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DIN EN 12259-5:2002
Fixed firefighting systems - Components for sprinkler and water spray systems - Part 5: Water flow detectors
The document specifies requirements for construction and performance and tests for water flow detectors for use in wet pipe automatic sprinkler systems conforming to EN 12845 Automatic sprinkler systems: Design and Installation. Auxiliary components and attachments to water flow detectors are not covered by this standard.
Deutsches Institut für Normung [din]