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SITRANS F M MAGFLO
Installation
Inlet protection
Effect of temperature and
material on working
pressure
Electromagnetic flowmeter type MAG 3100 W
Metric (Pressures in bar)
PN rated flanges
Material
Flange
group
rating
1C1 (A105) PN 6
PN10
PN16
PN 40
2C1 (304)
PN 6
PN 10
PN 16
PN 40
2C2 (316)
PN 6
PN 10
PN 16
PN 40
ANSI flanges
Material
Flange
group
rating
1.1 (A105)
Cl. 150
2.1 (F304)
Cl. 150
2.2 (F316)
Cl. 150
The above tables show the effect that an increase of temperature or change of material have
on the maximum working pressure of the flange. The values are independent of nominal size.
For intermediate temperatures use value from nearest higher temperature.
Example
For a PN 16 flange in 2C2 (316) material at 80 degrees the maximum working pressure should
be taken as 12.5 bar.
The sensor must be mounted between two
flanges. Gaskets are only necessary when the
flowmeter is installed with protection flanges as
the liner is used in place of gaskets.
Potential equalisation is carried out with the
built-in earthing electrodes. No further action
need to be taken.
Temperature ° ° ° ° ° C
−20
50
100
6.0
5.8
5.6
10.0
9.7
9.4
16.0
15.5
15.0
40.0
38.7
37.5
5.5
5.3
4.5
9.1
8.8
7.5
14.7
14.2
12.1
36.8
35.4
30.3
5.5
5.3
4.6
9.1
8.9
7.8
14.7
14.3
12.5
36.8
35.6
31.3
Temperature ° ° ° ° ° C
−20
38
93
19.7
19.7
17.9
19.0
19.0
15.9
19.0
19.0
16.2
When measuring abrasive liquids the use of
flowmeter inlet protection may be necessary.
Here type C earthing flanges are used.
Imperial (Pressures in Psi)
PN rated flanges
Temperature ° ° ° ° ° F
Material
Flange
−5
group
rating
ASTM A105 PN 6
87
PN 10
145
PN 16
232
PN 40
580
ASTM A240 PN 6
80
304
PN 10
132
PN 16
213
PN 40
534
ASTM A240 PN 6
80
316
PN 10
132
PN 16
213
PN 40
534
ANSI flanges
Temperature ° ° ° ° ° F
Material
Flange
−5
group
rating
ASTM A105 Cl. 150
285
ASTM A240
Cl. 150
275
F304
ASTM A240
Cl. 150
275
F316
122
212
84
81
141
136
225
218
561
544
77
65
128
109
206
175
513
439
77
67
129
113
207
181
516
454
100
200
285
260
275
230
275
235
5
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