IEC 60079-11:2023/ISH3:2024
(Main)Interpretation sheet 3 - Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i"
Interpretation sheet 3 - Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i"
Feuille d'interprétation 3 - Atmosphères explosives - Partie 11: Protection de l’appareil par sécurité intrinsèque "i"
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© IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
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IEC 60079-11
Edition 7.0 2023-01
EXPLOSIVE ATMOSPHERES –
Part 11: Equipment protection by intrinsic safety “i”
INTERPRETATION SHEET 3
This interpretation sheet has been prepared by subcommittee 31G: Intrinsically-safe apparatus,
of IEC technical committee 31: Explosive atmospheres.
The text of this interpretation sheet is based on the following documents:
DISH Report on voting
31G/400/DISH 31G/403/RVDISH
Full information on the voting for the approval of this interpretation sheet can be found in the
report on voting indicated in the above table.
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IEC 60079-11 Edition 7.0 2023
EXPLOSIVE ATMOSPHERES – Part 11: Equipment protection by intrinsic safety “i”
Background
Devices which read from memory during operation are clearly programmable components and
need to be considered according to 7.7.8. IEC 60079-11 is not clear whether a component which
only reads from memory or internal registers during initialisation – such as a digital
potentiometer – is a programmable component according to 7.7.8 or a simpler semiconductor
which can be considered according to 7.7.2.
Question
Can a digital potentiometer (or other s
...
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