Potential Equalization - Siemens SITRANS FM MAG 3100 Operating Instructions Manual

Nominal
size
Liner PFA, PTFE,
Ebonite
mm inch Min Max
65 2½ 13.4 14
80 3 7.8 8
100 4 11.0 12
125 5 19.5 20
150 6 26.1 27
200 8 26.0 27
250 10 43.3 45
300 12 41.2 43
350 14 52.0 55
400 16 74.6 78
450 18 73.9 78
500 20 89.6 94
600 24 129.4 136
700 28 - -
750 30 - -
800 32 - -
900 36 - -
1000 40 - -
1050 42 - -
1100 44 - -
1200 48 - -
1400 54 - -
1500 59 - -
1600 66 - -
1800 72 - -
2000 78 - -
2200 87 - -
4.4

Potential equalization

To obtain optimum results from the measuring system, the sensor must have the same electrical
potential as the liquid being measured.
This is achieved by means of built-in grounding electrodes.
SITRANS FM MAG 3100
Operating Instructions, 12/2021, A5E03005599-AE
JIS B2220
10K
Soft rubber, PFA, PTFE,
EPDM, Linatex Ebonite
Min Max Min
10.9 11 16.3
6.4 7 26.0
9.3 10 37.4
16.8 18 60.3
22.9 24 32.5
23.3 25 45.4
39.3 41 77.1
38.1 40 74.8
47.9 50 116.4
69.0 72 146.2
68.7 72 149.2
83.7 88 179.0
121.9 128 241.4
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
20K
Soft rubber,
EPDM, Linatex
Max Min Max
17 13.2 14
27 21.3 22
39 31.5 33
63 51.6 54
34 28.2 30
48 40.4 42
81 69.2 73
79 68.1 71
122 106.0 111
154 134.3 141
157 137.5 144
188 165.9 174
253 225.7 237
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
Installing/Mounting
4.4 Potential equalization
AWWA C-207
Class D
PFA, PTFE, Soft rubber,
Ebonite EPDM, Linatex
Min Max Min
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
124.1 130 116.9
139.4 146 131.7
188.4 198 178.3
204.2 214 194.1
222.8 234 212.3
246.8 259 233.7
241.4 254 230.7
257.7 271 246.8
373.4 392 360.8
388.6 408 374.0
471.5 495 452.6
480.8 505 464.1
592.6 622 575.3
802.5 843 -
Max
-
-
-
-
-
-
-
-
-
-
-
-
-
123
138
187
204
223
245
242
259
379
393
475
487
604
-
39