Prosonic M
16 Endress+Hauser
Installation variants FMU43
L00-FMU43xxxx-17-00-00-en-001
Installation conditions for
level measurements
L00-FMU4xxxx-17-00-00-de-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.
• Use a protective cover, in order to protect the device from direct sun or rain (2) → ä 39, "Weather
protection cover".
• Avoid measurements through the filling curtain (4).
• Make sure that equipment (5) such as limit switches, temperature sensors, etc. are not located within the
emitting angle α. In particular, symmetrical equipment (6) such as heating coils, baffles etc. can influence
measurement.
• Align the sensor so that it is vertical to the product surface (7).
• 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 α.
ENDRESS+HAUSER
Prosonic M
-
.
Zone 20
Installation with
mounting bracket
Installation with
universal slip-on flange (option)
slip-on flange
sensor
nozzle
e.g.Zone 20
1
234
5
6
1/6D
7
D
r
a
L
Sensor α L
max
r
max
FMU40 11° 5 (16) 0,48 (1.6)
FMU41 11° 8 (26) 0,77 (2.5)
FMU42 9° 10 (33) 0,79 (2.6)
FMU43 6° 15 (49) 0,79 (2.6)
FMU44 11 ° 20 (66) 1,93 (6.3)
m (ft)