# Exhaust gas analysers · Annex XII · lambda calculation — Accuracy classes and maximum permissible errors for trade measuring instruments

For Exhaust gas analysers, annex is Annex XII; condition is lambda calculation; maximum permissible error is 0,3 %, recorded from its source on 2026-09-01.

- **Instrument type:** Exhaust gas analysers _(verified: appears in its own passage below)_
- **Annex:** Annex XII _(verified: appears in its own passage below)_
- **Condition:** lambda calculation _(our reading, not quoted from the source)_
- **Maximum permissible error:** 0,3 % _(verified: appears in the quote below)_

## What the source says

> The MPE on lambda calculation is 0,3 %.

## 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 XII EXHAUST GAS ANALYSERS (MI-010) The relevant requirements of Annex I, the specific requirements of this Annex and the conformity assessment procedures listed in this Annex, apply to exhaust gas analysers defined below intended for inspection and professional maintenance of motor vehicles in use.

### Annex

> ANNEX XII EXHAUST GAS ANALYSERS (MI-010)

## 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/).