Sensors > Inductive sensors
Inductive sensors

Robust sensors for object detection in metalworking

Inductive sensors are used to manage, position, and control processes in automation technology. The robust sensors detect objects in metalworking.

There are a number of options available to suit most applications: from standard to increased sensing distance, temperature- and high-pressure-resistant.

Benefits

  • Suitable for a variety of applications
  • Contact-free and therefore wear-free
  • Resistant to dirt
  • Short-circuit resistant
  • In configurations from 3 mm Ø to 80 × 80 mm square dimensions

Product families

Sensors for potentially explosive areas

Reliably manage, position and control automated processes in Ex zones

Sensors for potentially explosive areas

Inductive sensors are used around the world to manage, position, and control processes in automation technology. Balluff has a wide range of inductive sensors that are pressure-resistant to 500 bar for running end position checks on hydraulic cylinders and monitoring valve positions. They are media-resistant and available in a wide range of housing and thread sizes.

One particular range of these sensors can be used in areas where an explosive atmosphere rarely occurs. Combined with a Zone 2 isolating amplifier, the sensors can also be used in potentially explosive systems or spaces in Zone 1.

The features

  • Applicable for zones 2G/1D and 3G/3D
  • Pressure rated to 500 bar
  • High-temperature-resistant up to 120 °C
  • Can be combined with NAMUR boosters
  • Contact-free and therefore wear-free
  • Resistant to dirt
  • Short-circuit protected
  • Media-resistant
Balluff offers contactless measuring displacement measuring systems and sensors in different versions.
Distance sensors

Reliable measurement of positions, clearances and differentiation of materials

Distance sensors

Our BAW inductive distance sensors measure various positions and distances and can also differentiate between various material variants. They work contactlessly and are wear-free and, therefore, distinguish themselves by a long service life.

Their teach function has an adjustable linear range. This allows a quick start-up at first installation and provides for short down times during sensor exchange.

The multiplicity of available configurations allows the inductive distance sensors to be easily integrated into any applications. Included among the important fields of application are the monitoring of movements in joining, pressing or clamping equipment used for machine construction or the detection of imbalances and expansions of axles.

The clearance sensors supply an absolute analog voltage, current or IO-Link signal.

The features

  • Compact, solid and reliable
  • Contact-free and therefore wear-free
  • Absolute measuring principle
  • Measurement range from 0.2 to 50 mm, also teachable
  • Short response time, high reproducibility and linearity
  • Broad temperature range, minimal temperature drift
  • Simple application via analog interfaces and IO-Link
Linear position sensors

Can be perfectly integrated even when there is little space

Linear position sensors

The BIP inductive positioning system is also impressive in constricted installation conditions: perfectly integratable, it measures the position of metallic objects with maximum precision in a contact-free, and, therefore, wear-free manner. Thus it securely detects linear displacement paths for a simple target. A simple component of the machine such as a rotary disk can also function as a target. Measured values are relayed via IO-Link or as analog, depending upon the design.

The main field of application for the sensor is the monitoring of drive spindles and clamping devices. Here the inductive positioning system provides for error-free clamping operations. The positioning system can further be used in mechanical engineering for many other applications with linear motion, such as determining punching depth, gripping positions, roller placements, valve positions, etc. High repeatability thus ensures optimal process quality.

The features

  • Measurement ranges adjustable from 0…133 mm
  • No mechanical adjustment is necessary
  • Contact-free and therefore wear-free
  • High repeat accuracy and precise positioning
Inductive Factor 1 sensors

Sense all ferrous and non-ferrous metals at the same sensing distance

Factor 1 sensors

Balluff's inductive Factor 1 sensors can be used wherever dissimilar metals must be identified uniformly and with high precision. Our all-rounder for reliably recognizing all metals without a reduction factor at a sensing distance: ferrous and non-ferrous metals, steel, brass, aluminum etc. Additionally, they are magnetic-field-resistant and can therefore be used in areas with a strong electromagnetic field – for example in welding plants. For these, we also offer variations with PTFE coatings, the PTFE coating helps protect the sensor from weld slag and weld flash generated during the welding process.

The features

  • High sensing distance without reduction factor for all metals
  • Magnetic-field-resistant
  • Installation in different metals possible
  • High-precision and flexible use
  • A range of different models and sizes
  • Perfectly suited for applications with variable detection objects (steel, AL, CuZn and Cu)
Factor 1 sensors identify objects, such as those made of steel, aluminum or brass, with near-identical switching distances (without reduction factor).
Pressure-rated inductive sensors

Easy to integrate and reliable to 500 bar

Pressure-rated inductive sensors

Our pressure-rated inductive sensors withstand a pressure of up to 500 bar. They are, therefore, perfectly suited for position monitoring of your hydraulics, for example: end position verification of hydraulic cylinders or monitoring valve position. This durability is made possible by media-resistant housing materials and a special sealing process. For your individual applications, we offer different configurations as well as a comprehensive program with different housing diameters and thread sizes.

The features

  • Pressure rated to 500 bar
  • High-temperature-resistant up to 120 °C
  • Appropriate for use in explosion-protected areas
  • Overall dimensions from M5 to M18
  • Short and long configurations
  • With and without positive stop
In the wide range of hydraulic applications, high pressure proximity switches are exposed to many hostile environments.
Hygienic sensors

Long service life even under difficult environmental conditions

Hygienic sensors

Our hygienic sensors are extremely resistant to abrasives and aggressive media, their labeling is resistant to abrasion and chemicals. The luminous displays are protected against destruction and the housing construction is optimized for safe cleaning. For use in extremely aggressive environments, variations completely in PTFE are available.

The features

  • Stainless steel housings available, such as 1.4404, 1.4571
  • High chemical resistance
  • High degree of protection IP67 to IP69K
  • Increased temperature range available
  • Ecolab, FDA certifications available
  • Safe cleaning (CIP)
  • Different models and sizes
Magnetic-field-resistant inductive sensors

Magnetic-field-resistant and weld field immune – for flexible use in harsh conditions

Magnetic-field-resistant inductive sensors

Our magnetic-field-proof inductive sensors are ideal for use in areas with strong magnetic fields such as in welding and induction hardening installations. They are resistant to magnetic fields arising from electric welding currents to 25 kA. With their additional ceramic coating, they are resistant to metal spatters, slag and combustion residues. This also enables the highest precision work in every area of use. The high robustness of our sensors can reduce your maintenance costs – and thus decrease the down time in your facilities.

The features

  • Extremely robust
  • Magnetic-field-resistant
  • Weld-splatter-resistant
  • Resistant to abrasive media and cleaning agents
  • Different models and sizes
Magnetic-field-resistant inductive sensors
Magnetic-field-resistant inductive sensors are insensitive to magnetic fields arising from electric welding currents to 25 kA (at a distance of approx. 5 cm from current-carrying conductors).
Inductive sensors with stainless steel housing and sensor front

The most robust devices for extreme applications

Inductive sensors with stainless steel housing and sensor front

Balluff's especially resistant stainless steel inductive sensors are custom developed for use in very harsh environments. Housing and sensor front manufactured from stainless steel. The robust active surface is resistant to impacts as well as mechanical stresses and abrasive media. For use in welding applications, we offer additional varieties with PTFE and ceramic coating against welding spatter. The extreme resilience of our sensors can reduce your maintenance costs – and thus increase the availability of your facilities.

The features

  • Extremely robust
  • High switching distance
  • Factor 1 sensors and selective sensors (ferrous/non-ferrous)
  • Resistant to abrasive media and cleaning agents
  • Different models and sizes
Stainless steel faced inductive sensors
Stainless steel faced inductive sensors with selective response ignore ferrous or non-ferrous metals, depending on the version.
Temperature-resistant sensors

For extreme applications up to 160 °C

Temperature-resistant sensors

Our temperature-resistant sensors are designed for temperatures to 160 °C. The housing as well as the cable construction are optimized for higher temperatures,with the electronics completely integrated. Some variations are available as high pressure sensors which makes use even more flexible, therefore you reduce maintenance costs, increase your process quality and optimize your system availability.

The features

  • No sensing distance drift under temperature
  • Temperature ranges up to 160 °C available
  • High degree of protection to IP68
  • Stainless steel housing 1.4571
  • Available in different models and sizes
High temperature-resistant sensors
The ultra-high temperature-resistant inductive sensors can be used in temperature ranges up to +160 °C. These sensors are ideally suited to harsh environments in the steel industry, in plastic injection molding machines and in forging and foundry processes.
Inductive Global sensors for object detection in metal areas

Globally proven solutions for controlling, positioning and monitoring

Our inductive Global sensors for object detection in metal areas are robust and reliable. With a wide range of over 500 series, we offer the right inductive sensor for every application.

The technology, which is in use worldwide, has an optimum price/performance ratio and can also be delivered in large quantities in a short amount of time.

The features

  • Cylindrical sensors in Ø 6,5 mm, M8, M12, M18, M30 and cuboid design 40 × 40 mm
  • Shielded and unshielded versions
  • Flush ranges up to 15 mm
  • Non-flush ranges up to 30 mm
  • Connector or cable connection
Inductive Global sensors
Inductive mini-sensors

Powerful and compact for position sensing in rough environments

Inductive mini-sensors

Inductive mini-sensors guarantee position sensing in rough environments and in the tightest of spaces. This is because their electronics are fully integrated, making external amplifiers unnecessary.

Their low weight of 0.7 g permits applications with extreme accelerations. Pick-and-Place is easy to achieve as a result.

Inductive mini-sensors from Balluff are easy to install and can also be fully integrated into slim assemblies. As a result, using them for position sensing is possible where there had never been space for a sensor before. And assemblies can be further reduced in size.

Miniaturization and slender designs

Balluff provides mini-sensors with particularly small diameters: 3 mm, 4 mm and 5 mm. With a housing length of only 6 mm, our compact mini-sensors are the shortest inductive sensors on the market.

The features

  • Position sensing in rough environments, in the tightest of spaces
  • The most compact mini-sensors on the market: can be fully integrated
  • Low weight for extreme accelerations
  • Unsurpassedly slender and unbeatably short
  • Optimal price/performance ratio
Inductive mini-sensors applications
Inductive mini-sensors permit extremely fast accelerations in Pick-and-Place applications.