CS214929B1 - Method of measuring the temperature with a two-color pyrometer - Google Patents

Method of measuring the temperature with a two-color pyrometer Download PDF

Info

Publication number
CS214929B1
CS214929B1 CS353580A CS353580A CS214929B1 CS 214929 B1 CS214929 B1 CS 214929B1 CS 353580 A CS353580 A CS 353580A CS 353580 A CS353580 A CS 353580A CS 214929 B1 CS214929 B1 CS 214929B1
Authority
CS
Czechoslovakia
Prior art keywords
color
temperature
measuring
measuring temperatures
pyrometer
Prior art date
Application number
CS353580A
Other languages
Czech (cs)
Slovak (sk)
Inventor
Milan Longauer
Jaromir Havlica
Original Assignee
Milan Longauer
Jaromir Havlica
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Milan Longauer, Jaromir Havlica filed Critical Milan Longauer
Priority to CS353580A priority Critical patent/CS214929B1/en
Publication of CS214929B1 publication Critical patent/CS214929B1/en

Links

Landscapes

  • Radiation Pyrometers (AREA)

Abstract

Spůsob merania teplót dvojfarebným pyrometrom je určený na meranie vyšších teplůt ako 1000 °C v odboroch skúšobníctva chemických a hutnických odvětví. Podstata spůsobu merania teplůt dvojfarebným pyrometrom, pozostávajúcim z optickej sústavy, ktorá má za farebnými filtrami umiestnené svetlocitlivé snímače spočívá v tom, že poměr napátí sa vyhodnocuje podielovým zosilňovačom. Uvedený spůsob merania teplůt možno uplatnit v chemických a hutnických laboratóriach a skúšobniach.The method of measuring temperatures with a two-color pyrometer is intended for measuring temperatures higher than 1000 °C in the chemical and metallurgical testing departments. The essence of the method of measuring temperatures with a two-color pyrometer, consisting of an optical system with light-sensitive sensors placed behind color filters, is that the voltage ratio is evaluated by a proportional amplifier. The above-mentioned method of measuring temperatures can be applied in chemical and metallurgical laboratories and testing rooms.

Description

Predmetom vynálezu je spósob merania teplót dvojfarebným pyrometrom, vyšších ako 1000 °C.The subject of the invention is a method of measuring heat by a two-color pyrometer, higher than 1000 ° C.

Doteraz sa teploty nad 1000 °C merajú troma druhmi pyrometrov. Rozlišujú sa podl'a toho, akým spůsobom sa meria intenzita vyžarovania pozorovaného objektu. Pri pyrometroch patriacich do prvej skupiny sa vizuálně porovnává jas monochromatického žiarenia vysielaného pozorovaným telesom s jasom svietiaceho vlákna elektrickej žiarovky, ktorý možno meniť žeraviacim prúdom kalibrovaným predradeným odporom. Totálnymi pyrometrami sa meria celková vyžiarená energia sústredená do jedného bodu, v ktorom je umiestnený detektor. Dvojfarebnými pyrometrami sa porovnává intenzita dvoch farieb zo spektra meraného telesa. Vlnové dlžky a farba filtrov sa volí podlá teplotného intervalu v ktorom sa meria teplota. Pri meraní teplót v širokom intervale sa používajú červené a zelené filtre. Přesnost merania pyrometrami zaradenýml do prvej skupiny závisí od subjektivných schopností pracovníka, pričom tieto neumožňujú kontinuálně vyhodnocovanie. Nevýhodou totálnych pyrometrov je poměrně úzký teplotný rozsah a presnosť meraní ovplyvnená charakterom procesu prebiehajúceho pri vysokých teplotách, pretože nečistoty, nepriehiadné plyny a drobné částice móžu znížiť intenzitu světla dopadajúceho na svetlocitlivý snímač. Z tohto hiadiska sa javia najvýhodnejšle dvojfarebné pyrometre, pri ktorých sa spravidla před svetlocitlivým snímačom striedajú farebné filtre. Porovnanie intenzit jednotlivých farieb nebývá ovplyvnené takými chybami ako pri predošlých typoch. Ich nevýhodou však je, že vyžadujú konstrukčně náročné súčiastky.So far, temperatures above 1000 ° C are measured by three types of pyrometers. A distinction is made according to the way the intensity of the radiation of the object is measured. For pyrometers belonging to the first group, the brightness of the monochromatic radiation emitted by the observed body with the brightness of the light filament of the electric bulb can be visually compared, which can be changed by the glow current calibrated by the upstream resistor. Total pyrometers are used to measure the total radiated energy concentrated at one point where the detector is located. Two-color pyrometers are used to compare the intensity of two colors from the spectrum of the measured body. The wavelengths and color of the filters are selected according to the temperature interval at which the temperature is measured. Red and green filters are used to measure the temperature over a wide range. The accuracy of pyrometer measurements included in the first group depends on the worker's subjective abilities, which do not allow continuous evaluation. The disadvantage of total pyrometers is the relatively narrow temperature range and measurement accuracy influenced by the nature of the process taking place at high temperatures, since impurities, impermeable gases and small particles can reduce the light intensity incident on the light sensitive sensor. From this point of view, two-color pyrometers appear to be most advantageous, in which color filters are alternated generally in front of the light-sensitive sensor. Comparing the intensities of individual colors is not affected by such errors as in previous types. However, their disadvantage is that they require structurally demanding components.

Hoře uvedené nedostaky odstraňuje spósob merania teplót dvojfarebným pyrometrom, pozostávajúcim z optickej sústavy, ktorá má za farebnými filtrami umiestnené svetlocitlivé snímače pódia vynálezu, ktorého podstata spočívá v tom, že poměr napatí sa vyhodnocuje na výstupe podielovým zosilňovačom.The aforementioned drawbacks are eliminated by a method of measuring the temperature with a two-color pyrometer consisting of an optical system having light-sensitive sensors of the present invention behind the color filters, the principle of which is that the voltage ratio is evaluated at the output by a co-amplifier.

Vynález spósobu merania teplót dvojfarebným pyrometrom možno uplatnit aj tam, kde třeba merať teplotu v znečistenom prostředí na niekoikých miestach súčasne. Výstupný elektrický signál umožňuje automatizáciu a riadenie pracovných procesov pomocou počítača. Navrhovaný spósob merania je jednoduchší, spolehlivější a pracuje aj v stažených pracovných podmienkach, najma tam, kde sa odparujú splodiny reakcií.The invention of the method of measuring the temperature with a two-color pyrometer can also be applied where it is necessary to measure the temperature in a polluted environment at several locations simultaneously. The electrical output signal enables automation and control of work processes using a computer. The proposed method of measurement is simpler, more reliable, and works well under contracted working conditions, especially where the fumes of the reaction evaporate.

Schéma usporiadaní súčastí k prevedeniu spósobu merania teplót dvojfarebným pyrometrom je znázorněná na pripojenom obrázku.A schematic of the arrangement of the components for conducting the temperature measurement method with a two-color pyrometer is shown in the attached figure.

Dvojfarebný pyrometer sa skládá z optickéj sústavy 1, ktorá má za farebnými filtrami 2 a 4 svetlocitlivé snímače 3 a 5. Výstupné napStie zo svetlocitlivých snímačov 3 a 5 sa pri meraní privádza na podielový zosilňovač 6. Potřebný poměr sa dosiahne elektronicky uplatněním podielového zosilňovača 6. Pri znížení svetelnej priepustnosti, například pri vytvoření sa usadenín dochádza k celkovému zníženiu intenzity, ale podiel intenzit jednotlivých farieb sa přitom nemení.The two-color pyrometer consists of optical system 1, which has 2 and 4 light-sensitive sensors 3 and 5 behind the color filters. The output voltage from the light-sensitive sensors 3 and 5 is fed to the unit amplifier 6 as measured. The required ratio is obtained electronically by applying a unit amplifier 6. When the light transmittance is reduced, for example in the formation of deposits, the overall intensity is reduced, but the proportion of the individual colors does not change.

Vynález možno využit v chemických laboratóriach a v hutníctve.The invention can be used in chemical laboratories and in metallurgy.

Claims (1)

PREDMETSUBJECT Spósob merania teplót dvojfarebným pyrometrom, pozostávajúcim z optickej sústavy, ktorá má za farebnými filtrami umiestnené svetlocitlivé snímače, vyznačujúci sa tým, že poměr napatí sa vyhodnocuje na výstupe podielovým zosilňovačom (6).A method of measuring temperatures with a two-color pyrometer, consisting of an optical system having light-sensitive sensors located behind the color filters, characterized in that the voltage ratio is evaluated at the output by a unit amplifier (6).
CS353580A 1980-05-21 1980-05-21 Method of measuring the temperature with a two-color pyrometer CS214929B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CS353580A CS214929B1 (en) 1980-05-21 1980-05-21 Method of measuring the temperature with a two-color pyrometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS353580A CS214929B1 (en) 1980-05-21 1980-05-21 Method of measuring the temperature with a two-color pyrometer

Publications (1)

Publication Number Publication Date
CS214929B1 true CS214929B1 (en) 1982-06-25

Family

ID=5375737

Family Applications (1)

Application Number Title Priority Date Filing Date
CS353580A CS214929B1 (en) 1980-05-21 1980-05-21 Method of measuring the temperature with a two-color pyrometer

Country Status (1)

Country Link
CS (1) CS214929B1 (en)

Similar Documents

Publication Publication Date Title
SU1479012A3 (en) Method of detecting changes in material color
US3611805A (en) Radiation thermometer
JP2604754B2 (en) Spectrophotometer
IT9019833A1 (en) MEASUREMENTS AND TEMPERATURE CONTROL FOR PHOTOTHERMAL PROCESSES
JPS57166529A (en) Method and device for measuring temperature
Tschudi et al. Measuring temperatures in the presence of external radiation by flash assisted multiwavelength pyrometry
CN102445325A (en) Device and method for measuring shade number of automatic darkening welding filter
US3366789A (en) Calibration of ultraviolet radiation sources
CS214929B1 (en) Method of measuring the temperature with a two-color pyrometer
US3635088A (en) Measure of the temperature of hot energy-radiating bodies
Jones et al. The Determination of the Thermodynamic Temperatures of Thermometry Fixed Points in the Range 660 C to 1064 C
Hunter et al. An Improved Method Of Multi-Wavelenth Pyrometry
JPS55144513A (en) Measuring method of emissivity
JPS61210921A (en) Instrument for measuring emissivity and temperature of subject
DE68916102T2 (en) Method and device for measuring the temperature of a distant object.
JPH07270254A (en) Optical fiber type temperature measuring device
JPS63127127A (en) Optical power measuring instrument
Ozolins et al. Temperature effect on spectrometer slit width and photomultiplier sensitivity
EP0216458A1 (en) Temperature detecting pyrometer
JPS6135960Y2 (en)
JPS6155049B2 (en)
Erik et al. Three channel optical temperature measurement of laser-heated reacting particles
JPS56137236A (en) Measuring device for temperature
SU1732118A1 (en) Method of flame presence control
JPS61175534A (en) Emissivity measuring apparatus