GE PanaFlow MV80, User Manual

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Appendix D. Glossary
144 PanaFlow™ MV80 & MV82 User’s Manual
Hz
Hertz, cycles per second
In-Line Flowmeter A flowmeter which includes a short section of piping which is put in-line with the user's piping
Insertion
FlowMeter
A flowmeter which is inserted into a hole in the user's pipeline
Joule
A unit of energy equal to one watt for one second; also equal to a Newton-meter
LCD Liquid crystal display
•
m
Mass flow rate
mA
Milliampere, one thousandth of an ampere of current
µ
Viscosity, a measure of a fluid's resistance to shear stress. Honey has high viscosity, alcohol has
low viscosity
nm3/hr
Normal cubic meters per hour (flow rate converted to normal conditions,
as shipped 101 kPa and 0° C). User definable.
Δ
P
Permanent pressure loss
P Line pressure (psia or bar absolute)
ρ
act
The density of a fluid at the actual temperature and pressure operating conditions
ρ
std
The density of a fluid at standard conditions (usually 14.7 psia and 20° C)
Permanent
Pressure Loss
Unrecoverable drop in pressure
Piezoelectric
Crystal A material which generates an electrical charge when the material is put under stress
PRTD
Resistance temperature detector (RTD) with platinum element. Used because of high stability
psia
Pounds per square inch absolute (equals psig + atmospheric pressure). Atmospheric pressure is
typically 14.696 psi at sea level