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

For Thermal energy meters, instrument type is Thermal energy meters — calculator; annex is Annex VI (MI-004); condition is calculator sub-assembly; maximum permissible error is E c = ± (0,5 + Δθmin/Δθ), recorded from its source on 2026-08-05.

- **Instrument type:** Thermal energy meters — calculator
- **Annex:** Annex VI (MI-004)
- **Condition:** calculator sub-assembly _(our reading, not quoted from the source)_
- **Maximum permissible error:** E c = ± (0,5 + Δθmin/Δθ)

## What the source says

> The relative MPE of the calculator, expressed in %:

## 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/).