BS 2811:1969
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Specification for smoke density indicators and recorders
Hardcopy , PDF
02-01-2009
English
12-31-1969
Important note : All end users must be registered with an Account prior to user licenses being assigned.
Co-operating organizations
Foreword
Specification
1 General requirements
1.1 Scope
1.2 Definitions
1.3 Description
2 Requirements for the smoke density indicator
2.1 Light beam length
2.2 Flow of air into the flue
2.3 Length of cable between units
2.4 Protection
2.5 Cleaning and servicing
2.6 Electrical safety
2.7 Wiring
2.8 Connections for alarms and recorders
2.9 Accuracy
2.10 Instrument stability
2.11 Ranging
2.12 Supply voltage variation
2.13 Temperatures
2.14 Marking
3 Requirements for components
3.1 Indicating meter
3.2 Recorder (when fitted)
3.3 Alarm (when fitted)
Appendices
A Guidance on the installation of smoke density
indicators
B Guidance on setting the alarm point
Requirements of construction and operation of instruments designed to measure the optical density of or percentage obscuration caused by smoke emitted from chimneys.
| Committee |
EH/2/1
|
| DevelopmentNote |
Reviewed and confirmed by BSI, June, 2005. (05/2005)
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
| BS 2741:1969 | Recommendations for the construction of simple smoke viewers |
| BS 2742:Addendum No. 1:1972 | Notes of the use of Ringelmann and miniature smoke charts. The calibration of instruments in Ringelmann number |
| BS 2741:1969 | Recommendations for the construction of simple smoke viewers |
| BS 2740:1969 | Specification for simple smoke alarms and alarm metering devices |
| BS 90:1975 | Specification for direct-acting electrical recording instruments and their accessories |
| BS 89:1954 | Electrical indicating instruments |
| BS 2643:1955 | Glossary of terms relating to the performance of measuring instruments |
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