Siemens SITRANS FUP1010, Operating Instructions Manual, Page: 33 / 208

6. Never mount sensors under water, unless you order submersible units and you install them
in accordance with factory instructions.
7. Never mount sensors on the top or bottom of a horizontal pipe. The best placement on a
horizontal pipe is either the ten o’clock and two o’clock position for Reflect Mode, or one
sensor at nine o’clock and one sensor at three o’clock for Direct Mode. Mounting on a
vertical pipe is recommended only if flow is in the upward direction. When mounting on a
vertical pipe flowing in a downward direction make sure there is sufficient back pressure in
the system to maintain a full pipe.
①
Dual Path, Reflect Mount
②
Dual Path, Direct Mount
Figure 5-6 Sensor Alignment (Horizontal Plane)
Preparing the Pipe
1. Pick a mounting location with the longest straight run. You must have easy access to at
least one side of your pipe. The pipe at the mounting location must remain full, even at zero
flow.
2. Decide on your mounting mode (Direct or Reflect). Always use Reflect Mode whenever
possible. You may only need to use Direct Mode if your pipe is plastic.
Connecting
5.2 Sensor Wiring
FUP1010 IP67 Portable Flowmeter
Operating Instructions, 02/2010, A5E02951522A Revision 01 31