• 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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    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

    Available format(s):  Hardcopy, PDF

    Superseded date:  31-05-2010

    Language(s):  English

    Published date:  15-09-1999

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    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

    Abstract - (Show below) - (Hide below)

    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.

    General Product Information - (Show below) - (Hide below)

    Committee EXL/31
    Development Note Supersedes 96/205827 DC (09/2005)
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By
    Supersedes

    Standards Referencing This Book - (Show below) - (Hide below)

    EN 50241-1 : 99 AMD 1 2004 SPECIFICATION FOR OPEN PATH APPARATUS FOR THE DETECTION OF COMBUSTIBLE OR TOXIC GASES AND VAPOURS - PART 1: GENERAL REQUIREMENTS AND TEST METHODS
    EN 50270:2015 Electromagnetic compatibility - Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen
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