Series 220/221 Instruction Manual
Appendix B Glossary
Appendix B Glossary
A B C D
A
Cross sectional area.
acfm
Actual cubic feet per minute (volumetric flow rate).
ASME
American Society of Mechanical Engineers.
Bluff Body
A non-streamlined body placed into a flow stream to
create vortices. Also called a Shedder Bar.
BTU
British Thermal Unit, an energy measurement.
Cenelec
European Electrical Code.
Compressibility
A factor used to correct for the non-ideal changes in
Factor
a fluid’s density due to changes in temperature
and/or pressure.
CSA
Canadian Standards Association.
d
Width of a bluff body or shedder bar.
D
Diameter of a flow channel.
E F G H
f
Frequency of vortices generated in a vortex flow
meter, usually in Hz.
Flow Channel
A pipe, duct, stack, or channel containing flowing fluid.
Flow Profile
A map of the fluid velocity vector (usually non-
uniform) in a cross-sectional plane of a flow channel
(usually along a diameter).
FM Factory
Mutual.
Ft
Foot, 12 inches, a measure of length.
Ft^2
Square feet, measure of area.
Ft^3
Cubic feet, measure of volume.
gpm
Gallons per minute.
Hz
Hertz, cycles per second.
IM-22-C
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