M200-102-01
12
I56-6576-001
CLASS C PIPE DESIGNS WITH SINGLE SAMPLE HOLE SIZE (Inc. SAMPLING END HOLE)
AND 10m SPACING ‐ 2 PIPE (T‐FORM)
Pipe
Length
Number
of holes
Hole
size
Air
flow
Flow
balance
Average
sensitivity
Alarm
level
Fan
Total
hole area
(m)
(mm) (I/min)
(%/m)
(mm
2
)
80
X
‐
‐
‐
‐
‐
‐
‐
70
X
‐
‐
‐
‐
‐
‐
‐
60
6
3
45
0.8
1.17
2
6
84.83
50
5
3
44
0.87
0.97
2
8
70.70
40
4
3.5
46
0.89
0.79
2
7
76.98
30
3
4
46
0.93
0.98
3
6
75.41
20
2
5
46
0.96
0.66
3
6
78.55
10
1
6.5
44
1
1.31
5
8
66.37
X: No adequate or recommended single sample hole size design
CLASS B PIPE DESIGNS WITH SINGLE SAMPLE HOLE SIZE (Inc. SAMPLING END HOLE)
AND 10m SPACING 2 PIPE (T‐FORM)
Each
pipe
Number
of holes
Hole
size
End
hole
Air
flow
Flow
balance
Average
sensitivity
Alarm
level
Fan Total
hole area
(m)
(per pipe) (mm) (mm) (I/min)
(%/m)
(mm
2
)
50
3
5
5
45
0.84
0.40
1
4 117.83
40
3
4.5
4.5
46
0.89
0.40
1
5
95.44
30
3
4
4
46
0.93
0.40
1
7
75.41
20
2
5
5
46
0.96
0.40
2
6
78.55
10
1
6.5
6.5
44
1
0.33
3
8
66.37
CLASS B PIPE DESIGNS WITH SINGLE SAMPLE HOLE SIZE (Inc. SAMPLING END HOLE)
AND 10m SPACING 1 PIPE
Pipe
Length
Number
of holes
Hole
size
End
hole
Air
flow
Flow
balance
Average
sensitivity
Alarm
level
Fan Total hole
area
(m)
(mm) (mm) (I/min)
(%/m)
(mm
2
)
80
X
‐
‐
‐
‐
‐
‐
‐
‐
70
6
4
4
39
0.68
0.40
1
10
75.41
60
6
4
4
43
0.7
0.39
1
10
75.41
50
5
5.5
5.5
45
0.54
0.34
1
8
118.81
40
4
6
6
46
0.65
0.40
2
8
113.11
30
3
6.5
6.5
45
0.78
0.30
2
8
99.56
20
2
6.5
6.5
44
0.94
0.33
3
10
66.37
10
X
‐
‐
‐
‐
‐
‐
‐
‐
X: No adequate or recommended single sample hole size design