IEC 62990-1:2019/COR1:2019

Corrigendum 1 - Workplace atmospheres - Part 1: Gas detectors - Performance requirements of detectors for toxic gases

Name：IEC 62990-1:2019/COR1:2019   Standard name：Corrigendum 1 - Workplace atmospheres - Part 1: Gas detectors - Performance requirements of detectors for toxic gases Standard number：IEC 62990-1:2019/COR1:2019   language：English and French language Release Date：03-Dec-2019   technical committee：TC 31 - Equipment for explosive atmospheres Drafting committee：JWG 45 - TC 31/JWG 45   ICS number：29.260.20 - Electrical apparatus for explosive atmospheres

 IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
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IEC 62990-1 IEC 62990-1
Edition 1.0  2019-06 Édition 1.0  2019-06

WORKPLACE ATMOSPHERES – ATMOSPHÈRES DES LIEUX DE TRAVAIL –

Part 1: Gas detectors – Performance Partie 1: Détecteurs de gaz – Exigences
requirements of detectors for toxic gases d'aptitude à la fonction des détecteurs de gaz
toxiques
CO RRI G E NDUM 1
Corrections to the French version appear after the English text.
Les corrections à la version française sont données après le texte anglais.

5.3.11 Gas detection equipment as part of systems
Replace the first sentence of Subclause 5.3.11 with the following new text:
For gas detection equipment, which are part of systems, tests in 5.4.3, 5.4.5.1, 5.4.6.5, 5.4.6.6, 5.4.6.8
and 5.4.6.9 shall be performed with the maximum system communications transaction rate and activity
level.
5.4.2 Unpowered storage
Replace the second paragraph of Subclause 5.4.2 with the following new text:
The humidity requirement of 5.3.7 does not apply at the temperature of −20 °C. The humidity of the
ambient air shall be such that condensation does not occur.
5.4.7.4.2 TWA calculation
Replace the third paragraph of Subclause
...