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Effect of Turbulence on Vortex-shedding Air-velocity Transducers.

Authors
Cohen-AF
Source
MISSING :13 pages
Link
NIOSHTIC No.
10004335
Abstract
When location guidelines are followed in choosing sites for fixed- point velocity transducers for use in underground coal mine monitoring, mine air turbulence intensities <11 pct are generally expected at those sites. The objective of this Bureau of Mines investigation was to determine the effect of turbulence intensities <11 pct on vortex-shedding sensors and transducers. Measurements were made at velocity levels of interest for underground coal mine monitoring use ( 200, 500, 1,000, 1,500 ft/min.). The effect of grid-produced turbulence intensities (2 pct to 14 pct) on the output of vortex-shedding air-velocity transducers was less than +/- 10 pct.
Publication Date
19850101
Document Type
IH; Information Circular;
Fiscal Year
1985
NTIS Accession No.
NTIS Price
Identifying No.
IC 9003
NIOSH Division
PRC;
Source Name
MISSING
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