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    • CSA C22.2 NO. 60079-29-1:17 (R2022)

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    CSA C22.2 NO. 60079-29-1:17 (R2022)

    Explosive atmospheres - Part 29-1: Gas detectors - Performance requirements of detectors for flammable gases (Adopted IEC 60079-29-1:2016, second edition, 2016-07, with Canadian deviations)
    SKU: 2703379 Published by CSA Group Publication Year 2017 Reaffirmed in 2022

    Product Details

    • Preface/Scope
    • Items Included

    CSA Preface


    This is the second edition of CAN/CSA-C22.2 No. 60079-29-1, Explosive atmospheres — Part 29-1: Gas detectors — Performance requirements of detectors for flammable gases, which is an adoption, with Canadian deviations, of the identically titled IEC (International Electrotechnical Commission) Standard 60079-29-1 (second edition, 2016-07). It supersedes the previous edition published in 2012 as CAN/CSA-C22.2 No. 60079-29-1 (adopted IEC 60079-29-1:2007) and replaces CSA C22.2 No. 152-M1984, Combustible gas detection instruments. It is one in a series of Standards issued by CSA Group under Part II of the Canadian Electrical Code. At the time of publication, IEC 60079-29-1:2016 is available from IEC in English only. CSA Group will publish the French version when it becomes available from IEC.


    For brevity, this Standard will be referred to as “CAN/CSA-C22.2 No. 60079-29-1” throughout.


    This Standard is intended to be used in conjunction with CAN/CSA-C22.2 No. 60079-0, Explosive atmospheres — Part 0: Equipment — General requirements.


    Changes in this edition include


    a) modified requirements for measuring range up to 20% LFL;


    b) general construction — malfunction effects on safety-related function;


    c) general indicating devices — portable equipment with visual and audible indication;


    d) suppression of indication and measured values below zero — functional limits;


    e) fault signals — fault indication below minimum voltage limit, sensor disconnection, and zero drift condition;


    f) adjustments — zero and sensitivity adjustments;


    g) marking — portable equipment protective case;


    h) instruction manual — additions and clarifications;


    i) samples and sequence of tests — optical filter special sensitivity limits, and modification considerations;


    j) test gas — methane, and propane or butane for general purpose gas detector;


    k) general test methods — selectable range and wiring worst case conditions;


    l) calibration curve — fixed volume fractions;


    m) response to different gases — semiconductor and catalytic high gas concentration exposure;


    n) stability — duration of test method;


    o) temperature (portable) — temperature range and stabilization period;


    p) temperature (all other equipment) — temperature range and stabilization period;


    q) warm-up time — user prompt requirement;


    r) power supply variation — minimum supply voltage fault limit;


    s) electromagnetic compatibility — test methods and requirements;


    t) software function — supporting documentation; and


    u) determination of time of response — test method clarification.


    This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard.


    This Standard was reviewed for Canadian adoption by the CSA Integrated Committee on Hazardous Location Products, under the jurisdiction of the CSA Technical Committee on Industrial Products and the CSA Strategic Steering Committee on Requirements for Electrical Safety, and has been formally approved by the Technical Committee.


    This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.


    Scope


    This part of IEC 60079-29 specifies general requirements for construction, testing and performance, and describes the test methods that apply to portable, transportable and fixed equipment for the detection and measurement of flammable gas or vapour concentrations with air. The equipment, or parts thereof, is intended for use in explosive atmospheres and in mines susceptible to firedamp.


    This part of IEC 60079-29 is applicable to flammable gas detection equipment with a measuring range up to any volume fraction as declared by the manufacturer, and which is intended to provide an indication, alarm or other output function; the purpose of which is to indicate a potential explosion hazard and in some cases, to initiate automatic or manual protective action(s).


    For the purposes of this part of IEC 60079-29, the term indicating up to a volume fraction of X % or X %LFL includes equipment with an upper limit of the measuring range equal to or less than X % or X %LFL.


    This part of IEC 60079-29 is applicable to equipment, including the integral sampling systems of aspirated equipment, intended to be used for commercial, industrial and non-residential safety applications.


    This part of IEC 60079-29 does not apply to external sampling systems, or to equipment of laboratory or scientific type, or to equipment used only for process monitoring and/or control purposes. It also does not apply to open path (line of sight) detectors which are within the scope of IEC 60079-29-4. Only equipment with very short optical paths intended for use where the concentration is uniform over the optical path are within the scope of this standard.


    For equipment used for sensing the presence of multiple gases, this part of IEC 60079-29 applies only to the detection of flammable gas or vapour.


    This part of IEC 60079-29 supplements and modifies the general requirements of IEC 60079-0. Where a requirement of this standard conflicts with a requirement of IEC 60079-0, the requirement of IEC 60079-29-1 takes precedence.


    NOTE 1 IEC 60079-29-1 is intended to provide for the supply of equipment giving a level of safety and performance suitable for general purpose applications. However, for specific applications, a prospective purchaser (or an appropriate authority) can additionally require the equipment to be submitted to particular tests or approval. For example, Group I equipment (i.e. equipment to be used in mines susceptible to firedamp) might not be permitted to be used without the additional, prior approval of the relevant authority in mines under its jurisdiction. Such particular tests/approval are to be regarded as additional to and separate from the provisions of the standards referred to above and do not preclude certification to or compliance with these standards.


    NOTE 2 All equipment calibrated on specific gases or vapours can not be expected to correctly indicate on other gases or vapours.


    For the purposes of this standard, the terms lower flammable limit (LFL) and lower explosive limit (LEL) are deemed to be synonymous, and likewise the terms upper flammable limit (UFL) and upper explosive limit (UEL) are deemed to be synonymous. For ease of reference, the two abbreviations LFL and UFL may be used hereinafter to denote these two sets of terms. It should be recognized that particular authorities having jurisdiction may have overriding requirements that dictate the use of one of these sets of terms and not the other.


    NOTE 3 Indication of concentration in %(v/v) or vol ppm can also be available for equipment which measures up to 100 %LFL or 20 %LFL. In that case, units of measurement might need to be selected in agreement with the manufacturer when verifying the performance requirements of Annex A.


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    CSA C22.2 NO. 60079-29-1:17 (R2022)

    Explosive atmospheres - Part 29-1: Gas detectors - Performance requirements of detectors for flammable gases (Adopted IEC 60079-29-1:2016, second edition, 2016-07, with Canadian deviations)

    Active
    English

    CSA C22.2 NO. 60079-29-1:F17 (C2022)

    Atmosphères explosives — Partie 29-1 : Détecteurs de gaz — Exigences d’aptitude à la fonction des détecteurs de gaz inflammables (norme IEC 60079-29-1:2016 adoptée, deuxième édition, 2016-07, avec exigences propres au Canada)

    Active
    French

    CAN/CSA-C22.2 NO. 60079-29-1:12 (R2016)

    Explosive atmospheres - Part 29-1: Gas detectors - Performance requirements of detectors for flammable gases (Adopted IEC 60079-29-1:2007, first edition, 2007-08, with Canadian deviations) | Atmosphères explosives - Partie 29-1 : Détecteurs de gaz - Exigences d'aptitude à la fonction des détecteurs de gaz inflammables (norme IEC 60079-29-1:2007 adoptée, première édition, 2007-08, avec exigences propres au Canada)

    Withdrawn
    Bilingual

    C22.2 NO. 152-M1984 (R2016)

    Combustible Gas Detection Instruments

    Withdrawn
    English

    C22.2 NO. 152-FM1984 (C2016)

    Détecteurs de gaz combustibles

    Withdrawn
    French
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