Fixed firefighting systems. Components for gas extinguishing systems - Requirements and test methods for pressure gauges and pressure switches Ingestion-build-47182 BS EN 4020:2009 Aerospace series

BS EN 4020:2009  Aerospace series

but not limited to:

6 Concept-related e-support

Additional support tools

The standard specifies compulsory functions which shall be provided on all electrical automatic control and delay devices and optional functions (options with requirements) which may be provided

Fixed firefighting systems. Components for gas extinguishing systems - Requirements and test methods for pressure gauges and pressure switches Ingestion-build-47182 BS EN 4020:2009 Aerospace seriesThis European Standard specifies requirements and describes test methods for pressure gauges and pressure switches. This European Standard is applicable for pressure gauges for monitoring of pilot, control, alarm and storage containers of fire extinguishing systems filled with non liquefied inert gases or pressurized halocarbon gases. This European Standard is applicable for pressure switches for monitoring of pilot, control, alarm and storage