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Description of ASTM-E1256 2011ASTM E1256 - 11aStandard Test Methods for Radiation Thermometers (Single Waveband Type)Active Standard ASTM E1256 | Developed by Subcommittee: E20.02 Book of Standards Volume: 14.03 ASTM E1256Significance and Use The purpose of these test methods is to establish consensus test methods by which both manufacturers and end users may make tests to establish the validity of the readings of their radiation thermometers. The test results can also serve as standard performance criteria for instrument evaluation or selection, or both. The goal is to provide test methods that are reliable and can be performed by a sufficiently skilled end user or manufacturer in the hope that it will result in a better understanding of the operation of radiation thermometers and also promote improved communication between the manufacturers and the end users. A user without sufficient knowledge and experience should seek assistance from the equipment makers or other expert sources, such as those found at the National Institute of Standards and Technology in Gaithersburg, Maryland. Use these test methods with the awareness that there are other parameters, particularly spectral range limits and temperature resolution, which impact the use and characterization of radiation thermometers for which test methods have not yet been developed. Temperature resolution is the minimum simulated or actual change in target temperature that results in a usable change in output or indication, or both. It is usually expressed as a temperature differential or a percent of full-scale value, or both, and usually applies to value measured. The magnitude of the temperature resolution depends upon a combination of four factors: detector noise equivalent temperature difference (NETD), electronic signal processing, signal-to-noise characteristics (including amplification noise), and analog-to-digital conversion granularity. Spectral range limits are the upper and lower limits to the wavelength band of radiant energy to which the instrument responds. These limits are generally expressed in micrometers ( ? m) and include the effects of all elements in the measuring optical path. At the spectral response limits, the transmission of the measuring optics is 5 % of peak transmission (see Fig. 1). 1. Scope 1.1 The test methods described in these test methods can be utilized to evaluate the following six basic operational parameters of a radiation thermometer (single waveband type):
IEC Documents IEC629421 TS Industrial Process Control Devices -- Radiation Thermometers -- Part 1: Technical Data for Radiation ThermometersKeywords blackbody; calibration; field-of-view; long-term stability; radiation thermometer; radiometer; repeatability; response time; temperature; warm-up time; waveband; Blackbody; Calibration--temperature analysis instrumentation; Iris diaphragm diameter; Long-term drift; Radiation thermometers; Radiometers; Response time; Target size; Thermometers; Warm-up time; Waveband; ICS Code ICS Number Code 17.200.20 (Temperature-measuring instruments) DOI: 10.1520/E1256-11A ASTM International is a member of CrossRef. ASTM E1256This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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