Water or Wastewater Level control

Detection of filling levels from just a few millimetres up to 6 m. Ultrasonic sensors with one or two switched outputs for minimum/maximum control, or with 0-10 V and 4-20 mA analogue output plus sensors for INTERBUS are available.

Quality control

directly on the conveyor belt. A ust-25/CD/S/HV/M18 with pnp switched output detects bottles that are too tall or too short, or have fallen over.

Ultrasonic double-sheet detection

identifies two or more sheets of material on top of each other. The SHdbk-4 product range is ideal for use where paper is in use, such as in sheet-fed printing presses, printers, photocopiers or collating machines. And for thicker materials such as plastic sheets or coarse corrugated card, use the SHdbk-5

Detecting people

If the task is to detect the presence of persons, you are recommended to choose a sensor with an operating range well in excess of the required scanning distance. The greater the operating range of a sensor, the lower is its ultrasonic frequency. And the lower the ultrasonic frequency, the easier it is to detect absorbent clothing materials such as wool or corduroy.


When scanning panes of glass or other smooth, flat surfaces, care should be taken to ensure that the ultrasonic sensor scans perpendicular to the surface.

Wire breakage detection

during the winding/unwinding of wires. A 31/D/HV/M30 with a 350 mm operating range or a 101/D/HV/M30 with range of 1300 mm can be used to suit the size of the drum.
Ultrasonic sensors with analogue output are available for detecting the position of the wire.

Tear detection

Film and foil in packaging machines is very easily monitored with a sensor from the range. If the material does not lie flat, it is advisable to operate the sensor as a two-way or reflective barrier because this operating mode also works reliably when the sonic beam is deflected away by the waves in the material.

Loop control

In this case an ultrasonic sensor with analogue output scans from above into the loop and adjusts the material feed depending on the size of the loop.
If a loop of material tends to swing sideways, the sound waves are very easily deflected away when scanning from above. In such cases it is recommended to scan the loop from below, as shown in the diagram.

Height and width measurements

The wms-4/4I controller with four analogue outputs enables the simultaneous operation of up to four ultrasonic sensors with different detection ranges for the three-dimensional scanning of any size of box.

Presence detection

Sensors with a switched output, can be employed depending on the size of the box or container. The 25/D/HV/M30,
31/D/HV/M30 and 101/D/HV/M30 are available for scanning in small boxes. With larger containers you are recommended to use a 301/D/HV/M30 or a 601/D/HV/M30. If the box or container is to be scanned by several sensors, the use of a sensor from the wms range in conjunction with a separate wms controller is recommended.

Level control in 6 bar overpressure

is possible with the hps+ series sensors. In addition, the sensors are chemically resistant and available as a version with two pnp switching outputs or analogue and switching output.

Ultrasonic barrier

It is easy to set up a two-way or reflective barrier using an ultrasonic sensor operating in window mode. To do this, a permanent reflector is positioned behind the objects to be scanned. When an object obscures the reflector, a switching signal is generated.

Sonic reflector

In confined installations, or to protect the sensor membrane against splashes of water or deposits of material, the sonic beam can be turned through 90° by using a sonic reflector. Any suitable piece of metal or plastic sheet can be used as a sonic reflector. Sonic reflectors are available as an accessory for sensors with a maximum range of up to 2 m.

Crate filling control

The mic+ series ultrasonic sensors and the pico+ series ultrasonic sensors were specially developed for applications such as checking whether crates are filled or empty, or scanning empty plastic bottles on a conveyor belt. The synchronisation, which is integrated in both sensor families, simplifies the design of a sensor line.

Checking diameters

The diameter of a roll or coil of material can be detected by an ultrasonic sensor with analogue output and the drive adjusted or brake applied accordingly. For small diameters this is a typical application for a 31/IU/HV/M30, and for diameters up to 2.5 m a 101/IU/HV/M30

Stacking height control

Whether wooden boards, panes of glass, sheets of paper or coloured plastic panels, ultrasonic sensors are ideal for detecting the height of a stack of material with great accuracy.

Installation for a foil extruder

The controller with four 4-20 mA analogue outputs is ideal for controlling the diameter on a foil extruder.

Crate filling control

The column sensors were specially developed for applications such as checking whether crates are filled or empty, or scanning empty plastic bottles on a conveyor belt. A sensor can distinguish between bottles that are too tall or too short, or have fallen over.

Robotic sensing

Owing to their compact dimensions the pico+ series ultrasonic sensors with an M18 threaded sleeve or the zws series in square housings are ideal for positioning robot arms.