ONORM EN ISO 7278-2 : 1997

Committees responsible
National foreword
Methods
0 Introduction
1 Scope and field of application
2 References
3 Definitions
4 Description of systems
5 Essential performance requirements
6 Equipment
7 Design of pipe provers
8 Installation
9 Calibration
Annexes
A The use of pipe provers with four detectors
B Example of the calculation of the design parameters
   of a pipe prover
Figures
1 Typical unidirectional return-type prover system
2 Typical bidirectional straight-type piston prover
   system
3 Typical bidirectional U-type sphere prover system
4 Simultaneous use of two counters with a four-detector
   prover
5 Temporary connection of counters to measure n1 and n2

Gives guidance for the design, installation and calibration of pipe provers. Applies to pipe provers for use with different liquids and types of meters and for proving them in different services. Does not apply to the newer "small volume" or "compact" provers. Includes references, definitions, description of systems, essential performance requirements, equipment, design of pipe provers, installation and calibration.