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‡ SIGNET
2550 InsertionMagmeter
3.4 Sensor Installation Without Tool
It is recommended that the installation tool always be used when
installing the 2550. If the installation tool is not available, follow
the instructions below. Pay careful attention to the insertion depth
of the sensor in the pipe and the alignment of the electrodes
relative to the pipe.
1.
Loosen three bolts at top of 2550 adjustment nut. Wrap
adjustment nut threads with 3 full wraps of sealing tape and
insert 2550 sensor into fitting. Be sure cable ports are
pointing downstream. Thread adjustment nut securely into
pipe.
2.
Adjust meter height so tip of sensor is 0.20 inches below the
inside diameter of pipe. Calculate the "H" dimension:
H = sensor length - 0.2 in. - wall = 8.1025 in.
- 0.2 in - wall
H = 7.9025 - wall (H = 200 mm - wall thickness)
3.
Align the magmeter parallel with the pipe
±
1
°
. Retighten the
three 3/16 in. bolts to secure the sensor in the pipe.
"H"
Direction of Flow
Process Pipe
Process Pipe
Pipe Top View
Pipe Side View
FLOW
Align Magmeter
with pipe ±1 °
+G
F+
S
IG
NE
T
GEO
RGE FISC
HER
‡
4.
Wiring
To access the wiring terminals in the 2550 loosen six captive
outer cover screws (1), lift off outer cover (2), then loosen two
captive screws (3) and remove access plate (4). A wiring
diagram is located on the inside of the access plate. Five
terminal strips are available.
TS 3 Analog output
4 to 20 mA or 0 to 20 mA output
terminal 1
positive (R+)
terminal 2
negative (R-)
18 to 22 AWG wire recommended.
TS 4 Serial communication
Future expansion not available in this model.
TS 2 Frequency output
terminal 1
black
5 to 12 VDC in
terminal 2
red
open collector pulse out
terminal 3/4
shield
cable shield/gnd
(See sec 4.4 for detailed information.)
18 to 22 AWG wire recommended.
TS 1 Power input
terminal 1
negative
terminal 2
positive
14 to 20 AWG wire recommended.
Recommended power supply:
Model no. HB24-1.2A (24 V @ 1.2 A) or equivalent
Power-One, Inc., Camarillo, Ca. U.S.A.
Phone: 805/987-8741
Toll free: 800/678-9445
Fax: 805/388-0476
TS 5 Case
Chassis ground terminals; see section 3.1.
Fuse
1
2
1
2
1
2
3
4
1
2
4-20 TS3
R+
TS4
B
A
TS2
RS485
BLK
RED
SHLD
SHLD
-
+
24V
TS1
P
ower Input
R
-
Wiring
Diagram
3/4 A
SLO-BLO
1
2
3
4
TS5
Case
3-2550.610-B
Analog Output
(Internally powered)
Serial
Communication
Frequency
Output
FLOW
GEORGE FISCHER
+GF+
1
2
3
RUN
EDIT
ENTER
FLOW
4
+GF+ SIGNET
All wiring is installed through the watertight ports in the meter.
Wrap threads with sealing tape before threading into sockets.
