# Gas meters and volume conversion devices · Annex IV · volume conversion device at 20 °C ± 3 °C, humidity 60 % ± 15 %, nominal power supply — Accuracy classes and maximum permissible errors for trade measuring instruments

For Gas meters and volume conversion devices, annex is Annex IV; condition is volume conversion device at 20 °C ± 3 °C, humidity 60 % ± 15 %, nominal power supply; maximum permissible error is 0,5 %, recorded from its source on 2026-09-01.

- **Instrument type:** Gas meters and volume conversion devices _(verified: appears in its own passage below)_
- **Annex:** Annex IV _(verified: appears in its own passage below)_
- **Condition:** volume conversion device at 20 °C ± 3 °C, humidity 60 % ± 15 %, nominal power supply _(our reading, not quoted from the source)_
- **Maximum permissible error:** 0,5 % _(verified: appears in its own passage below)_

## What the source says

> 8. MPE — | 0,5 % at ambient temperature 20 °C ± 3 °C, ambient humidity 60 % ± 15 %, nominal values for power supply; | — | 0,7 % for temperature conversion devices at rated operating conditions; | — | 1 % for other conversion devices at rated operating conditions.

## Where each value comes from

This source states these in separate places, so each value is shown with the passage that states it.

### Instrument type

> ANNEX IV GAS METERS AND VOLUME CONVERSION DEVICES (MI-002) The relevant requirements of Annex I, the specific requirements of this Annex and the conformity assessment procedures listed in this Annex, apply to gas meters and volume conversion devices defined below, intended for residential, commercial and light industrial use.

### Annex

> ANNEX IV GAS METERS AND VOLUME CONVERSION DEVICES (MI-002)

### Maximum permissible error

> 0,5 % at ambient temperature 20 °C ± 3 °C, ambient humidity 60 % ± 15 %, nominal values for power supply

## Source

- https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32014L0032

Last verified: 2026-09-01. Review by: 2027-09-01.
Part of [Accuracy classes and maximum permissible errors for trade measuring instruments](https://referencesource.org/legal-metrology-accuracy-classes/).