ASTM E1137/E1137M - 08(2020)
Standard Specification for Industrial Platinum Resistance Thermometers
| Aviso: | Las normas ASTM en lectura se visualizan a través del área decliente. Los archivos no se pueden descargar |
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| Fecha edición: |
2020-05-01
En Vigor
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| Idiomas disponibles: | Inglés |
| Resumen: | This specification establishes the physical, performance, and testing requirements, as well as resistance-temperature relationship and tolerances for metal-sheathed industrial platinum resistance thermometers (PRT) suitable for direct immersion temperature measurement. All materials including the sheath materials, sensing elements, insulation, connecting wire end closure materials, epoxy materials, and connecting wires shall be in accordance with specified requirements. The PRT shall be subjected to corresponding qualification tests to demonstrate conformance to the acceptance criteria of the following properties: insulation resistance; resistance versus temperature; minimum immersion length; pressure; thermal response time; vibration; self-heating; stability; thermoelectric effect; mechanical shock; and dimensions. |
| Keywords: | ITS-90; metal sheath; platinum resistance thermometer; PRT; |
| Scope: | 1.1 This specification covers the requirements for metal-sheathed industrial platinum resistance thermometers (PRT's) suitable for direct immersion temperature measurement. It applies to PRT's with an average temperature coefficient of resistance between 0 and 100 °C of 0.385 %/°C and nominal resistance at 0 °C of 100 Ω or other specified value. This specification covers PRT's suitable for all or part of the temperature range −200 to 650 °C. The resistance-temperature relationship and tolerances are specified as well as physical, performance, and testing requirements. 1.2 The values of temperature in this specification are based on the International Temperature Scale of 1990 (ITS-90).2 1.3 The values stated in inch-pound units or SI (metric) units may be regarded separately as standard. The values stated in each system are not exact equivalents, and each system shall be independent of the other. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
| ICS: | 17.200.20 - Instrumentos de medida de temperatura |
| CTN: | E20.03 - E20.03 |
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Otras Relaciones |
Es referenciada por D0648-18 Es referenciada por D3828-16AR21 Es referenciada por D6084_D6084M-21 Es referenciada por D3012-19 Es referenciada por D2726_D2726M-21 Es referenciada por D4957-18 Es referenciada por D3143_D3143M-19 Es referenciada por D0070_D0070M-21 Es referenciada por E2821-20 Es referenciada por D8174-18 Es referenciada por D7496-18 Es referenciada por E2877-12R19 Es referenciada por E1652-21 Es referenciada por D8175-18 Es referenciada por D6176-97R22 Es referenciada por D7906-22 Es referenciada por D8055-23 Es referenciada por D5869_D5869M-07AR23 Es referenciada por D2746_D2746M-18R23 Es referenciada por D2872-22 |










