwunwe nke metal tụọ okpomọkụ.
Na njikwa ụlọ ọrụ, ụdị nguzogide okpomọkụ a na-ejikarị gụnyere platinum, ọla kọpa na nickel. N'ime ha, nguzogide platinum bụ nke a na-ahụkarị. The thermal eguzogide nwere àgwà nke ọma okpomọkụ linearity, kwụsiri ike ịrụ ọrụ na elu nkenke na ubi nke nkịtị okpomọkụ. Ya mere, na mpaghara ngwa ngwa nke okpomọkụ na-agafeghị oke, ọ dịghị vibration na ihe dị elu chọrọ, a na-ahọrọkarị iji nguzogide platinum.
3. Thermistor
Thermistor bụ ihe na-agbanwe mgbama okpomọkụ ka ọ bụrụ akara ọkụ eletrik, ụkpụrụ ọrụ ya dabere na njirimara nke nguzogide semiconductor na-agbanwe na okpomọkụ. Kpọmkwem, thermistors na-eji ohere a nke semiconductors tụọ okpomọkụ. E jiri ya tụnyere thermal eguzogide, nguzogide nke thermistor na-agbanwe nke ukwuu na mgbanwe nke okpomọkụ, ya mere, okpomọkụ nha nso nso dị warara (-50 ~ 350 ℃).
Thermistors na-ekewa n'ime NTC thermistors na PTC thermistor. Ndị na-ekpo ọkụ NTC nwere ọnụọgụ okpomọkụ na-adịghị mma, na uru nkwụsị ha na-ebelata ka okpomọkụ na-abawanye. PTC thermistor nwere ọnụọgụ okpomọkụ dị mma, yana uru nguzogide ya ga-abawanye na mmụba nke okpomọkụ. N'ihi njirimara okpomọkụ na-eguzogide ya pụrụ iche, thermistor nwere ọtụtụ ngwa na nchọpụta okpomọkụ, njikwa akpaka, ngwaọrụ eletrọnịkị na mpaghara ndị ọzọ.
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