DIN EN 17526:2026-07
Gas meter - Thermal-mass flow-meter based gas meter; German and English version prEN 17526:2026 / Note: Date of issue 2026-06-12*Intended as replacement for DIN EN 17526 (2025-11).
| Fecha edición: |
2026-07-01
En Vigor
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| Idiomas disponibles: | Alemán, Inglés |
| Resumen: | This document specifies requirements and tests for the construction, performance, safety and production of battery powered class 1,5 Capillary Thermal-Mass Flow sensor gas meters (hereinafter referred to as meter(s)). This applies to meters having co-axial single pipe, or two pipe connections, that are used to measure volumes of fuel gases of the 2nd and/or 3rd family, as given in EN 437:2021, and non-conventional gases, including up to 20% hydrogen/gas blends and 100% hydrogen. In general, the term "thermal mass flow meters" applies to a flow-measuring device using heat transfer to measure and indicate gas flowrate, as defined in ISO 14511. NOTE 1 Although the word "mass" is present in the definition of the measurement principle, gas meters covered by this document provide measurement of gas at base conditions of temperature and pressure. These meters have a maximum working pressures not exceeding 0,5 bar and a maximum flowrate not exceeding 160 m3?h?1 over a minimum ambient temperature range of ?10 °C to +40 °C and a gas temperature range as specified by the manufacturer with a minimum range of 40 °C. |
| Keywords: | Definitions|Design|Electromagnetic interferences|Flow coefficient|Flow measurement installations|Flow metering devices|Flowmeters|Gas flow|Gas meters|Gas sensors|Marking|Mass flow rates|Metering mechanism|Performance requirements|Properties|Safety|Sensors|Specification (approval)|Testing|Thermal measurement|Volume measurement |
| ICS: | 91.140.40 - Sistemas de suministro de gas |
| CTN: |
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