Install Instructions
FLO
(Flow) SUB MENU
For ow measurements the following units are available:
SCFM
- Standard cubic feet per minute
M
3
H
- Cubic meters per hour
FLOr
(Flow Range) SUB MENU
LO
- 99.99 x 1K ow range
HI
- 999.9 x 1K ow range
Tables 3-6 show the ow ranges available, and the maximum duct size that can be set for each input range.
KFAC
SUB MENU
KFAC
K Factor - becomes accessible if the instrument is set for Velocity or Flow. When the DH3 is used with a Pitot
tube, the manufacturer may specify a K Factor. The adjustment range is 0.01 to 2.00. The factory setting is 1.
FLOr
=
LO
Maximum Duct Size (English)
FLOr
=
LO
Maximum Duct Size (Metric)
FLOr
=
HI
Maximum Duct Size (English)
FLOr
=
HI
Maximum Duct Size (Metric)
Table 3
RANGE
IN WC
SFPM
RANGE
MAX. DUCT
SIZE, SQ. FT.
0.1
0.25
0.5
1
2.5
5
10
25
99.99 x 1K
99.99 x 1K
99.99 x 1K
99.99 x 1K
99.99 x 1K
99.99 x 1K
99.99 x 1K
99.99 x 1K
78.9
49.9
35.3
24.9
15.7
11.1
7.8
4.9
Table 5
RANGE
IN WC
M
3
/Hr
RANGE
MAX. DUCT
SIZE M
2
0.1
0.25
0.5
1
2.5
5
10
25
99.99 x 1K
99.99 x 1K
99.99 x 1K
99.99 x 1K
99.99 x 1K
99.99 x 1K
99.99 x 1K
99.99 x 1K
4.32
2.73
1.93
1.37
0.86
0.61
0.43
0.27
Table 6
RANGE
IN WC
M
3
/Hr
RANGE
MAX. DUCT
SIZE M
2
0.1
0.25
0.5
1
2.5
5
10
25
99.99 x 1K
99.99 x 1K
99.99 x 1K
99.99 x 1K
99.99 x 1K
99.99 x 1K
99.99 x 1K
99.99 x 1K
43.19
27.31
19.3
13.64
8.63
6.10
4.31
2.73
Table 4
RANGE
IN WC
SFPM
RANGE
MAX. DUCT
SIZE, SQ. FT.
0.1
0.25
0.5
1
2.5
5
10
25
999.9 x 1K
999.9 x 1K
999.9 x 1K
999.9 x 1K
999.9 x 1K
999.9 x 1K
999.9 x 1K
999.9 x 1K
789.8
499.5
353.1
249.7
157.9
111.7
78.9
49.9