IEC 61779-4:1998 ED1

Electrical apparatus for the detection and measurement of flammable gases - Part 4: Performance requirements for group II apparatus indicating up to 100% lower explosive limit

Publication date:   Apr 23, 1998

General information

99.60 Withdrawal effective   Aug 9, 2007

IEC

TC 31 Equipment for explosive atmospheres

International Standard

17.060   Measurement of volume, mass, density, viscosity | 29.260.20   Electrical apparatus for explosive atmospheres

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Scope

Specifies requirements for group II (as defined in part 1) portable, transportable and fixed apparatus for the detectino and measurement of combustible gas or vapour concentrations with air. The apparatus, or parts thereof, may be installed or used in potentially explosive atmospheres, other than mines susceptible to firedamp (i.e. group I).

This standard is restricted to apparatus intended for the detection and measurement of combustible gas or vapour concentrations with air up to 100% lower explosive limit (LEL).

Life cycle

NOW

WITHDRAWN
IEC 61779-4:1998 ED1
99.60 Withdrawal effective
Aug 9, 2007

REVISED BY

WITHDRAWN
IEC 60079-29-1:2007 ED1

ABANDON
IEC 61779-4 ED2