DigitalFlow™ GC868 Startup Guide (1 and 2-Channel)
1-4
Chapter 1. Installation
3.
With the pipe size and pipe wall thickness, determine if your application meets
the minimum pressure requirements.
4.
Use the same row in the appropriate table to determine the maximum flow
velocity capability of the GC868. For reference, the table provides the
recommended number of traverses and transducer frequency for your
application.
Note:
All provided data is based on metal pipes; plastic pipes must have air at
ambient pressure or other gases with a density of 0.074 lbs.ft
3
(0.109 kg/m
3
).
Consult the factory for applications involving natural gas with sulfur or high
carbon dioxide content, or for applications not listed in the tables.
Table 1-1: GC868 Installation Requirements for Air, Nitrogen, Oxygen or Argon
Pipe
Size
ANSI
(DIN)
Pipe Wall
Inches
(mm)
Transduc
er
MHz
Min.
Pressure
psig
(bar)
Maximum Velocity, ft/s (m/s)
Single
Travers
e
Dual
Traverse
Triple
Traverse
Four
Travers
e
Five
Travers
e
3/4
(20)
<0.07 (1.8)
1
60 (5.1)
—
—
90 (27.4)
—
90
(27.4)
1 (25)
<0.14 (3.6)
1
60 (5.1)
—
—
90 (27.4)
—
90
(27.4)
1 1/2
(40)
<0.15 (3.8)
1
60 (5.1)
—
—
90 (27.4)
—
57 (17.4)
2 (50)
<0.16 (4.1)
1
60 (5.1)
90 (27.4)
—
75 (22.9)
—
45 (13.7)
3 (75)
<0.2 (5.1)
1
60 (5.1)
120
(36.6)
96 (29.3) 69 (21.0) 46 (14.0)
—
<0.22 (5.6)
0.5
4 (100)
<0.2 (5.1)
1
60 (5.1)
120
(36.6)
96 (29.3) 53 (16.2) 35 (10.7)
—
<0.24 (6.1)
0.5
60 (5.1)
<0.34 (8.6)
0.5
180 (13.4)
<0.68 (17.3)
0.5
300 (21.7)
6 (150)
<0.2 (5.1)
1
60 (5.1)
90 (27.4) 72 (22.0) 54 (16.5)
—
—
<0.28 (7.2)
0.5
60 (5.1)
0.2
200 (13.6)
135
(41.5)
108
(32.9)
81 (24.7)
<0.44 (11.2)
0.5
180 (13.4) 90 (27.4) 72 (22.0) 54 (16.5)
0.2
600
(40.8)
135
(41.5)
108
(32.9)
81 (24.7)
<0.87 (22.1)
0.5
300 (21.7) 90 (27.4) 72 (22.0) 54 (16.5)
0.2
1000 (68)
135
(41.5)
108
(32.9)
81 (24.7)
