SN EN 50241-2 : 1999
Current
The latest, up-to-date edition.
SPECIFICATION FOR OPEN PATH APPARATUS FOR THE DETECTION OF COMBUSTIBLE OR TOXIC GASES AND VAPOURS - PART 2: PERFORMANCE REQUIREMENTS FOR APPARATUS FOR THE DETECTION OF COMBUSTIBLE
12-01-2013
Foreword
1 Scope
2 Normative references
3 Definitions
4 General requirements
5 Performance requirements
5.1 Requirements for tests
5.2 Unpowered storage
5.3 Calibration curve (not applicable to
alarm-only apparatus)
5.4 Drift (continuous duty apparatus only)
5.5 Alarm
5.6 Temperature variation
5.7 Pressure variation
5.8 Water vapour interference
5.9 Vibration
5.10 Alignment
5.11 Time of response
5.12 Power supply variations
5.13 Power supply interruptions and transients
5.14 Recovery from power supply interruption
5.15 Electromagnetic compatibility
5.16 Attenuation of radiation
5.17 Beam blockage
5.18 Long range operation
5.19 Direct solar radiation (applicable for apparatus
intended for outdoor use)
6 Field verification equipment
7 Instructions for use
Defines performance requirements for Group II1) portable, transportable and fixed apparatus for the detection and measurement of integral concentrations of combustible gas or vapour in air over a defined open path. The apparatus or part of apparatus may be installed or transported for use in potentially explosive atmospheres. General requirements and test methods applicable to the apparatus are also covered.
| DocumentType |
Standard
|
| PublisherName |
Swiss Standards
|
| Status |
Current
|
| Standards | Relationship |
| DIN EN 50241-2 : 2000 | Identical |
| BS EN 50241-2:1999 | Identical |
| I.S. EN 50241-2:1999 | Identical |
| EN 50241-2:1999 | Identical |
| UNE-EN 50241-2:1999 | Identical |
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