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Electrical equipment used for detection and concentration measurement of refrigerant gases. Performance requirements and test methods Ingestion-build-183511 BS 3987 specifies requirements for1 Scope This document specifies general requirements for the construction, testing and performance of electrically operated refrigerant fixed gas detection equipment in safety applications. This document does not specify requirements for portable locating leak detectors for refrigerant application as already covered by EN 14624: 2012. This document is applicable to equipment whose primary purpose is to provide an indication, alarm and or other output