RO
SR EN 50104:2020
Electrical equipment for the detection and measurement of oxygen - Performance requirements and test methods
This document specifies general requirements for design, testing and performance, and describes the test methods that apply to portable, transportable and fixed equipment for the measurement of the oxygen concentration in gas mixtures indicating up to 25 % (v/v). The equipment, or parts thereof, may be intended for use in explosive atmospheres (see 4.1) and in mines susceptible to firedamp. This document applies to equipment intended for monitoring oxygen deficiency and enrichment. EXAMPLE Monitoring oxygen deficiency and/or enrichment includes: - protection of human health and safety in potentially oxygen deficient atmospheres; - fire protection by monitoring areas with reduced oxygen concentration; - fire protection by monitoring oxygen concentrations exceeding that of normal ambient air. This document also applies to equipment with an oxygen measuring function for explosion protection in the case of monitoring inertisation. NOTE 1 Inertisation is an explosion protection technique where a potentially explosive atmosphere is purged with inert gas. NOTE 2 Commonly used oxygen
Status :
Valid
Approval date : 5/29/2020
Withdrawal date : 1/31/2029
Number of pages : 40
ICS : 13.320 Alarm and warning systems
Technical Committee : 137 - Electrical apparatus for explosive atmospheres
- Replaces SR EN 50104:2011
- Normative reference SR EN 50270:2015
- Normative reference SR EN 50271:2018
- Normative reference SR EN 60068-2-6:2008
- Normative reference SR EN 60079-29-2:2015
- Replaced by SR EN IEC 60079-29-0:2026
- Amended by SR EN 50104:2020/A1:2023