Siemens FUG1010 IP65 NEMA 4X, Operating Instructions Manual, Page: 59 / 271

Connecting
5.5 Sensor Installation
FUG1010 IP65 NEMA 4X
58
Operating Instructions, 01/2013, A5E02951519-AC
Mounting Strap Kits Pipe Diameter SAE Band Sizes (Qty.)
7ME396000SM00 50.8mm (2-inch) to 177.8mm (7-inch) #88 (2) #128 (2)
7ME396000SM10 50.8mm (2-inch) to 330.2mm (13-inch) #88 (2) #152 (2)
7ME396000SM20 330.2mm (13-inch) to 609.6mm (24-
inch)
#188 (2) #280 (2)
7ME396000SM30 609.6mm (24-inch) to 1219.2mm (48-
inch)
#152 (4) #312 (4)
Selecting a location for the sensors
1. Locate the sensors downstream from the center of the longest available straight run. A
location ten pipe diameters or greater downstream from the nearest bend will provide
adequate flow profile conditions.
2. Do not, if possible, install the sensors downstream from a throttling valve, a mixing tank,
the discharge of a positive displacement pump or any other equipment that could possibly
aerate the liquid. The best location will be as free as possible from flow disturbances,
vibration, sources of heat, noise, or radiated energy.
3. Avoid mounting the sensors on a section of pipe with any external scale. Remove all
scale, rust, loose paint, etc., from the location.
4. Do not mount the sensors on a surface aberration (pipe seam, etc.)
5. Do not mount sensors from different ultrasonic flow meters on the same pipe. Also, do
not run the sensor cables in common bundles with cables from other instrumentation.
You can run these cables through a common conduit ONLY if they originate at the same
flow meter.
6. Never mount sensors under water, unless you order submersible units and you install
them in accordance with factory instructions.
7. Avoid mounting 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.
R
①
Dual Path, Reflect Mount
②
Dual Path, Direct Mount
Figure 5-8 Sensor Alignment (Horizontal Plane)