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BSI BS 2811: AMD 986: June 1972

Publication Date: Dec 31, 1969
SDO: BSI: British Standards Institution
 DOD Adopted   ANSI Approved Approved

Requirements of construction and operation of instruments designed to measure the optical density of or percentage obscuration caused by smoke emitted from chimneys.

Smoke detectors
SI system (metric)
Alarm systems
Warning devices
Marking
Safety devices
Signal devices
Installation
Accuracy
Recording instruments (measurement)

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