46
RT-SVX071A-EN
Table 9.
Temperature vs. resistance
Temperature
Nominal Resistance
(kOhms)
Degrees °F
Degrees °C
-20
-28.9
170.1
-15
-26.1
143.5
-10
-23.3
121.4
-5
-20.6
103.0
0
-17.8
87.56
5
-15.0
74.65
10
-12.2
63.80
15
-9.4
54.66
20
-6.7
46.94
25
-3.8
40.40
30
-1.1
34.85
35
1.7
30.18
40°
4.4
26.22
45°
7.2
22.85
50°
10.0
19.96
55°
12.8
17.47
60°
15.6
15.33
65°
18.3
13.4
70°
21.1
11.89
75°
23.9
10.50
80°
26.7
9.297
85°
29.4
8.247
90°
32.2
7.330
95°
35.0
6.528
Table 10.
Sizing natural gas pipe mains and branches
Iron Pipe Size (IPS) Inches
Length
of Pipe
(Ft.)
½" Pipe
¾" Pipe
1" Pipe
1¼"
Pipe
1½"
Pipe
15
76
176
345
750
1220
30
52
120
241
535
850
45
43
99
199
435
700
60
38
86
173
380
610
75
-
77
155
345
545
Note:
Capacity of Pipe of Different Diameters and Lengths in Cu. Meter
Per Hr. with Pressure Drop of 74.6 Pa and Specific Gravity of 0.60.
Table 11.
Iron pipe size (SI) millimeters
Iron Pipe Size (SI) Millimeters
Length of
Pipe
(Meters)
15 mm
Pipe
20 mm
Pipe
25 mm
Pipe
32 mm
Pipe
40 mm
Pipe
4.6
2.15
4.98
9.76
21.23
34.54
9.1
1.47
3.39
6.82
15.14
24.06
13.7
1.21
2.80
5.63
12.31
19.82
18.3
1.07
2.43
4.89
10.76
17.27
22.9
—
2.18
4.38
9.76
15.40
Note:
Capacity of Pipe of Different Diameters and Lengths in Cu. Meter Per Hr.
with Pressure Drop of 74.6 Pa and Specific Gravity of 0.60.
Figure 61.
Schematic diagram for field gas piping to
Units
