16 / 20
VAV Box
Models
Main Features
•
Mechanical amplification of differential pressure signal
•
2 outputs (total pressure and static pressure)
•
Advanced design minimizes pressure loss and white
noise
Air Flow Stations
Mechanically amplifies the differential pressure signal
making air velocity measurement in VAV boxes possible.
Nepcross
Inlet Diameter
6” (15.25 cm)
8” (20.30 cm)
10” (25.40 cm)
12” (30.50 cm)
14” (35.56 cm)
16” (40.64 cm)
Area
0.196 ft2
(0.018 m2)
0.349 ft2
(0.032 m2)
0.545 ft2
(0.050 m2)
0.785 ft2
(0.073 m2)
1.069 ft2
(0.099 m2)
1.396 ft2
(0.130 m2)
Velocity Constant
2812 FPM
(14.3 m/s)
2740 FPM
(13.9 m/s)
2841 FPM
(14.4 m/s)
2822 FPM
(14.3 m/s)
2666 FPM
(13.5 m/s)
2837 FPM
(14.4 m/s)
Velocity Pressure Constant
0.49
0.47
0.50
0.49
0.45
0.50
K Factor
552 CFM
(261 l/s)
956 CFM
(451 l/s)
1550 CFM
(732 l/s)
2216 CFM
(1046 l/s)
2850 CFM
(1345 l/s)
3961 CFM
(1869 l/s)
Amplification Factor F
2.60
2.30
2.30
2.15
2.15
2.10
Total Pressure Ports
(ASHRAE Standard 62)
12
12
16
16
20
20
Velocity Range
300 to 3,000 FPM (1.5 to 15.2 m/s)
Temperature Range
-40°C to 80°C (-40°F to 176°F)
Materials
Aluminum & PC/ABS
Description
CF-06
CF-08
CF-10
CF-12
CF-14
CF-16
nep t ron i c . com