6
Prosonic T - FMU 130, 131, 230, 231, 232
Endress+Hauser
Function
An ultrasonic emitter (sensor) mounted above the product is electronically activated and
directs an ultrasonic pulse through the air towards the product. This pulse is reflected
back from the surface of the product. The echoes partially reflected are detected by the
same sensor, now acting as a receiver, and converted back into an electrical signal. The
time taken between transmission and reception of the pulse –
time-of-flight
– is directly
proportional to the distance between the sensor and the product surface.
Application and Measuring Ranges
The Prosonic T is a compact ultrasonic transmitter for continuous non-contact level
measurement in liquids and in coarse-grained or pelleted solids (grain size from 0.16
inches/4 mm). It has an integrated temperature sensor for time-of-flight compensation.
The Prosonic T series consists of three transmitters, which can be equipped with one of
several electronics modules, with graduated measuring ranges from 0.82 feet (0.25 m)
upwards.
FMU 130 FMU 131 FMU 230 FMU 231 FMU 232
1½² 2² 1½² 2²4²
ft (m) ft/m ft/m ft/m ft/m
0.8-13.1 (0.25-4) 1.3-23 (0.4-7) 0.8-13.1 (0.25-4) 1.3-23 (0.4-7) 2-49.2 (0.6-15)
0.8-6.5 (0.25-2) 1.3-11.5(0.4-3.5) 0.8-6.5 (0.25-2) 1.3-11.5 (0.4-3.5) 2-23 (0.6-7)
Without
FF A A—
Communication
HART B B C C —
INTENSOR A A B B —
PROFIBUS PA P P P P P
2-Wire, 4 to 20 mA Loop-Powered
Sensor / Process
connection
Measuring ranges
liquid:
solid:
FMU 230 FMU 231 FMU 232
1½² 2² 4²
ft/m ft/m ft/m
0.8 -16.4 (0.25-5) 1.3-26 (0.4-8) 2-49 (0.6-15)
0.8-6.5 (0.25-2) 1.3-11.5 (0.4-3.5) 2-23 (0.6-7)
Power Supply 180 90 18 180 90 18 180 90 18
to to to to to to to to to
250 127 36 250 127 36 250 127 36
V AC V AC V DC V AC V AC V DC V AC V AC V DC
Without
FJ D F JD FJD
Communication
HART G K E G K E G K E
PROFIBUS-PA
(2-wire) P P P P P P P P P
4-Wire, Including Power Supply
Sensor / Process
connection
Measuring ranges
liquid:
solid:
Electronics versions
FMU X3X
Electronics versions
FMU X3X
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