68
Model 8715 DP-C
ALC
™ Micromanometer and Model 8380 A
CCU
B
ALANCE
®
Air Balancing Tool
Performance Data
Performance data obtained in HVAC test laboratory using two high-accuracy flow stations as flow
measurement standards. The flow stations were mounted in sealed ductwork upstream of the tested
Swirl Diffusers.
-20
-10
0
10
20
30
40
0
100
200
300
400
500
600
700
M
ea
su
rem
en
t
Er
ro
r
[%
o
f
Fl
o
w
]
Flow [m
3
/hr]
8380 Performance Data
(Swirl Diffuser on 200mm Dia. Duct)
8380 with Swirl-X
8380 (No Swirl-X)
8380 Allowed Tolerance
-20
-10
0
10
20
30
40
0
200
400
600
800
1000
1200
M
ea
su
re
m
en
t E
rr
o
r
[%
o
f F
lo
w
]
Flow [m
3
/hr]
8380 Performance Data
(Swirl Diffuser on 300mm Dia. Duct)
8380 with Swirl-X
8380 (no Swirl-X)
8380 Allowed Tolerance
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