Nailor D30RW - Page 32

Page 2 of 2
Calgary, Canada
Tel: 403-279-8619
Fax: 403-279-5035
Houston, Texas
Tel: 281-590-1172
Fax: 281-590-3086
Las Vegas, Nevada
Tel: 702-648-5400
Fax: 702-638-0400
Toronto, Canada
Tel: 416-744-3300
Fax: 416-744-3360
"Complete Air Control and Distribution Solutions."
www.nailor.com
3/20 IOM-VAVK (Supercedes 8/12)
Model Series:
30HQX Single Duct Exhaust (Hospital Grade)
30X Single Duct Exhaust
Equations:
Q = K x ∆P ∆P = (
___
)
2
F = (
________
)
2
Where: Q = Airflow Rate (cfm)
∆P = Sensor Differential Pressure ("w.g.)
K = K-Factor Calibration Constant (standard air)
F = Amplification Factor (sensor gain)
A = Nom. Duct Area (sq. ft.)
The K-Factors tabulated in the above tables are the
airflow required to produce a 1.0" w.g. differential
pressure at the Diamond Flow Sensor.
Q
K
4005 x A
K
Inlet
Size
Type
Value Inlet
Size
(inches)
Valve Inlet
Area
(sq. ft.)
K-Factor
(cfm)
Velocity
(fpm)
F-Factor
(amp.)
4
SQUARE
OR
RECT.
3.4 x 3.4 0.080 210 2625 2.33
5
4.3 x 4.3 0.128 345 2695 2.21
6
5.5 x 5.5 0.210 580 2762 2.10
7
5.8 x 6.3 0.254 680 2677 2.24
8
6.7 x 7.2 0.335 970 2896 1.91
9
8.6 x 7.1 0.424 1209 2851 1.97
10
9.5 x 8.0 0.528 1539 2915 1.89
12
13.6 x 8.1 0.765 2269 2966 1.82
14
12.9 x 10.8 0.968 2521 2604 2.36
16
18.3 x 10.8 1.373 3586 2612 2.35
24 x 16
26.1 x 16.3 2.954 7009 2373 2.85