Kedu ihe bụ thermostat?
Ndị na-achịkwa okpomọkụ nwere ọtụtụ aha dị iche iche, dịka ihe mgbanwe okpomọkụ, ihe nchebe okpomọkụ na ihe njikwa okpomọkụ. Dịka ụkpụrụ ọrụ si dị, enwere ike kewaa ya n'ụdị thermostat nke na-awụlikwa elu, thermostat nke ụdị mmiri mmiri, thermostat nke ụdị nrụgide na thermostat nke ụdị eletrọniki. Na ngwa njikwa ụlọ ọrụ ọgbara ọhụrụ, thermostat dijitalụ bụ ụdị a na-ejikarị eme ihe. Dịka usoro ahụ si dị, enwere ike kewaa ihe njikwa okpomọkụ n'ime ihe njikwa okpomọkụ agbakwunyere na ihe njikwa okpomọkụ modular.
Kedu ihe bụ thermometers?
Ahụ́ a na-eji atụ okpomọkụ bụ ihe na-agbanwe akara okpomọkụ ka ọ bụrụ akara eletriki, a na-etinyekarị ya n'akụkụ nchọpụta nke ihe a na-achịkwa iji nyochaa uru okpomọkụ ya. N'ọhịa nke njikwa ụlọ ọrụ mmepụta ihe, temometa ndị a na-ejikarị eme ihe gụnyere temometa, resistor okpomọkụ, thermistors na sensọ ndị na-anaghị emetụ aka. N'ime ha, atọ mbụ bụ temometa kọntaktị.
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 ejikọtara) na-etolite okirikiri mechiri emechi ma tinye okpomọkụ dị iche iche na nsọtụ njikọ ha abụọ, a na-emepụta ike electromotive n'etiti ọla abụọ ahụ. A na-akpọ okirikiri dị otú ahụ "thermocouple," ebe a na-akpọ ọla abụọ ahụ "elektrọd okpomọkụ," a na-akpọkwa ike electromotive nke na-esi na ya apụta "ike mkpali thermoelectric." A na-amata thermocouples site na oke okpomọkụ ha dị iche iche, nzaghachi okpomọkụ ngwa ngwa, na iguzogide ịma jijiji siri ike.
2. Nguzogide okpomọkụ
Nguzogide okpomọkụ bụ ihe na-agbanwe mgbaàmà okpomọkụ ka ọ bụrụ mgbaàmà eletriki, ụkpụrụ ọrụ ya dabere na njirimara nke mgbanwe iguzogide ígwè na okpomọkụ. N'ụzọ pụrụ iche, ndị na-eguzogide okpomọkụ na-eji ihe onwunwe a nke ígwè ahụ atụ okpomọkụ.
N'ihe gbasara njikwa ụlọ ọrụ mmepụta ihe, ụdị iguzogide okpomọkụ a na-ejikarị eme ihe gụnyere platinum, ọla kọpa na nickel. N'ime ha, iguzogide platinum bụ nke kachasị. Mgbochi okpomọkụ nwere njirimara nke ezigbo usoro okpomọkụ, arụmọrụ kwụsiri ike na oke nkenke n'ọhịa nke okpomọkụ nkịtị. Ya mere, n'ebe a na-etinye ya n'ọrụ nke okpomọkụ dị ala, enweghị mkpọtụ na ihe achọrọ maka oke nkenke, a na-ahọrọkarị iji iguzogide platinum.
3. Onye na-ahụ maka okpomọkụ
Thermistor bụ ihe mejupụtara nke na-agbanwe akara okpomọkụ ka ọ bụrụ akara eletriki, ụkpụrụ ọrụ ya dabere na njirimara nke iguzogide semiconductor na-agbanwe ka okpomọkụ na-agbanwe. N'ụzọ pụrụ iche, thermistors na-eji ihe onwunwe a nke semiconductors atụ okpomọkụ. Ma e jiri ya tụnyere iguzogide okpomọkụ, iguzogide nke thermistor na-agbanwe nke ukwuu na mgbanwe nke okpomọkụ, yabụ oke nha okpomọkụ ya dị warara (-50~350℃).
A na-ekewa Thermistors n'ime thermistors NTC na thermistors PTC. Thermistors NTC nwere ihe na-adịghị mma na okpomọkụ, uru iguzogide ha na-ebelatakwa ka okpomọkụ na-arị elu. Thermistor PTC nwere ihe na-egosi okpomọkụ dị mma, uru iguzogide ya ga-abawanye ka okpomọkụ na-arị elu. N'ihi njirimara okpomọkụ iguzogide ya pụrụ iche, thermistor nwere ọtụtụ ngwa na nchọpụta okpomọkụ, njikwa akpaka, ngwaọrụ eletrọnịkị na mpaghara ndị ọzọ.
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