Data Sheet for Product

Unrestricted
Siemens Industry, Inc.
Page 9 of 12
Table 4. Flow Range for Orifice Air Flow Sensor.
Flow Range for Sensor “A”
Inlet Size
Maximum Flow @ 1.0” dp
Minimum Flow @ 0.02” dp
Flow Sensor Inlet Area
Flow
Coefficient
CFM.
Lps
CFM
Lps
SQ. FT
M
2
4
252
119
36
17
0.087
0.008
0.721
6
627
296
89
42
0.196
0.018
0.797
7
857
404
121
57
0.267
0.025
0.801
8
1049
495
148
70
0.349
0.032
0.750
9
1389
656
196
93
0.442
0.041
0.785
10
1686
796
238
112
0.545
0.051
0.772
11
2054
969
290
137
0.785
0.073
0.653
12
2394
1130
339
160
0.785
0.073
0.761
14
3254
1536
460
217
1.069
0.099
0.760
16
4429
2090
626
295
1.396
0.130
0.792
18
5591
2639
791
373
1.767
0.164
0.790
Table 5. Flow Range for Sensor – Center-Averaging Multi-Port.
Note: The multi-point flow sensor option is not available for unit sizes 4, 11, and 18.
Flow Range for Sensor “B”
Inlet Size
Maximum Flow @ 1.0” dp
Minimum Flow @ 0.02” dp
Flow Sensor Inlet Area
Flow
Coefficient
CFM.
Lps
CFM
Lps
SQ. FT
M2
6
468
221
66
31
0.196
0.018
0.596
7
673
318
95
45
0.267
0.025
0.629
8
923
436
126
59
0.349
0.032
0.660
9
1155
545
163
77
0.442
0.041
0.652
10
1487
702
210
99
0.545
0.051
0.681
12
2141
1010
303
143
0.785
0.073
0.681
14
3045
1437
431
203
1.069
0.099
0.711
16
4074
1923
576
272
1.396
0.130
0.729
Table 6. Radiated Sound Data for Exhaust Terminal. Sound Power Levels, Lw dB, re 10^-12 Watts.
Pressure
Drop
125 Pa (0.5" W.G.)
250 Pa (1.0" W.G.)
500 Pa (2.0" W.G.)
750 Pa (3.0" W.G.)
Unit
Airflow
Octave Band
Octave Band
Octave Band
Octave Band
Size
Lps
cfm
2
3
4
5
6
7
2
3
4
5
6
7
2
3
4
5
6
7
2
3
4
5
6
7
4
35
75
51
29
27
22
19
17
51
32
30
27
24
24
52
36
33
31
29
31
52
38
35
34
32
35
71
150
52
34
36
31
27
23
52
38
40
35
32
30
53
41
43
40
37
36
53
43
45
42
40
41
106
225
52
38
42
36
31
26
53
41
45
41
36
33
53
45
49
45
41
40
53
47
51
48
44
44
132
279
53
39
45
39
33
28
53
43
48
43
39
35
53
46
52
48
44
42
54
48
54
50
47
46
6
59
125
41
27
23
21
20
20
44
31
27
26
26
26
46
35
32
31
32
33
48
38
34
34
35
37
118
250
44
33
30
29
26
25
46
37
35
34
31
31
49
41
39
39
37
38
50
43
42
41
40
42
177
375
45
36
35
33
29
28
48
40
39
38
35
34
50
44
44
43
40
41
52
46
46
46
44
44
236
500
46
38
38
36
31
30
49
42
42
41
37
36
51
46
47
46
43
43
53
49
50
49
46
47
296
628
47
40
40
39
33
32
50
44
45
44
39
38
52
48
49
49
44
44
54
50
52
51
48
48
7
71
150
43
28
22
21
22
19
45
31
26
25
26
24
46
34
30
29
31
29
47
36
33
31
34
33
142
300
46
33
29
29
27
24
47
36
33
33
32
29
49
39
37
36
37
35
50
41
40
39
40
38
212
450
47
36
33
33
30
27
49
39
37
37
35
32
50
42
42
41
40
38
51
43
44
43
43
41
284
601
48
38
36
37
33
29
50
41
40
40
37
34
51
44
45
44
42
40
52
46
47
46
45
43