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Pipe Size ANSI
Pipe Wall Inches
(DIN)
(mm)
18 (450)
<0.38 (9.7)
<0.50 (12.7)
20 (500)
<0.38 (9.7)
<0.50 (12.7)
24 (600)
<0.38 (9.7)
<0.50 (12.7)
Installing the Dampening Material, Transducers and Fixtures
Table 3-2: PT878GC Installation Requirements for Natural Gas (Continued)
Transducer
Min. Pressure
MHz
psig (bar)
0.2
300 (21.7)
0.2
800 (56.2)
0.2
300 (21.7)
0.2
800 (56.2)
0.2
300 (21.7)
0.2
800 (56.2)
Maximum Velocity, ft/s (m/s)
Single Traverse
Dual Traverse
78 (23.8)
59 (18.0)
70 (21.3)
52 (15.9)
56 (17.1)
42 (12.8)
April 2009
Triple Traverse
Four Traverse
47 (14.3)
42 (12.8)
34 (10.4)
3-8
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