Mai suna wani Radiation Pyrometer?

Za a Radiyashin Pyrometer?

Takaitaccen Radiyashin Pyrometer

Radiyashin pyrometer, wanda ba ta fi siffar tashar jiki, ya kiyaye hanyar tsariyar radiyashin na gida da mutum ya shafi. Wannan radiyashi ana iya cewa yana nuna tashar jiki da kuma alamar ido - yadda ake magance wannan alama a kan gida mai kyau.

• Q shine radiyashin na gida

• ϵ shine alamar ido (0 < ϵ < 1)

• σ shine konstantin Stefan-Boltzmann

• T shine tashar jiki na gida a Kelvin

Mafi Girman Radiyashin Pyrometer

• Lens ko kuma mirro yana haɗa radiyashin na gida daga abu a kan damar yadda ake saurari, inda zai haɗa shi zuwa bayanan da za a iya bincike.

• Dammar yadda ake saurari wanda ya haɗa radiyashin na gida zuwa shiga shaida. Wannan zai iya kasance resistance thermometer, thermocouple, ko kuma photodetector.

• Karamin bayanin da za a iya nuna ko rubuta tashar jiki a kan shiga shaida. Wannan zai iya kasance millivoltmeter, galvanometer, ko kuma digital display.

Abubuwan Radiyashin Pyrometer

Akwai mafi girma biyu na radiyashin pyrometer: fixed focus type da variable focus type.

Fixed Focus Type Radiyashin Pyrometer

Fixed-focus type radiyashin pyrometer yana da tube mai tsawon kasa da aperture mai kadan a wurin mulki da kuma mirro mai kusa a farkon mulki.

Thermocouple mai sauƙi yana da ita a kan mirro mai kusa a fadin da ya fi kusa, inda radiyashin na gida daga abu ya haɗa shi zuwa hot junction na thermocouple. EMF da aka fara a kan thermocouple ya kunshi a kan millivoltmeter ko kuma galvanometer, wanda zai iya canza da tashar jiki. 

Al'amuran wannan nau'in pyrometer shine ba zai buƙata a canza don ibada daban-daban daga abu zuwa karamin bayanin, domin mirro ya haɗa radiyashi zuwa thermocouple. Amma, wannan nau'in pyrometer yana da yawan hakilin bayanin da ya fi kusa da yake iya samun tashin rufo ko lens.

Variable Focus Type Radiyashin Pyrometer

Variable focus type radiyashin pyrometer yana da mirro mai kusa da take iya canza da steel mai kyau.

Radiyashin na gida daga abu ya haɗa shi a kan mirro, sannan ya haɗa shi zuwa blackened thermojunction wanda ya faruwa da disk mai kadan mai copper ko silver da kuma wires forming the junction are soldered. Imagin da aka sani daga abu zai iya samun shi a kan disk through an eyepiece and a central hole in the main mirror. 

Faduwar mirro mai kusa ya canza har zuwa disk. Heating of the thermojunction due to the thermal image on the disc produces an emf that is measured by a millivoltmeter or a galvanometer. Al'amuran wannan nau'in pyrometer shine yana iya bincike tashar jiki a kan yawan kudanci mai kyau da kuma zai iya bincike invisible rays from radiation. Amma, wannan nau'in pyrometer yana buƙatar canza da kalmomin masu ma'ana don bayanai masu inganci.

Al'amuran

• Sun zai iya bincike tashar jiki mai yawa daga 600°C, inda wasu sensors zai iya yaɗu ko dan wasa.

• Ba su buƙace buƙatar siffar tashar jiki, wanda zai iya sauya contamination, corrosion, ko interference.

• Su na da fast speed of response and high output.

• Su na iya zama da muhimmanci a kan atmospheres mai korosi ko electromagnetic fields.

Dabbobi

• Wadannan devices sun zama da errors due to non-linear scales, emissivity variations, ambient changes, and contaminants on optical parts.

• Su buƙata calibration and maintenance for accurate readings.

• Su zai iya zama da miliyan da kuma murabba a yi.