Constant cross-section, variable area flowmeter

✍ Scribed by E. Kehat

• Publisher: Elsevier Science
• Year: 1965
• Tongue: English
• Weight: 397 KB
• Volume: 20
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(65)80055-0

✦ Synopsis

Abe&act-A cm&ant cross-section, variable area flowmeter is described. It consists of a rotameter type float fitting closely inside a slitted tube. For a properly designed flowmeter the calibration curve is linear over a wide range of flow rates. Design data for this flowmeter are given.

Discharge coetBcients through the slits and past the float were determined for water and air from calibration curves of tubes 2.0 and 3-O cm in diameter and floats with a range of weights of 324-256-8 g. THE object of this work was the development of a cheap, easy to fabricate flowmeter that will operate over a wide range of flow rates, and that will give linear calibration curves of flow rates against an indicator position.

DANCKWERTS and SIKDER [l] have developed a constant cross-section, variable area flowmeter, using a rotameter type bob inside a perforated tube. This work extends their work to a higher flow range, and to linear calibration curves.