Endress+Hauser Prosonic T FMU30 - Installation Conditions and Range

Prosonic T Installation
Endress+Hauser 11
3.3 Installation conditions
3.3.1 Installation conditions for level measurements
L00-FMU30xxx-17-00-00-xx-005
• Do not install the sensor in the middle of the tank (3). We recommend leaving a distance between
the sensor and the tank wall (1) measuring 1/6 of the tank diameter.
• Protect the device against direct sun or rain (2), e.g. with a weather protection cover, see the
technical information TI00440F, chapter "Accessories".
• Avoid measurements through the filling curtain (4).
• For solid application where bulk solid cones appear, align the sensor membrane perpendicular to
the surface.
• Make sure that equipment (5) such as limit switches, temperature sensors, etc. are not located
within the emitting angle . In particular, symmetrical equipment (6) such as heating coils, baffles
etc. can influence measurement.
• Never install two ultrasonic measuring devices in a tank, as the two signals may affect each other.
• To estimate the detection range, use the 3 dB emitting angle .
1
234
5
6
1/6D
D
r
a
L
Sensor  L
max
r
max
1½" 11° 5 m (16 ft) 0.48 m (1.6 ft)
2" 11° 8 m (26 ft) 0.77 m (2.5 ft)