• AS/NZS 61779.3:2000

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    Electrical apparatus for the detection and measurement of flammable gases Performance requirements for group I apparatus indicating a volume fraction up to 100% methane in air

    Available format(s):  Hardcopy, PDF 1 User, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Superseded date:  29-03-2023

    Language(s):  English

    Published date:  23-02-2000

    Publisher:  Standards Australia

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

    1 - AS/NZS 61779.3:2000 ELECTRICAL APPARATUS FOR THE DETECTION AND MEASUREMENT OF FLAMMABLE GASES - PERFORMANCE REQUIREMENTS FOR....
    4 - PREFACE
    5 - CONTENTS
    7 - 1 Scope
    7 - 2 Definitions
    7 - 3 General requirements
    7 - 4 Performance requirements
    7 - 4.1 General
    8 - 4.2 Unpowered storage
    8 - 4.3 Calibration curve (not applicable to alarm-only apparatus)
    8 - 4.4 Stability (continuous duty apparatus)
    8 - 4.5 Stability (spot-reading apparatus)
    8 - 4.6 Alarm
    8 - 4.7 Temperature
    8 - 4.8 Pressure
    9 - 4.9 Humidity
    9 - 4.10 Air velocity
    9 - 4.11 Flow rate
    9 - 4.12 Orientation
    9 - 4.12.1 Portable apparatus
    9 - 4.12.2 Fixed and transportable apparatus
    9 - 4.13 Vibration
    9 - 4.14 Drop test (applicable to portable apparatus and remote sensors)
    9 - 4.15 Warm-up time (not applicable to spot-reading apparatus)
    9 - 4.15.1 Fixed and transportable apparatus
    10 - 4.15.2 Continuous duty portable apparatus
    10 - 4.16 Time of response (not applicable to spot-reading apparatus)
    10 - 4.17 Minimum time to operate (spot-reading apparatus)
    10 - 4.18 High gas concentration above the measuring range
    10 - 4.19 Battery capacity
    10 - 4.19.1 Battery-powered portable continuous duty apparatus
    10 - 4.19.2 Battery-powered portable spot-reading apparatus
    10 - 4.20 Power supply variations
    10 - 4.20.1 General
    10 - 4.20.2 AC and external d.c. powered apparatus
    10 - 4.20.3 Other power supply ranges
    11 - 4.21 Power supply interruptions, voltage transients and step changes of voltage
    11 - 4.22 Addition of sampling probe
    11 - 4.23 Dust
    11 - 4.24 Poisons and other gases
    11 - 4.24.1 Poisons
    11 - 4.24.2 Other gases
    11 - 4.25 Electromagnetic compatibility
    11 - 5 Field calibration kit

    Abstract - (Show below) - (Hide below)

    Specifies requirements for group I (as defined in part 1) portable, transportable and fixed apparatus for the detection and measurement of methane concentrations in mine air. The apparatus, or parts thereof, are intended for use in mines susceptible to firedamp. The requirements and test methods applicable to the apparatus covered by This Standard are specified in part 1. This Standard is restricted to apparatus intended for the detection and measurements of volume ratios of methane in air from a volume fraction of 0 percent up to a volume fraction of 100 percent.

    Scope - (Show below) - (Hide below)

    1.1 This part of AS/NZS 61779 specifies requirements for group I (as defined in part 1) portable, transportable and fixed apparatus for the detection and measurement of methane concentrations in mine air. The apparatus, or parts thereof, are intended for use in mines susceptible to firedamp. The requirements and test methods applicable to the apparatus covered by this standard are specified in part 1.NOTE ¾ The use of group I apparatus may not be permitted without the additional and prior approval of the relevant authority in mines under its jurisdiction, see note 1 of 1.1.1 of part 1.1.2 This standard is restricted to apparatus intended for the detection and measurement of volume ratios of methane in air from a volume fraction of 0% up to a volume fraction of 100%.NOTE ¾ Apparatus covered by this standard will normally be intended to operate in volume ratios greater than a volume fraction of 5%.

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

    Committee EL-014
    Document Type Standard
    Publisher Standards Australia
    Status Superseded
    Superseded By
    Supersedes
    Under Revision

    History - (Show below) - (Hide below)

    First published as part of AS 1827-1975.Revised and redesignated as AS 2275.1-1979.AS 2275.2 first published 1979.AS 2275.1-1979 and AS 2275.2-1979 jointly revised, amalgamated and redesignated in part as AS/NZS 61779.3:2000. First published as part of AS 1827-1975. Revised and redesignated as AS 2275.1-1979. AS 2275.2 first published 1979. AS 2275.1-1979 and AS 2275.2-1979 jointly revised, amalgamated and redesignated in part as AS/NZS 61779.3:2000.

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

    AS 4976-2008 The removal and disposal of underground petroleum storage tanks
    HB 13-2007 Electrical equipment for hazardous areas
    HB 13-2000 Electrical equipment for hazardous areas
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