1、 IEC/TS 62492-1 Edition 1.0 2008-04 TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE Industrial process control devices Radiation thermometers Part 1: Technical data for radiation thermometers Dispositifs de commande des processus industriels Pyromtres Partie 1: Donnes techniques pour les pyromtres IE
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16、AQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC/TS 62492-1 Edition 1.0 2008-04 TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE Industrial process control devices Radiation thermometers Part 1: Technical data for radiation thermometers Disposit
17、ifs de commande des processus industriels Pyromtres Partie 1: Donnes techniques pour les pyromtres INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE S ICS 25.040.40; 17.200.20 PRICE CODE CODE PRIX ISBN 2-8318-9722-X 2 TS 62492-1 IEC:2008 CONTENTS FOREWORD.3 1 Scope
18、.5 2 Normative references .5 3 Terms, definitions and abbreviations 5 3.1 Terms and definitions 5 3.2 Abbreviations 7 4 Technical data8 4.1 Types of technical data .8 4.1.1 Metrological data.8 4.1.2 Equipment features .20 Annex A (informative) .21 Figure 1 Demonstration of the response time to a ris
19、ing temperature step .18 Figure 2 Demonstration of the exposure time.19 Table 1 Measurement uncertainty (example 1).10 Table 2 Measurement uncertainty (example 2).10 Table A.1 Change in indicated temperature corresponding to a 1 % change in the radiation exchange with a radiation thermometer at 23 C
20、 21 TS 62492-1 IEC:2008 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ INDUSTRIAL PROCESS CONTROL DEVICES RADIATION THERMOMETERS Part 1: Technical data for radiation thermometers FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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31、ternational Standards. In exceptional circumstances, a technical committee may propose the publication of a technical specification when the required support cannot be obtained for the publication of an International Standard, despite repeated efforts, or the subject is still under technical develop
32、ment or where, for any other reason, there is the future but no immediate possibility of an agreement on an International Standard. Technical specifications are subject to review within three years of publication to decide whether they can be transformed into International Standards. IEC/TS 62492-1,
33、 which is a technical specification, has been prepared by subcommittee 65B: Devices and process analysis, of IEC technical committee 65: Industrial-process measurement, control and automation. The text of this technical specification is based on the following documents: 4 TS 62492-1 IEC:2008 Enquiry
34、 draft Report on voting 65B/622/DTS 65B/649/CC Full information on the voting for the approval of this technical specification can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. This Technical Specif
35、ication is one of a series of publications on radiation thermometers. Future parts of this series are planned with the following titles: Part 2: Determination of the technical data for radiation thermometers (under consideration); Part 3: Calibration of radiation thermometers (under consideration).
36、The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be transformed into an International
37、 standard, reconfirmed, withdrawn, replaced by a revised edition, or amended. TS 62492-1 IEC:2008 5 INDUSTRIAL PROCESS CONTROL DEVICES RADIATION THERMOMETERS Part 1: Technical data for radiation thermometers 1 Scope This Technical Specification applies to radiation thermometry. It defines the techni
38、cal data, i.e. metrological data to be given in data sheets and operating instructions for radiation thermometers with one wavelength range and one measurement field, to ensure that the data and terminology are used consistently. Technical data for radiation thermometers are frequently given using t
39、erms whose meaning is not clear and therefore open to misinterpretation. Moreover, the data are given for measuring conditions which are not standardised. Often, influence parameters and mutual interdependencies of technical data are not given. As a result, the user cannot easily compare the technic
40、al design and performance data of radiation thermometers and tests for compliance with the manufacturers specifications are difficult to carry out. The purpose of this Technical Specification is to facilitate comparability and testability. Therefore, unambiguous definitions are stipulated for statin
41、g technical data under standardised measuring conditions. NOTE 1 Infrared ear thermometers are excluded from this Specification. NOTE 2 It is not compulsory for manufacturers and sellers of radiation thermometers to include all items given in this Specification for a specific type of radiation therm
42、ometer. Only the relevant data should be stated and should comply with this Specification. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest editio
43、n of the referenced document (including any amendments) applies. Guide to the Expression of Uncertainty of Measurement (1995) BIPM, IEC, IFCC, ISO, IUPAC, IUPAP, OIML International Vocabulary of Basic and General Terms in Metrology (1993) BIPM, IEC, IFCC, ISO, IUPAC, IUPAP, OIML 3 Terms, definitions
44、 and abbreviations 3.1 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1.1 measuring temperature range temperature range for which the radiation thermometer is designed 6 TS 62492-1 IEC:2008 3.1.2 measurement uncertainty (accuracy) parameter, ass
45、ociated with the result of a measurement, that characterises the dispersion of the values that could reasonably be attributed to the measurand 3.1.3 noise equivalent temperature difference parameter which indicates the contribution of the measurement uncertainty in C, which is due to instrument nois
46、e 3.1.4 measuring distance distance or distance range between the radiation thermometer and the target (measured object) for which the radiation thermometer is designed 3.1.5 field-of-view usually circular, flat surface of a measured object from which the radiation thermometer receives radiation 3.1
47、.6 distance ratio ratio of the measuring distance to the diameter of the field-of-view when the target is in focus 3.1.7 size-of-source effect difference in the radiance- or temperature reading of the radiation thermometer when changing the size of the radiating area of the observed source 3.1.8 emi
48、ssivity setting the emissivity of a surface is the ratio between the radiation emitted from this surface and the radiation from a blackbody at the same temperature. The emissivity describes a thermo- physical material characteristic, which in addition to the chemical composition of the material may
49、also be dependent on the surface structure (rough, smooth), the emission direction as well as on the observed wavelength and the temperature of the measured object. In most measuring situations a radiation thermometer is used on a surface with an emissivity significantly lower than 1. For this purpose most thermometers have the possibility of adjusting the emissivity setting. The temperature reading i
