• IEC 61779-4 Ed. 1.0 en:1998

IEC 61779-4 Ed. 1.0 en:1998

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

International Electrotechnical Commission, 04/23/1998

Publisher: IEC

File Format: PDF

$15.00$30.00


Published:23/04/1998

Pages:7

File Size:1 file , 45 KB

Note:This product is unavailable in Ukraine, Russia, Belarus

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).

More IEC standard pdf

IEC 62148-15 Ed. 3.0 b:2021

IEC 62148-15 Ed. 3.0 b:2021

Fibre optic active components and devices - Package and interface standards - Part 15: Discrete vertical cavity surface emitting laser packages

$95.00 $190.00

IEC 60050-725 Amd.3 Ed. 2.0 b:2021

IEC 60050-725 Amd.3 Ed. 2.0 b:2021

Amendment 3 - International Electrotechnical Vocabulary (IEV) - Part 725: Space radiocommunications

$6.00 $13.00

IEC 62435-7 Ed. 1.0 b:2020

IEC 62435-7 Ed. 1.0 b:2020

Electronic components - Long-term storage of electronic semiconductor devices - Part 7: Micro-electromechanical devices

$72.00 $145.00

IEC 62899-202-6 Ed. 1.0 en:2020

IEC 62899-202-6 Ed. 1.0 en:2020

Printed electronics - Part 202-6: Materials - Conductive ink - Measurement method for resistance changes under high temperature and humidity - Printed conductive layer on a flexible substrate

$47.00 $95.00