Sonicont USP4

Ultrasonic sensor for non-contact level measurement in liquids and bulk solids

  • Easy to operate via Bluetooth and App
  • Slender design
  • Combinable with measuring tube, this avoids adjustment



The Sonicont USP4 is an ultrasonic sensor for non-contact level measurement and monitoring in liquids and bulk solids. The sensor is designed as a suspension version with a cable outlet or as a screw-in sensor with a cable or plug connection. Thanks to its slim design, the sensor can be inserted through small container bores or installed in thin monitoring wells.

The Sonicont USP4 can optionally be combined with measuring tubes made of PE. This gives the ultrasonic signal a defined measuring path, which means that there are no influences that would affect the ultrasonic signal, for example, from oxidized and uneven level pipes or container walls.

The electronics are designed as a 4… 20mA 2-wire signal. In order to ensure safe operation, especially outdoors, the Sonicont USP4 has integrated surge protection.

Due to its high accuracy, the compact sensor can be used for a wide variety of applications in the field of groundwater and surface water measurements, tank monitoring, wastewater and distance measurements. Using a free app, the Sonicont USP4 can be adapted to the respective operating conditions via Bluetooth® 5.0 LE.

Schuettgueter_Fluessigkeiten beruehrungslose_Messung Bauform_schlank Bluetooth Ueberspannungsschutz Temperaturmessung_integriert
Input Distance
Measuring range 0m…2m (with variant measuring range 02)
0m…5m (with variant measuring range 05)
0m…8m (with variant measuring range 08)
Blocking distance BD ≤ 0,10m (typ. 0,06m)
≤ 0,15m (typ. 0,10m)
≤ 0,30m (typ. 0,19m)
Pulse rate tp
(meas. cycle time)
≤ 10Hz / ≥ 100ms
≤ 4Hz / ≥ 250ms
≤ 2Hz / ≥ 500ms
Characteristic deviation ≤ ±2mm or ±0,2%FSO
Temperature deviation Tk Zero (mean value) ≤ ±0,006% FSO/K
Output current 4…20mA Bluetooth® 5.0 LE
Analogue output 4…20mA 3,8mA…20,5mA
≥ 3,6mA
≤ 22mA
dI ≤ 1µA
Time behavior T90 ≤ Pulsrate tp (td = 0s)
ton ≤ 3s (td = 0s)
Interface Bluetooth 5.0 LE (2Mbit/s)
Auxiliary power
Supply voltage Us
(polarity protected)
11 V…35 V DC
Overvoltage protection
Coarse protection EL-K/H/0: 75V / 10kA – wave 8/20μs / +L/-L to cable shield
EL-S: 150V / 10kA – wave 8/20μs / +L to -L
Fine protection 36V
all lines to -L
Environmental conditions
Environmental temperature -20°C…+70°C
Protection class EL-K/H/0: IP68 [≤3m/≤0,3bar] (EN/IEC 60529)
EL-S: IP65/IP67 (EN/IEC 60529)
(Process wetted)

Documentation german

User manual
Technical information

Documentation english

User manual
Technical information

Product configurator