Retrotec DM-2A mark II, Руководство пользователя

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Retrotec Energy Innovations, Ltd.
DM-2A Mark II 2008-02-22
•
Flow Pressure The pressure difference between inside the fan (in the flow stream)
and ambient air, outside the fan.
•
Room Pressure
The pressure difference between inside the building/room under
test and the ambient outside air.
•
Pascal (Pa) Often abbreviated to Pa, this represents a very small metric unit of
pressure. There are 249 Pascals in 1 water column. A water column is the pressure
required to push water up 1 inch in a tube. One Pascal = 0.000145 pounds per square
inch.
Abbreviations
•
/h Per hour
•
cfm
Cubic feet per minute
•
cm
2
Square centimeters
•
fpm
Feet per minute
•
fps Feet per second
•
ft
2 Square feet
•
in wc Inches of water column
•
in
2 Square inches
•
km/h Kilometers per hour
•
l/s
Liters per second
•
m/s Meters per second
•
m
2 Square meters
•
m
3
/h Cubic meters per hour
•
m
3
/s
Cubic meters per second
•
mph Miles per hour
•
Pa
Pascals
•
PSF Pounds per square foot
•
Sig Fig
Significant figures
•
l/s/m
2
Liters per second per square meter
•
NLA Normalized leakage area
DM-2A Mark II Dual-Channel Pressure Gauge User Manual
B:
Glossary