# Thermal energy meter — Accuracy classes and maximum permissible errors for trade measuring instruments (EU MID)

For Thermal energy meter, annex is VI; accuracy class is 1, 2, 3; condition is Complete instrument; maximum permissible error is Formula-based per class (Ef + Et + Ec); scope or member state option is MI-004. MPE as percentage of true value, recorded from its source on 2026-08-05.

- **Instrument type:** Thermal energy meter _(verified: appears in the quote below)_
- **Annex:** VI
- **Accuracy class:** 1, 2, 3
- **Condition:** Complete instrument _(our reading, not quoted from the source)_
- **Maximum permissible error:** Formula-based per class (Ef + Et + Ec)
- **Scope or member state option:** MI-004. MPE as percentage of true value. _(our reading, not quoted from the source)_

## What the source says

> The maximum permissible relative errors applicable to a complete thermal energy meter, expressed in percent of the true value for each accuracy class, are:

## Source

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

Last verified: 2026-08-05. Review by: 2027-08-05.
Part of [Accuracy classes and maximum permissible errors for trade measuring instruments (EU MID)](https://referencesource.org/legal-metrology-accuracy-classes/).