BS EN 50402:2017 PDF

Scope: What is BS EN 50402 - Functional safety of gas detection systems about ? BS EN 50402 is a European Standard that discusses electrical apparatus for the detection and measurement of combustible or toxic gases or vapours or of oxygen. BS EN 50402 is applicable to detection and measurement apparatus and systems for flammable or toxic gases or vapours or oxygen. It covers apparatus intended to measure reliably, gas concentration and to provide an output signal (alarm and/or measurement signal), the purpose of which is to give a warning of a potential hazard. BS EN 50402 is dedicated to manufacturers and is applicable to gas detection systems or parts of them (e.g. gas detection transmitters or gas detection control units) as basis for functional safety testing. Information important for the safe use of the device (gas detection system) will be specified in the instruction manual. Note: Applications requiring a SIL capability of 4 for a gas detection system are not practicable...

BS EN 50402:2017 history

2017 BS EN 50402:2017 Electrical apparatus for the detection and measurement of combustible or toxic gases or vapours or of oxygen. Requirements on the functional safety of gas detection systems
2005 BS EN 50402:2005+A1:2008 Electrical apparatus for the detection and measurement of combustible or toxic gases or vapours or of oxygen. Requirements on the functional safety of fixed gas detection systems
2005 BS EN 50402:2005 Electrical apparatus for the detection and measurement of combustible or toxic gases or vapours or of oxygen - Requirements on the functional safety of fixed gas detection systems