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1
Flow Measurement - Halaman 165
The rotameter tends to be self-cleaning. The velocity of the flow past the float and the freedom of the float to move vertically enable the meter to clean itself of some buildup of foreign material. Liquids with fibrous materials are one of the ...
2
Instrument Engineers' Handbook, Fourth Edition, Volume ...
2.27d Variation in the shape of rotameter floats. The float on the right is provided with slots, which caused the early floats to rotate (for stabilizing and centering purposes); hence the name "rotameter." the bypass-type rotameter. The capacity of ...
3
Air Monitoring for Toxic Exposures - Halaman 141
Henry J. McDermott. Figure 5.12. “Jar” technique for in-line calibration of a respirable dust cyclone. Figure 5.14. Rotameter calibration data sheet. Figure 5.15. Example rotameter. 2. Start the pump and adjust the pump flow setting control ...
4
Transport Phenomena: A Unified Approach - Jilid 2 - Halaman 471
10.4.3 Rotameter A rotameter consists of a float, free to move, within a tapered glass tube as shown in Figs. 10.23, 10.24, and 10.25. The position of the float is noted visually and correlated with the mass flow rate. Rotameters are classed as ...
Robert S. Brodkey, Harry C. Hershey,
2003
5
Definitions, Conversions, and Calculations for ... - Halaman A-12
Where: X = the required scale reading on a rotameter carrying a gas other than air or nitrogen, i.e., the scale reading that will be required in order to indicate that the flow rate of the alternative gas is numerically equivalent to some particular ...
6
A Brief Introduction To Fluid Mechanics - Halaman L-21
Objective: The flowrate, Q, through a rotameter can be determined from the scale reading, SR, which indicates the vertical position of the float within the tapered tube of the rotameter as shown in Fig. P7.61. Clearly, for a given scale reading, ...
Donald F. Young, Bruce R. Munson, Theodore H. Okiishi,
2010
7
Fundamentals of Air Sampling - Halaman 50
However, within this range, the only nonconstant term on the right-hand side of Equation 4.10 is the annular orifice area around the float, A,,; thus, the flow rate is linearly proportional to this area (and thus proportional to the height or rotameter ...
8
Engineering Fluid Mechanics - Halaman 512
Rotameter The rotameter, or variable area meter, is frequently seen in laboratories, hospitals, and manufacturing facilities. It consists of slightly tapered, usually transparent, vertical tubes with a float inside. (See Figure 10.12.) The fluid enters ...
9
Chemical Process Engineering: Design And Economics - Halaman 396
(8.26) provided the rotameter coefficient is independent of the fluid being metered, i.e., CR≈CRS . Equation 8.26 may be used for either liquid or gases, but for gases it may be simplified because ρS<<ρF and ρ<<ρF. Thus, Equation 8.26 ...
10
Flow Measurement Methods and Applications - Halaman 11
The rotameter derives its name from early variable-area flowmeters whose float exhibited unstable movement in the fluid stream. To overcome the instability, the float was equipped with fins that caused the float to rotate rapidly and, therefore, ...