GE PT878GC Manual de usuario Pagina 36

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Menu Maps 3-4
April 2004
*Use 200 kHz
Table 3-1: PT878GC Installation Requirements
Pipe Size
in. (mm)
Transducer
Frequency
(MHz)
Installation Requirements for Minimum Required Pressure with Resultant Maximum Flow
Number of
Traverses
Pipe Wall
Thickness in.
(mm)
Pressure psig (bar) Maximum Flow Velocity ft/s (m/s)
Air NG Air NG Steam
4” (100) 0.5 1 <
0.24 (6.1) 60 (5.1) 150 (11.4) 120 (36.6) 120 (36.6) 120 (36.6)
1<
0.34 (8.6) 180 (13.4) 400 (28.6)
3* <
0.68 (17.3) 300 (21.7) 800 (56.2)
6” (150) 0.5 1 <
0.28 (7.2) 60 (5.1) 150 (11.4) 90 (27.4) 120 (36.6) 120 (36.6)
1<
0.44 (11.2) 180 (13.4) 400 (28.6)
3* <
0.87 (22.1) 300 (21.7) 800 (56.2)
8” (200) 0.5 1 <
0.33 (8.4) 60 (5.1) 175 (13.1) 80 (24.4) 100 (30.5) 100 (30.5)
1<
0.5 (12.7) 180 (13.4) 400 (28.6)
3* <
0.88 (22.4) 300 (21.7) 800 (56.2)
10” (250) 0.5 1 <
0.37 (9.4) 60 (5.1) 200 (14.8) 70 (21.3) 85 (25.9) 85 (25.9)
1<
0.5 (12.7) 180 (13.4) 500 (35.5)
3* <
1.0 (25.4) 300 (21.7) 800 (69)
12” (300) 0.5 1 <
0.38 (9.7) 60 (5.1) 250 (18.3) 55 (16.8) 70 (21.3) 70 (21.3)
1<
0.5 (12.7) 180 (13.4) 500 (35.5)
1<
1.0 (25.4) 300 (21.7) 800 (56.2)
14” (350) 0.2 1 <
0.38 (9.7) 90 (7.2) 300 (21.7) 50 (15.2) 60 (18.3) N/A
1<
0.5 (12.7) 270 (19.6) 800 (56.2)
16” (400) 0.2 1 <
0.38 (9.7) 90 (7.2) 300 (21.7) 40 (12.2) 54 (16.5) N/A
1<
0.5 (12.7) 270 (19.6) 800 (56.2)
18” (450) 0.2 1 <
0.38 (9.7) 90 (7.2) 300 (21.7) 35 (10.7) 50 (15.3) N/A
1<
0.5 (12.7) 270 (19.6) 800 (56.2)
20” (500) 0.2 1 <
0.38 (9.7) 90 (7.2) 300 (21.7) 35 (10.7) 43 (13.1) N/A
1<
0.5 (12.7) 270 (19.6) 800 (56.2)
24” (600) 0.2 1 <
0.38 (9.7) 90 (7.2) 300 (21.7) 30 (9.1) 36 (11) N/A
1<
0.5 (12.7) 270 (19.6) 800 (56.2)
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