ASTM-D3464 › Historical Revision Information
Standard Test Method for Average Velocity in a Duct Using a Thermal Anemometer
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Scope
1.1 This test method describes the measurement of the average velocity with a thermal anemometer for the purpose of determining gas flow in a stack, duct, or flue
1.2 The range of the test method is from 1 to 30 m/s (3 to 100 ft/s).
1.3 The values stated in SI units are to be regarded as the standard.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Significance and Use
The method presented is a “short method” that may be used where contamination levels are less than 5000 ppm by weight or volume, temperatures are between 0°C (32°F) and 65°C (150°F), and the humidity is not considered. The gas is considered as standard air and the velocity is read directly from the instrument.
This test method is useful for determining air velocities in HVAC ducts, fume hoods, vent stacks of nuclear power stations, and in performing model studies of pollution control devices.
Keywords
air velocity; anemometer; atmospheres; gas velocity; hot wire anemometer; measurements; pitot tube; thermal anemometer; ICS Number Code 17.120.10 (Flow in closed conduits)
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Document Number
ASTM-D3464-96(2007)
Revision Level
1996 R07 EDITION
Status
Superseded
Modification Type
Reapproval
Publication Date
June 1, 2007
Document Type
Test Method
Page Count
4 pages
Committee Number
D22.03