PREN 14236 : DRAFT 2017

European foreword
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Normal operating conditions
5 Metrological performance
6 Construction and materials
7 Optional features
8 Index
9 Marking
10 Software
11 Communications
12 Battery
13 Immunity to electromagnetic disturbances
14 Ultrasonic (acoustic) noise interference
15 Meters supplied for testing
Annex A (informative) - Test gases
Annex B (normative) - Production requirements
        for gas meters
Annex C (normative) - Meters with gas temperature
        conversion devices
Annex ZA (informative) - Relationship between this
         European Standard and the Essential Requirements
         of EU Directive 2014/32/EU Measuring Instruments
         Directive aimed to be covered
Bibliography

Describes requirements and tests for the construction, performance and safety of class 1,0 and class 1,5 battery powered ultrasonic gas meters (hereinafter referred to as meters), having co-axial single pipe, or two pipe connections, used to measure volumes of distributed fuel gases of the second and/or third family, as given in EN 437, at maximum working pressures not exceeding 0,5 bar and maximum actual flow rates of up to 10 m3/h over a minimum ambient temperature range of -10 degrees C to +40 degrees C, and minimum gas temperature span of 40 K, for domestic applications.