Modern displacement measurements in difficult industrial conditions
Modern technological lines require precise, durable and failure-free measurement systems. In applications where reliability in extreme conditions is important - such as high temperatures, the presence of liquid metals or strong electromagnetic fields - eddy current sensors Micro-Epsilon, available in the WObit offer, are perfect.
These devices enable non-contact measurement of displacements, vibrations and deflections of metal elements with micrometric accuracy, thanks to which they are widely used in the metallurgy, steel and automotive industries. As the official distributor of Micro-Epsilon in Poland,WObitprovides comprehensive technical support and delivery of these solutions.
Principle of operation of eddy current sensors
Eddy current sensors operate based on the phenomenon of electromagnetic induction. The measuring coil generates an alternating magnetic field which, upon contact with a conductive material, generateseddy currentsin it. Their intensity depends on the distance between the sensor and the metal surface. By analyzing the change in the return signal, the system precisely determines the distance or displacement of the tested element.
The most important advantages of this technology are:
Non-contact measurement resistant to mechanical wear,
Resistance to dust, oil, water and pollution,
High temperature stability,
Ability to work near strong electromagnetic fields.
Application example: stabilization of tapes in hot-dip galvanizing lines
In hot-dip galvanizing lines, steel strips move at high speed and are coated with liquid zinc or its alloys. This process creates vibrations that can reduce coating quality and line efficiency.
To prevent this, the industry leader - EMG - uses electromagnetic stabilization systems with10 to 16 EU40 inductive sensors fromMicro-Epsilon installed. During operation, these sensors monitor the belt vibrationscontactlessly, converting the deflections into precise distance values. This data goes to the electromagnet control system, which stabilizes the belt movement in real time, minimizing vibration and increasing coating quality.
Durable construction for operation in extreme conditions
EU40 sensors and a dedicated eddyNCDT 3020 controller (DT3029/EMG version) have been developed specifically for operation in harsh industrial conditions.
The most important features of this configuration are:
Measuring range up to 40 mm,
Temperature resistance up to 105°C,
Protection class IP67 ensuring tightness and protection against chemicals,
Stable measurements even near strong electromagnets.
The compact controller can be integrated directly into the stabilization unit, which minimizes signal distance and improves measurement accuracy. WObit offers these systems ready for installation in Polish steelworks and metallurgical plants.
Precise and stable measurement results
The combination of a short sensor cable (1 m) and temperature stabilization guaranteehigh accuracy and repeatability of results. The analog signal is then sent to the control unit at a distance of up to 50m, which allows for flexible integration in complex industrial lines.
Thanks to this solution, the EMG system with Micro-Epsilon sensors ensures not only vibration reduction, but also continuous supervision of the coating process, resulting in better quality and lower material losses.
Summary
Micro-Epsilon eddy current sensors are a solution that combines durability, precision and resistance to extreme conditions. In applications such as stabilization of tapes in hot-dip galvanizing lines, their use guarantees maximum process stability and repeatable production quality.
Please contact us for detailed technical information and an offer.
