Laser Thermometer: isimiso isinyathelo. Laser thermometer akude (isithombe)

Izinga lokushisa nesilinganiso kungenzeka contact futhi akude. ezivame kakhulu thermocouples, thermometer nezinzwa Resistor edinga ukuxhumana into, isb. K. Ukulinganisa lokushisa lalo. Bakwenza kancane, kodwa azibizi.

Izinzwa Indawo engalapho ulinganise amaza okushisa avela into, ukunikeza imiphumela ngokushesha, futhi ivame ukusetshenziselwa ukucacisa lokushisa ezihambayo nemizimba umile e vacuo futhi ezingafinyeleleki ngenxa ulaka imvelo, izimfanelo ukuma noma nokuvikeleka usongo. Intengo amadivayisi enjalo kuqhathaniswa eliphezulu, nakuba kwezinye izimo ifaniswe uxhumane amadivaysi.

ezinombala ofanayo thermometry

Monochrome indlela yokunquma Ukubengezela Imininingwane isebenzisa wavelength kusengaphambili. Implementations isukela elula iphenya ngesandla nge nesilinganiso akude kumadivayisi eyinkimbinkimbi ephathekayo ngokuvumela ukuba kanyekanye ukubona into futhi lokushisa yayo ukufundwa afakwe inkumbulo noma kokuwaphrinta. Izinzwa elimile zivezwa imitshina elula nge encane ilungiselelo electronics akude, futhi ephezulu amandla nge PID ukulawula-namadivayisi akude. Fiber optic, laser kuhloswe, amanzi Ukupholisa, khona ukubonisa futhi isithwebuli - ozikhethela ongakhetha inqubo ukuqapha nokulawula izinhlelo.

Ukucushwa, ukuhlunga Spectral, izinga lokusebenza ezahlukene, yokukhanya, Ukusabela isikhathi nokukhanya into yizici ezibalulekile ezithinta ukusebenza futhi kufanele ngokucophelela kubhekwa enqubeni Ukukhetha.

Inzwa kungaba elula ezimbili-wire, futhi eziyinkimbinkimbi bafake ukumelana kudivayisi ephezulu ukuzwela.

Ukukhethwa impendulo Spectral futhi lokushisa ububanzi elihlobene ne-nesilinganiso imisebenzi ethize. yamaza iDemo asetshenziselwa lokushisa eliphezulu eside - I-ongaphakeme. Uma izinto ibonakala, isibonelo, uplastiki namabhodlela, kubalulekile uzkovolnovaya zokuhlunga. Ibhande ukumuncwa CH polyethylene ifilimu kuyinto 3,43 .mu.m. Ukuba Wedwa bohlu kuleli banga lula kathisha we emissivity. Ngokufanayo, izinto ingilazi-like babe opaque ngesikhathi wavelength ka 4.6 microns, okuvumela ukunquma ngokunembile izinga lokushisa kwamanzi ingilazi. 1-4 microns likhipha endaweni kwenza ukwenza nesilinganiso nge ukuhlolwa ukuvuleka cleaner nokucindezelwa emakamelweni. Alternative - ukusetshenziswa ye-fiber-optic.

Yokukhanya namandla RTT azilutho ezimweni eziningi, njengoba emkhakheni buka ubukhulu 3 cm at ibanga 50 cm nesikhathi impendulo ngaphansi kuka-1 s kwanele. Ukuze encane noma okusheshayo ezihambayo into ngakanye iba ezidingekayo endaweni encane (ubukhulu 3mm) noma ngaphezulu ezincane (0.75 mm) indawo izilinganiso. Kude kuhloswe (3-300 m) zidinga ukulungiswa optical, njengoba inkambu esezingeni umbono kuba sikhulu kakhulu. Kwezinye izimo, le ndlela isetshenziswa a radiometry ezimbili wave. fibre Optical evumela ukuba abadedisele electronics kusuka ezindaweni ezinodlame, ukuqeda umphumela umsindo futhi ukuxazulula inkinga lokufinyelela.

Laser thermometer ngokuyisisekelo kulawulwa ku uhla 0.2-5.0 nge impendulo isikhathi. Impendulo esheshayo kungandisa umsindo isignali futhi umphumela kancane ku ukuzwela. Lapho lokungeniswa Ukushisa kudinga impendulo ngokushesha, futhi elihambayo - kancane impendulo.

Monochrome IR thermometer ilula futhi lisetshenziswa ezimweni lapho imikhiqizo eliphezulu ukwakha control lokushisa kubaluleke kakhulu.

embaxambili wavelength thermometry

Ukuze uthole olunye ulwazi imisebenzi eyinkimbinkimbi, lapho ngokuphelele nesilinganiso ukunemba kubalulekile, futhi lapho umkhiqizo eba sebunzimeni ngokomzimba noma amakhemikhali, futhi osebenza ezimbili wave radiometry. Umqondo kwavela ekuqaleni 1950, futhi izinguquko zamuva ekuklanyweni hardware kanye ukwandisa umkhiqizo walo futhi banciphise izindleko.

Indlela liqukethe ekulinganiseni kwabantu amandla Spectral at yamaza ezimbili ezihlukene. Amazinga into ingafundwa ngokuqondile insimbi, uma emissivity ka for wavelength ngalinye okufanayo. Izinkomba kuyoba njalo ngisho noma emkhakheni buka ingxenye ivinjiwe izinto kuqhathaniswa abandayo, ezifana nothuli, wire izikrini ewindini grey futhi angenisa ukukhanya. indlela Imfundiso ilula. Uma bobabili wavelength Ukubengezela kuyafana (okwesikhathi grey umzimba), Coefficient ekushayweni sinciphile ubuhlobo iba wakhona lokushisa.

Dual-wavelength laser thermometer isetshenziswa umkhakha nocwaningo njengendlela, inzwa elula esiyingqayizivele elingase ukunciphisa iphutha nesilinganiso.

Ngaphezu kwalokho, izinga lokushisa multiwavelength isethelwe izinto okungelula imizimba empunga, Coefficient ukumuncwa okuyinto siyahlukahluka wavelength. Kulezi zimo sidinga ukuhlaziya eningiliziwe impahla ebusweni izici ku ubuhlobo Coefficient wavelength, izinga lokushisa futhi amakhemikhali ukwakheka we ebusweni. Ngala idatha kungenzeka ukwakha algorithm ukubala kuye emisebeni Spectral at banemibono engafani ngokuthi lokushisa.

imithetho yokulinganisa

Ukuze ukuhlola ukunemba nesilinganiso umsebenzisi kumele bazi lokhu okulandelayo:

• Izinzwa IR abazalwa ukuhlukanisa imibala.
• Uma amaqabunga shiny ke idivayisi uyomisa hhayi sasikhipha kuphela kodwa futhi amandla kubonakala.
• Uma into esobala, kubalulekile IR zokuhlunga (isib ingilazi opaque 5 microns).
• Ngo eziyisishiyagalolunye kweziyishumi amacala nesilinganiso ngokuphelele eqondile liyadingeka. kwekufundza kanyentana kanye nokuntuleka sokuchema sizonikeza ngokunemba kunesidingo. Lapho izinguquko Ukubengezela nokucubungula kunzima, kufanele uhlale ngesikhathi ezimbili noma multi-wavelength radiometer.

timphawu tesakhiwo

laser non-contact thermometer isebenza isimiso eneji infrared emnyango futhi isignali ophumayo. kudivayisi wesifunda Basic siqukethe lokuqoqa yokukhanya, amalensi, umshini Spectral kanye umtshina njengoba interface zangaphandle. ukucutshungulwa Dynamic Kwenziwa ehlukile, kodwa zingancishiswa ukuthuthukisa, isiginali sinjalo ezishisayo linearization kanye nenguquko. Ezivamile ingilazi yefasitelana isetshenziselwa emisebeni iDemo wave asebenza ngebhethri ngoba Midrange ne-germanium noma ukhethe sulfide ngokuba 8-14 Micron ububanzi, fibre - at yamaza ka 0.5-5.0 microns.

emehlweni

Laser thermometer akude libhekene inkambu umbono (FOV) - control lokushisa usayizi indawo buqamama inikezwe. Ukushintsha ubukhulu yensimu Ukubuka ithunzi elehlayo yoshintsho ibanga phakathi thermometer futhi into yokukala. Inani layo incike nomkhiqizi kanye nomthelela intengo iyunithi. Kube iphethini nge PP kuka-1 mm iphuzu izilinganiso, kanye yokukhanya yesikhathi eside (7 cm at ibanga 9 m). Ukusebenza ibanga akuphazamisi ukunemba kufundwa, uma into igcwalisa indawo nesilinganiso. Umkhawulo isignali ukulahlekelwa kumele singeqi 1%.

kuhloswe

Ezivamile IR thermometer ukukhiqiza izilinganiso ngaphandle amadivaysi ezengeziwe. Lokhu kwamukeleka ukusetshenziswa ne izinto ezinkulu, ezifana iphepha sewebhu, lapho iphuzu ukunemba ayidingekile. Ukuze izinto ezincane noma esikude usebenzisa ugongolo laser. Wadala ezahlukeneyo eziningana ngemva kokubona lezi zilwane laser.

1. Ugongolo offset kusukela eksisi optical. Imodeli elula ukuthi isetshenziswa kumadivayisi nge lesinqumo ongaphakeme ukuba izinto ezinkulu, isb. K. I eduze ukuphambuka likhulu kakhulu.
2. uvumelanise Coaxial. Ungaphambuki eksisi optical. ekulinganiseni indawo isikhungo ngokunembile echaziwe ngasiphi ibanga.
3. laser Dual. Spot ubukhulu esinelebuli amaphuzu amabili, okwenza kungabi nesidingo ukuqagela noma ukubala ububanzi futhi aliholeli amaphutha.
4. isikhombi Isiyingi offset. Ibonisa emkhakheni Ngenxa yobukhulu bayo kanye umngcele wangaphandle.
5. 3-iphuzu pointer coaxial. Ugongolo uhlukaniswe amaphuzu amathathu elikhanyayo emgqeni efanayo. Maphakathi lisho isikhungo indawo, kanye ububanzi elingaphandle izibazi.

Kuhloswe ukunikeza usizo ngempumelelo ngaphansi kokuqondisa thermometer ngokunembile into yokukala.

izihlungi

I thermometer asetshenziswa iDemo wave izihlungi lokushisa eliphezulu izilinganiso (> 500 ° C) futhi eside wavelength izihlungi okushisa aphansi (-40 ° C). Silicon imitshina, isib, amelana nokushisa, futhi inamandla amancane kunciphisa Iphutha nesilinganiso. Okunye izihlungi abakhethayo ezisetshenziswa amafilimu plastic (3.43 microns kanye 7.9 microns), ingilazi (5.1 microns) nangelangabi (3.8 microns).

izinzwa

Izinzwa kakhulu noma Photoelectric ekhiqiza amandla kagesi lapho beshushisa IR ngemisebe, noma photoconductive, ukuze t. E. Ishintsha ukumelana layo ngaphansi isenzo umthombo amandla. Ayashesha, ebucayi kakhulu, ube isisebenzi esamukelekayo lokushisa drift, okungase lunganqotshwa, isibonelo, thermistor lokushisa isinxephezelo wesifunda, automatic zero wesifunda, futhi ukuphakama kwawo namandla awo nokukhawulela Ukuvikelwa isothermal.

Thermometer uchungechunge IR mayelana 100-1000 isignali mV umtshina okukhipha kuyinto isithuthukisi ayizinkulungwane-nesibaya kulawulwa, kuyinto linearized, futhi, ngenxa yalokho, limelela isignali komugqa wamanje noma voltage. Inani layo elikhulu 4-20 ma, ukunciphisa ukuphazamiseka zangaphandle. Lokhu isignali kungenziwa bondliwa kuya RS-232 port noma PID isilawuli, ukubonisa akude noma idivayisi ukurekhoda. Okunye embodiments zisebenzisa isignali:

• ukuvula / ukuvala isibonakaliso;
• isiqongo ukubambelela value;
• adjustable isikhathi impendulo;
• isampula nokubambelela wesifunda.

isivinini

Isikhala seso laser thermometer ine isilinganiso Ukusabela nesikhathi ms 300, nakuba ukusetshenziswa Silicon imitshina singafinyelela ukubaluleka 10 ms. Ngo amathuluzi amaningi impendulo izinguquko isikhathi kuyidambise umsindo angenayo ulungise ukuzwela. Hhayi ngaso sonke isikhathi kudingeka ubuncane Ukusabela isikhathi. Ngokwesibonelo, ngo-lokungeniswa Ukushisa isikhathi kufanele ibe uhla 10-50 ms.

Izici laser thermometer

Etekcity Lasergrip 630 - infrared 2 laser thermometer intengo $ 35,99. Izici:

• lokushisa ububanzi -50 ... +580 ° C;
• ukunemba +/- 2%;
• ibanga endaweni usayizi ratio 16: 1;
• emissivity ka 0.1 - 1.0;
• Impendulo isikhathi <500 ms;
• isinqumo 1 ° C.

Laser lokushisa (isithombe) futhi yazisa mayelana, izinga lokushisa encane kunazo zonke futhi ngokwesilinganiso ngobukhulu. Indawo wokulinganisa kugudlukela ngu 2 cm ngezansi iphuzu kuhloswe. Laser sokukhomba ngokunembile ezimpambanweni zomgwaqo imisebe (36 cm).

Amprobe IR-710 - infrared laser izinga lokushisa, intengo $ 49,95. Izici:

• lokushisa ububanzi -50 ... +538 ° C;
• Ubuncane Usayizi indawo ka 20 mm;
• ukunemba +/- 2%;
• ibanga endaweni usayizi ratio 12: 1;
• emissivity ka 0.95;
• isikhathi ukusabela ms 500;
• isinqumo 1 ° C.

Lokhu thermometer laser (isithombe) ngaphandle lokushisa wamanje, futhi ibonisa okungenani kanye namagugu esiphezulu.