BS EN 50241-2:1999
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Specification for open path apparatus for the detection of combustible or toxic gases and vapours Performance requirements for apparatus for the detection of combustible gases
Hardcopy , PDF
05-31-2010
English
09-15-1999
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
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