National instrument test procedures for utility meters: revision of NITP 14

Overview

The National Measurement Institute (NMI) has been working to revise NITP 14 – National Instrument Test Procedures for Utility Meters.

The proposed revisions include:

• separation of test procedures for different kinds of utility meters

• inclusion of test procedures for gas meters

• clarification of requirements for batch sampling plans and selection

• clarification of acceptance of ISO/IEC 17020 accredited laboratories

• removal of references to in-service inspection and re-verification

• clarification of requirements for marking of verification marks and issuing of batch verification certificates

• reduction in acceptance level for batch verification.

Consultation documents

As part of this process, we are seeking feedback from stakeholders on:

• NITP 14.0 – Utility meters – general requirements [439KB PDF] [122KB DOCX]

• NITP 14.1 – Utility meters – gas meters [530KB PDF] [131KB DOCX]

• NITP 14.2 – Utility meters – electricity meters [527KB PDF] [139KB DOCX]

• NITP 14.3 – Utility meters – water meters [577KB PDF] [131KB DOCX]

More information

• Find out more about utility meters

• View the current national instrument test procedures for measuring instruments