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IEC 61779-4:1998 ed1.0
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
7 стр.
Заменен
Электронный (pdf)Печатная копия
32.76 CHF (включая НДС 20%)
Разработчик:
Зарубежные/IEC
ICS:
29.260.20 Electrical apparatus for explosive atmospheres / Электрическое оборудование для взрывоопасной атмосферы17.060 Measurement. Including measuring instruments / Измерение объема, массы, плотности, вязкости. Включая измерительные приборы
Описание
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).