Inductive distance measuring sensors AlphaProx

Highly precise, efficient and robust sensors for process automation

Inductive sensors of the Baumer AlphaProx family are the perfect solution for reliable non-contact measurement of changes in the position of metal objects. Thanks to their high temperature stability in connection with large measuring distances, the high degree of consistency and their robustness, the sensors are ideally suited for measuring positions and angles, controlling and monitoring belt tension, controlling sag and measuring low-frequency vibrations.

Product Description



Sensors with linearized characteristic

• Constant sensitivity over entire measuring range

• Individually teachable measuring ranges for fast and easy installation

• Extremely low deviation from sensor to sensor

• Programmable digital output

Miniature sensors and short designs

• Completely integrated processing electronics

• Easy installation in tight spaces

• Different rectangular (5×5, 8×4.7mm) and cylindrical designs (ø4, ø6.5, M8)

• Short cylindrical designs with lengths up to 22mm

High sensitivity sensors

• Large signal changes  at smallest position changes

• Individual teachable measuring range for fast and easy

• Cost-effective alternative to strain gauges  for of deflection and load measurement

Large measuring distances with small designs

• Flush designs for cramped spaces

• Measuring distances up to 6 mm

• Easy and safe installation

High-precision sensors

• Very high resolution in the nanometer range

• High temperature stability

Factor 1 with aluminum

• Large measuring ranges  with aluminum (no reduction factor)

• Constant sensitivity over the entire measuring range with aluminum objects

Hygienic and washdown-Design

• FDA-compliant, Ecolab-tested

• IP 69K

• Long-term seal thanks to proTect+ impermeability concept

Standard sensors

• Dimensions from 4 to 30 mm for every requirement

• Absolute distance measurement up to 16 mm

• Completely integrated processing electronics

Robust sensors

• Robust stainless steel housing

• IP 69K

• Extremely robust and durable thanks to Baumer proTect+

• High signal quality in an extended temperature range

Sensors for the ex-area (ATEX)

• ATEX certified for explosive dusty atmospheres (2D zone 22)

• Highest repeatability

• Compact design

Customized Sensors for low TCO

• Individual output curves

• Low-power variants

• Sensors for safety applications

• Special designs


• Machine tool building

• Installation/handling

• Semiconductor manufacture

• Packaging machines

• Measuring/testing technology

• Textile machines

• Graphic machines

• Plastic machines

• Commercial vehicles

Tape tension control and monitoring

  • High control quality at high frequencies possible
  • The sensor performs two functions: distance measurement (analog) and end position shut-off (digital)
  • Through teach-in the sensor measuring range can optimally be adapted to different roller diameters

Vibration measurements on shafts and bearings

  • Bearing play or true running measurements
  • Measurement of distances to 1 μm
  • Mounting is possible even in extremely limited spaces (amplifier is integrated in the sensor)
  • Very rapid movements can be measured
  • Miniature sensors also available in a connector version

Absolute distance and angular measurement

  • High reliability thanks to contact less measuring
  • Dirt-resistant measuring system
  • Measurement of linear and rotary movements possible
  • Compact sensor sizes allow mounting even in limited spaces

Product catalog – Inductive sensors


Inductive distance measuring sensors AlphaProx :

highly sensitive, well protected , easy to assemble