Inductive (Eddy Current) Displacement Sensors

Learn Why Eddy-Current Sensors Are Now Replacing Inductive Sensors and Switches
Both eddy-current sensors as well as inductive switches and displacement sensors have been used for many years, each having their respective advantages when it comes to measuring position and displacement of objects in harsh environments. However, recent advances in eddy-current sensor design, integration and packaging, as well as overall cost reduction, have made these sensors a much more attractive option. This is especially true where high linearity, high-speed measurements and high resolution are critical requirements.

How to Reach Unrivaled Precision in Distance and Thickness Measurements with Confocal Sensors
Confocal chromatic measuring systems are increasingly used for fast distance and thickness measurements. Different sensor and controller models open versatile fields of application, e.g. in the semiconductor industry, glass industry, medical engineering and plastics production.  The unique optical confocalDT measurement system from Micro-Epsilon is based on the optical measuring principle, which specifically takes advantage of the so-called chromatic aberration of light. This refers to the different refraction of light in relation to its wavelengths. It measures distances by means of wavelength (spectrometry).

Non-contact temperature measurement of plastics
In plastics processing where thermal processes play a particularly important role, temperature is the crucial measurement parameter. Only precise temperature control ensures high, consistent product quality. Micro-Epsilon provides suitable measurement technology from a single source for almost any material or polymer.

How to Reach Unrivaled Precision in Distance and Thickness Measurements with Confocal Sensors
Sensors that measure the distance to an object have many application areas in the manufacturing industry and in quality control. The requirements for the measurement system differ substantially depending on the respective application. The distance to be measured, the speed, the accuracy required and the type and surface of the object are just a few of the numerous factors that determine the choice of sensor. Sensors based on an optical measurement principle have the advantage of being neither subject to effects of electromagnetic interference fields, nor to the effects of wear. In addition, optical measurement principles enable very high resolution, accuracy and repeatability using a true non-contact technology. 

Learn how capacitive sensors open up new perspectives
Conventional capacitive sensors are known from simple tasks e.g. as proximity sensor or for fill level measurements. With corresponding design and evaluation electronics, these sensors can also be used for high precision displacement and position measurements, achieving resolutions well below one nanometer. Capacitive displacement sensors are typically used in applications where fast displacement changes have to be acquired, where no forces can be exerted on the measurement object, where highly sensitive surfaces do not allow any contact, or where a long service life of the sensor is required. Capacitive displacement sensors from Micro-Epsilon have proven themselves in various industries and measurement tasks. 

Thickness Measurement with Laser Displacement Sensors
Laser displacement sensors are often used for measuring distance, movement and dimensions. If the measured values from two sensors are evaluated together, the thickness of an object can be determined from this. However, in order to achieve a precise statement of the target thickness from the combined signals of two sensors, there are a number of factors that need to be taken into account.

Monitoring the clamping position in machine tools
Monitoring the clamping position in machine tools is an extremely important and critical measurement task. In order to avoid incorrect machining and the high resulting costs, the position of the tool must be detected. Here, the induSENSOR LVP displ...

Measuring the bearing gap in wind turbines
In wind turbines, the bearing gap is very important because the better the sliding properties, the higher the plant effectiveness and service life. The bearing gap between the bearing surface and the drive shaft is reliably monitored using inductiv...

High precision gap monitoring in plant and machinery
With the eddyNCDT 3060, Micro-Epsilon has developed a powerful displacement measuring system based on the eddy current principle, which combines precision, speed and temperature stability in a unique way. These characteristics are complemented with...

Capacitive measuring system for industrial applications
The capaNCDT 61x0/IP capacitive displacement measuring system is suitable for inline quality assurance of production processes, and for control of plant and machinery. Protected to IP68, this measuring system is therefore suitable for many industri...

High-performance inductive displacement measuring system
The eddyNCDT 3060 inductive measurement system is based on eddy currents and enables fast, precise displacement measurements in industrial environments. More than 400 sensor models can be combined with the eddyNCDT 3060. Based on ease of use and sm...

Laser sensors for high precision distance measurements on metals and rough surfaces
The new optoNCDT 1750LL laser sensor is used in high precision distance measurements of metallic and structured surfaces. Their oval-shaped light spot makes it possible to compensate for physical interferences and to output stable measurement values...

New draw-wire sensor with 8 times longer service life
Compared to draw-wire sensors based on a conventional potentiometer, the new wireSENSOR WPS-MK88 U45R with a non-contact potentiometer achieves 8 times more working cycles, which extends the sensor’s service life to its maximum. This new technology...

Microscope lens for temperature monitoring of ultra-small targets
Thermal imager monitoring of ultra-small components is now possible using a microscope lens from Micro-Epsilon. This lens is available as an upgrade for the TIM 450 and TIM 640 high resolution thermal imaging cameras, enabling thermographic macro shoot...

The new generation of confocal chromatic measuring systems
Measuring tasks in the glass industry are often a huge challenge for sensors. The new confocal chromatic confocalDT 2421 / 2422 controllers ensure reliable, high speed and high precision distance and thickness measurements on reflecting and transpar...

High-Tech Solution for the Inspection of Mat and Shiny Surfaces
The reflectCONTROL Automotive and surfaceCONTROL Robotic inspection systems provide easy, fast and reliable quality inspection of surfaces. From a complete chassis to a single painted part, smallest defects can be reliably recognized inline, enabling 1...