OIML R 137-1 & 2 : 2012 AMD 2014
Current
The latest, up-to-date edition.
GAS METERS - PART 1: METROLOGICAL AND TECHNICAL REQUIREMENTS; PART 2: METROLOGICAL CONTROLS AND PERFORMANCE TESTS
01-12-2013
Foreword
Part 1: Metrological and technical requirements
1 Introduction
2 Scope
3 Terminology
4 Units of measurement
5 Metrological requirements
6 Technical requirements
7 Inscriptions
8 Operating instructions
9 Sealing
10 Suitability for testing
Annex I (Mandatory): Requirements for software controlled
gas meters
Part 2: Metrological controls and performance tests
11 Metrological controls
12 Type evaluation
13 Initial verification and subsequent verification
Annex A (Mandatory): Environmental tests for electronic
instruments or devices
Annex B (Mandatory): Flow disturbance tests
Annex C (Mandatory): Overview of requirements and
applicable tests for different metering
principles
Annex D (Mandatory): Type evaluation of a family
of gas meters
Annex E: Description of selected validation methods
Annex F: Bibliography
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