GEORGE FISCHER +GF+ SIGNET 2550, Instruction Manual

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2.6 Grounding requirements
The 2550, like all magnetic flow sensors, is
sensitive to electrical noise which is present in most
piping systems. The grounding procedure
illustrated below is necessary in all installations to
insure proper performance.
Connect a local earth ground to the TS5 terminal
strip as illustrated (EG1). If the cable from power
source to the 2550 is less than 200 ft./61m,
EG2 is an acceptable alternative. Using both
EG1 and EG2 is always the best system.
6
Local
Earth Ground #1
(EG1)
24 VDC 1A
Power Supply
-
+
2550
AC+
ACN
Earth Ground #2 (EG2)
110
VAC
1
2
1
2
1
2
3
4
1
2
1
2
3
4
4-20 TS3
R+
R-
TS4
B
A
TS2
RS485
BLK
RED
SHLD
SHLD
-
+
24V
TS1
TS5
Process Pipe