Panametrics PanaFlow MV80, User Manual, Page: 178 / 184

Appendix D. Glossary
166 PanaFlow™ MV80, MV82 & MV84 User’s Manual
Insertion

Flow Meter
A flow meter 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.

P
Permanent pressure loss
P Line pressure (psia or bar absolute)

act
The density of a fluid at the actual temperature and pressure operating conditions

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
psig Pounds per square inch gauge
P
V
Liquid vapor pressure at flowing conditions (psia or bar absolute)
Q Flow rate, usually volumetric
Rangeability Highest measurable flow rate divided by the lowest measurable flow rate