BS EN 50543:2011

This standard BS EN 50543:2011 Electronic portable and transportable apparatus designed to detect and measure carbon dioxide and/or carbon monoxide in indoor ambient air. Requirements and test methods is classified in these ICS categories:

• 13.320 Alarm and warning systems

This European Standard specifies requirements for the construction, testing and performance of electronic portable and transportable apparatus for the detection and measurement of carbon dioxide (CO₂) and/or carbon monoxide (CO) in indoor ambient air, which includes air entering mechanical ventilation systems in domestic residential, commercial and industrial premises and public buildings.

This European Standard includes indoor air quality apparatus with CO and CO₂ measuring capabilities.

This European Standard excludes:

1. • apparatus used in workplace atmospheres for the direct detection and direct concentration measurement of toxic gases and vapours (i.e. conforming to EN 45544 series);

2. • electronic portable combustion gas analysers (i.e. conforming to EN 50379 series);

3. • apparatus for the detection of carbon monoxide in domestic premises (i.e. conforming to EN 50291 series).

   NOTE 1 Examples of applications are monitoring indoor air quality, measuring CO and/or CO2 ^{concentrations in} commercial laundry and kitchen environments, assessing the safe operation of appliances installed in compartments.

   NOTE 2 When this apparatus is used in industrial premises national regulations may apply.