RTDs da kuma Thermocouples | Tushen farko da Applications

RTD da Thermocouples: Mafi Girman Tsarin Jiki

Resistance Temperature Detectors (RTDs) da thermocouples ne kawai abubuwa mafi girma na tsarin jiki. Idan haka, duk da cewa suke yi aiki mai yawa wanda shi ne tsara jiki, suna da tarihin yin aiki daban-daban.

RTD ya gina kan hada da lafiya a kan sarrafa matsalolin elektronikinsa wanda shi ne mai yawa kan mutanen zane a lokacin da jiki yake zama. Amma, thermocouple ya yi aiki a kan Seebeck effect, inda an gina fadada (electromotive force, EMF) a kan takamakon da ke biye masu zane mai yawa, kuma wannan fadada ta nuna farkon jiki.

Kwana hakan, akwai wasu abubuwan da za a iya tsara jiki wa ce thermostats da thermistors. Tsarin jiki, baki daya, suke yi aiki ta haka da tsaron alamar gwamnati—kamar matsaloli ko fadadduka—wanda suka nuna manyan kwakwallo a kan tsarin jiki a cikin yanayi. Misali, a cikin RTD, matsalolin yadda ake zama ta nuna ziyarar jiki, amma a cikin thermocouple, ziyarar fadadduka ta nuna ziyarar jiki.

A nan, zan iya bayyana farkon mafi girma daga cikin RTDs da thermocouples, wanda ke barazan tarihin yin aiki.

Takamakon RTD

RTD na nufin Resistance Temperature Detector. Yana ba da jiki a kan matsalolin elektronikinsa mai yawa. Idan jiki yake zama, matsalolin mai yawa ta zama; amma idan jiki yake rasa, matsalolin ta rage. Wannan matsalolin-jiki mai yawa na iya ba da tsarin jiki mai yawa.

Masu zane da matsalolin-jiki mai yawa na iya faɗa a kan gidajen RTD. Masu zane mafi yawan amfani shine copper, nickel, da platinum. Platinum na a yi a gaba saboda kyakkyawarsa da tsarin jiki mai yawa a kan yankin jiki mai yawa (baki daya -200°C zuwa 600°C). Nickel, idan da aka rage, yana da tsarin jiki mai yawa a kan yankin jiki mai yawa da 300°C, wanda yana rage amfani.

Takamakon Thermocouple

Thermocouple na nufin tsarin jiki mai yawa wanda ke gina fadada a kan farkon jiki mai yawa tunanne Seebeck effect. Yana da biyu masu zane mai yawa da suka ci gaba a kan makaranta (measuring junction). Idan wannan makaranta yake zama, fadada ta zama a kan farkon jiki mai yawa da measuring junction da reference (cold) junction.

Farkon masu zane mai yawa suke nuna farkon yankin jiki mai yawa da output characteristics. Abubuwan da ake amfani da su shine:

• Type J (Iron-Constantan)

• Type K (Chromel-Alumel)

• Type E (Chromel-Constantan)

• Type B (Platinum-Rhodium)

Wannan abubuwan da ake amfani da su suke ba thermocouples suke yi aiki a kan yankin mafi yawa, baki daya dari -200°C zuwa kima 2000°C, wanda yana ba su da karfin amfani a kan yankin mafi yawa. Thermocouples suna a nufin kuma thermoelectric thermometers.

Farkon Mafi Girma Daga RTD da Thermocouple

Kammal

RTDs da thermocouples suke ba da faidadi da manajan mafi girma, wanda ke ba su da karfin amfani a kan abubuwan da dama. RTDs suke a yi amfani a kan yankunan da ke buƙata tsari, kyakkyawa, da lalaɗi, kamar a cikin labaratori da yanayin industrial. Thermocouples suke a yi amfani a kan abubuwan da ke buƙata yankin mafi yawa, yin aiki da tsohon lokaci, da kuma kudin aiki, musamman a cikin yankin mafi yawa. Zan iya zaba daga cikin biyu ba tare da ma'anar aiki, kamar yankin jiki, tsari, lokacin yin aiki, da kuma tushen aiki.