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Ultrasonic Distance & Proximity Sensors

Ultrasonic sensors use time of flight of sound in air to sense objects and to measure distance. Compared to other measuring principles ultrasound is very robust. It works well in dirty environments and sound waves are reflected by almost all surfaces, rendering this technique insensitive to material, colour and surface structure of the detection target.
Click here for a video demonstration of how these sensors perform in dirty. dusty conditions and with transparent materials

High performance ultrasonic distance & proximity sensor

The UPK series is characterised by its high acoustic power combined with small sensor size. This is achieved with
new SONARANGE® transducers working at high electrical voltages, allowing small, moving and poorly reflecting
objects to be safely detected. In addition the sensors can operate in highly contaminated environments. With a
length of < 40mm these compact sensors have an extremely high measuring range.

  • The highest performance series in the range
  • Highest detection sensitivity
  • Low profile, small size
  • Measuring distances from 80mm to 5m
  • Versions with analogue and/or binary outputs
  • Versions with synchronisation input to prevent interference between multiple sensors
  • Measurement independent of material, surface, colour & size of target
  • Works under conditions of dust, dirt, light & fog
  • Detects transparent and bright objects
  • Watertight to IP67, oil resistant, robust
  • M8 connector for screw or snap-on
  • Versions with shielded integrated cable
  • Customised versions available
  • Swiss made by SNT Sensor Sensortechnik
Compact ultrasonic distance & proximity sensor

The compact UPR-A ultrasonic sensors are characterised by a wide measurement range of 1.5m. These sensors
are configurable via a "teach in" function. Three different detection beam sizes can be set by the user allowing the
sensor to be adapted to the application

  • Measuring distances from 120mm to 1500mm
  • Analogue or binary output
  • Configurable beam size
  • "Teach-in" mode
  • Can be configured as scanner or retroreflective barrier
  • Watertight, IP67, ATEX22, oil resistant, robust
  • Measurement not affected by material, surface, colour and size of target
  • Works under conditions of dust, dirt, light & fog
  • Detects transparent and bright objects
  • Swiss made by SNT Sensor Sensortechnik
Compact & economical ultrasonic proximity sensor

The compact UPR-B ultrasonic sensors have a wide measurement range adjustable between 100mm to 1000mm. These sensors are configurable via a "teach in" function or by potentiometer. The UPR-B sensor features sealing
that renders them impervious to many environmental influences. They are particularly resistant to oil, unlike many
other ultrasonic sensors.

  • Compact and economical design with robust metal housing
  • Measuring distances from 100mm to 1000mm
  • Binary output with adjustable window. PNP or NPN with NO or NC operation
  • Axial and radial sensing models
  • "Teach-in" mode or potentiometer adjustment
  • Watertight, IP67, ATEX22, oil resistant, robust
  • Measurement not affected by material, surface, colour and size of target
  • Works under conditions of dust, dirt, light & fog
  • Detects transparent and bright objects
  • Swiss made by SNT Sensor Sensortechnik
UPR-A CP
Datasheet
SNT UPR-A CP ultrasonic sensor

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Compact ultrasonic distance & proximity sensor for use with aggressive chemicals

Based on the UPR-A ultrasonic sensor, the UPR CP sensors are specially designed for use in chemically
harsh environments. The chemical resistance is based on the use of PVDF & PTFE materials on exposed areas.

  • Exposed front part made from PVDF
  • Ultrasonic transducer protected by PTFE membrane
  • Resistant against most chemicals such as acids & alkalis
  • For level measurement and control of aggressive media
  • Swiss made by SNT Sensor Sensortechnik
Ultrasonic proximity sensor

  • Measuring distance up to 500mm
  • Small size in popular "R" shape
  • Version with synchronisation input to prevent interference between multiple sensors
  • Watertight, IP67, ATEX22, oil resistant, robust
  • Measurement not affected by material, surface, colour and size of target
  • Works under conditions of dust, dirt, light & fog
  • Detects transparent and bright objects
  • Swiss made by SNT Sensor Sensortechnik
Ultrasonic proximity sensor in M30 package

  • Measuring distance up to 200mm
  • Short M30 housing with M12 connector
  • No blind range for most materials
  • Watertight, IP67, oil resistant, robust
  • Measurement not affected by material, surface, colour and size of target
  • Works under conditions of dust, dirt, light & fog
  • Detects transparent and bright objects
  • Swiss made by SNT Sensor Sensortechnik
Ultrasonic distance & proximity sensor

  • Measuring range up to 200mm
  • Very small blind range
  • Narrow detection beam
  • Small size M12 x 1
  • "Teach-in" mode
  • Binary or analogue outputs
  • Measurement not affected by material, surface, colour and size of target
  • Works under conditions of dust, dirt, light & fog
  • Detects transparent and bright objects
  • Swiss made by SNT Sensor Sensortechnik
UPS FB
Datasheet
SNT UPS-FB ultrasonic sensor

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Miniature ultrasonic distance & proximity sensor with narrow focus detection beam

This adaptation of the UPS ultrasonic sensor has a very narrow focus beam suitable for measurements where the detection region is very small

  • Very narrow detection beam
  • Excellent for level measurement in small cavities
  • No blind range
  • "Teach-in" mode
  • Binary or analogue outputs
  • Swiss made by SNT Sensor Sensortechnik
UPS CP
Datasheet
SNT UPS-CP ultrasonic sensor

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Miniature ultrasonic distance & proximity sensor for use with aggresive chemicals

Based on the UPS ultrasonic sensor, the UPS CP sensors are specially designed for use in chemically
harsh environments. The chemical resistance is based on the use of PVDF & PTFE materials on exposed areas.

  • Chemically resistant version (PVDF)
  • Diaphragm PTFE coated
  • Exposed front part resistant to most chemicals
  • Measuring range up to 150mm
  • "Teach-in" mode
  • Binary or analogue outputs
  • Swiss made by SNT Sensor Sensortechnik
Ultrasonic barrier

  • Large detection range, up to 1500mm
  • Small size in popular "R" shape
  • Microprocessor controlled
  • No blind range
  • Very high switching frequency (200Hz)
  • Suitable for detection of fast objects separated by small distances
  • Can detect surfaces not at right angles to the beam
  • Adjustable transmitter power
  • Adjustable switching delay
  • Works under conditions of dust, dirt, light & fog
  • Detects transparent and bright objects
  • Watertight, IP67, ATEX22, oil resistant, robust
  • Customised versions available
  • Swiss made by SNT Sensor Sensortechnik
UPF-A
Datasheet
SNT UPF ultrasonic sensor

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Ultrasonic sensors for web guide and edge control

The UPF-A are ultrasonic through beam sensors with separate transmitters and receivers. They are suited to edge
detection on web guiding systems. In contrast to conventional barriers they give an analogue signal proportional to
the degree of covering of the ultrasonic receiver rather than an on/off output. A fully covered receiver gives an
output of 0V, a fully uncovered receiver gives an output of 10V (or vice versa, the signal can be inverted).

  • Ultrasonic fork barrier with analogue output 0-10V
  • Analogue signal is proportional to lateral covering of ultrasonic receiver
  • Ideal for edge control & web guidance systems
  • Works with transparent materials
  • Works in contaminated air
  • High accuracy & temperature stability
  • Large measurement range
  • Very small plane change influence
  • High sampling rate
  • "Teach-in" mode
  • Swiss made by SNT Sensor Sensortechnik
UPF-B
Datasheet
SNT UPF-B ultrasonic sensor

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Ultrasonic fork barrier with binary output

Ultrasonic fork barriers have a transmitter and a receiver, each mounted on one side of the fork housing. The
transmitter beam is focused on the receiver. When the beam is interrupted by the object to be detected the receiver
output changes state. The output signal can be set to NO or NC.

  • An alternative to optical fork barriers
  • Simple and quick mounting
  • Detects parts in dirty environments
  • Edge detection
  • Can detect transparent parts
  • High switching speeds
  • Watertight, IP67, robust, oil resistant
  • Swiss made by SNT Sensor Sensortechnik
UPF-L Label Series
Datasheet
SNT UPF-L ultrasonic label detection sensor

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Ultrasonic fork sensor for label sensing

The UPF-L ultrasonic label sensor detects very thin and transparent film labels yet also offers enough space
for thicker, folded labels. A clear operating menu with integrated display enables intuitive adjustment of the
sensor functions without the aid of an operating manual.
The ultrasonic technology with SONARANGE transducers is superior to optical and capacitive sensors when
sensing transparent label material.
In addition to label detection, the UPF-L is suitable for edge detection or the detection of small holes or perforations.

  • Graphic display
  • Different teach options
  • Remote teach with key-lock function
  • Two switching outputs independently adjustable
  • Detection of metallised-, transparent- and paper labels
  • Large fork width and fork depth
  • Robust metal casing
  • Swiss made by SNT Sensor Sensortechnik