3
INSTALLATION
14
OPTIFLUX 2070
www.krohne.com
04/2008 • 4000243601
3.5.10 Grounding
3.6 Installation
Here you find the maximum pressure and torques for the flowmeter. All values are theoretical
and calculated for optimum conditions and use with carbon steel flanges.
Figure 3-12:
The grounding of the flowmeter
1
Metal pipelines, not internally coated. Grounding without grounding rings!
2
Metal pipelines with internal coating and non-conductive pipelines. Grounding with grounding rings!
3
Grounding rings
CAUTION!
The grounding of the flowmeter provides a stable and accurate measurement.
Nominal size
DN [mm]
Pressure
rating
Bolts
Max. torque [Nm]
Polypropylene
Hardrubber
50
PN 40
4 × M 16
55
31
65
PN 16
4 x M 16
51
42
80
PN 40
8 × M 16
47
25
100
PN 16
8 × M 16
39
30
125
PN 16
8 x M 16
53
40
150
PN 16
8 × M 20
68
47
200
PN 10
8 × M 20
-
68
250
PN 10
12 x M 20
-
65
300
PN 10
12 x M 20
-
76
350
PN 10
16 x M 20
-
75
400
PN 10
16 x M 24
-
104
450
PN 10
20 x M 24
-
93
500
PN 10
20 x M 24
-
107
600
PN 10
20 x M 27
-
138
