GEORGE FISCHER +GF+ SIGNET 2550, Instruction Manual

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Measure and record the
interior diameter of the pipe.
This value will be required to
calibrate the 2550.
Interior diameter:
______________________________
Chapter 2
Installation
and wiring
The linearity and accuracy of the 2550 depend
on precise alignment and insertion depth of the
sensor in the pipe and accurate measurement of
the pipe dimensions. The installation tool
(3-2550.355) is recommended for best results.
2.1 Sensor location
Select a location for the sensor where the flow
profile is fully developed and not affected by any
disturbances. A minimum of 10 pipe diameters of
straight run upstream and 5 diameters downstream
is recommended. Some situations may require 20
pipe diameters or more upstream to insure a fully
developed turbulent flow profile.
The 2550 is sensitive to air bubbles at the
electrodes. If there is any question that the pipe is
absolutely full, mount the sensor at a 45 to 135
°
angle. The magmeter requires a clearance of
approximately 16 in./400 mm for removal.
2.2 Preparing the pipe
1. Cut a 2.125 in.
±
1/16 in. (54 mm
±
1.6 mm)
opening in the pipe. Carefully debur the hole for
best results.
2. Install a standard 2 in. saddle or weld-on fitting
on the pipe. Welded fittings should be installed
by qualified personnel. The threads must be
perpendicular to the pipe within 1
°
for proper
performance.
2
10 x id 5 x id
15 x id 5 x id
Reducer
Flange
20 x id 5 x id
Inlet
Outlet
Inlet
Outlet
90° elbow
Inlet
Outlet