BS EN 50281-3:2002 PDF

Published Date: 07/31/2014

Explosive atmospheres-Protection of equipment and transmission systems using optical radiation

Published Date: 07/31/2011

Explosive atmospheres-Equipment with equipment protection level (EPL) Ga

Published Date: 05/31/2011

Explosive atmospheres-Equipment protection by pressurized room "p"

Published Date: 02/28/2007

Electrical apparatus for use in the presence of combustible dust-Protection by enclosures "tD"

Published Date: 05/31/2006

Electrical apparatus for explosive gas atmospheres-Fieldbus intrinsically safe concept (FISCO) and fieldbus non-incendive concept (FNICO)

Published Date: 10/26/2004

Electrical apparatus for use in the presence of combustible dust-Classification of areas where combustible dusts are or may be present

Published Date: 10/31/2002

Electrical apparatus for use in the presence of combustible dust. Electrical apparatus protected by enclosures-Construction and testing

Published Date: 10/18/2002

Electrical apparatus for use in the presence of combustible dust-Classification of areas where combustible dusts are or may be present

Published Date: 06/15/2001

Guide for selection, installation, use and maintenance of apparatus for the detection and measurement of combustible gases or oxygen

Published Date: 09/15/2000

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

Published Date: 09/15/2000

Electrical apparatus for the detection and measurement of flammable gases-Performance requirements for group II apparatus indicating a volume fraction up to 100% lower explosive limit

Published Date: 06/15/1999

Electrical apparatus for the detection and measurement of combustible gases. General requirements and test methods

Published Date: 05/15/1999

Electrical apparatus for the detection and measurement of combustible gases. Performance requirements for Group I apparatus indicating up to 5 % (V/V) methane in air

Published Date: 01/15/1999

Electrical apparatus for the detection and measurement of combustible gases. Performance requirements for Group II apparatus indicating up to 100% lower explosive limit

Published Date: 01/15/1999

Electrical apparatus for the detection and measurement of combustible gases. Performance requirements for Group II apparatus indicating up to 100% (V/V) gas

Published Date: 01/31/1992

Electrical apparatus for the detection and measurement of combustible gases. General requirements and test methods

Published Date: 12/20/1991

Electrical apparatus for the detection and measurement of combustible gases. Performance requirements for Group I apparatus indicating up to 5 % (V/V) methane in air

Published Date: 12/20/1991

Specification for electrical apparatus for the detection and measurement of combustible gases. Performance requirements for Group I apparatus indicating up to 100 % (V/V) methane

Published Date: 12/20/1991

Electrical apparatus for the detection and measurement of combustible gases. Performance requirements for Group II apparatus indicating up to 100 % lower explosive limit

Published Date: 12/20/1991

Specification for electrical apparatus for the detection and measurement of combustible gases. Performance requirements for Group II apparatus indicating up to 100 % (V/V) gas

Published Date: 11/30/1988

Instruments for the detection of combustible gases-Specification for general requirements and test methods

Published Date: 11/30/1988

Instruments for the detection of combustible gases-Specification for safety and performance requirements for Group I instruments reading up to 5% methane in air

Published Date: 11/30/1988

Instruments for the detection of combustible gases-Specification for safety and performance requirements for Group I instruments reading up to 100% methane

Published Date: 11/30/1988

Instruments for the detection of combustible gases-Specification for performance requirements for Group II instruments reading up to 100% lower explosive limit

Published Date: 11/30/1988

Instruments for the detection of combustible gases-Specification for performance requirements for Group II instruments reading up to 100% gas

Published Date: 09/30/1985

Electrical apparatus with protection by enclosure for use in the presence of combustible dusts-Specification for apparatus

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Contest Directors Guide

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CMASS Plan Book

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Lower Tropospheric Probe

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Model Rocket Classroom Activities

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Rocketry Electrical Projects

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Guide to Competition for the Casual Competitor