MESSOTRON - Leading manufacturer of displacement transducers, eddy current transducers, measuring amplifiers

Started in 1973, MESSOTRON is a company that has been successfully established in the market for almost 50 years and has an impressive customer base with over one million sensors installed.MESSOTRON develops and manufactures high quality sensors for industrial use based on different measuring principles, especially for dynamic distance and position measurement.MESSOTRON has a wide range of products. These include LVDT/LVIT displacement sensors, eddy current sensors, vibration sensors, magnetostrictive sensors, rotary encoders, as well as measurement and evaluation electronics.




Products I. Displacement sensors


1. Linear Capacitive Displacement Sensors
Linear inductive displacement transducers, also called LVDT displacement transducers (LVDT, Linear Variable Differential Transformer), etc., can be used to measure linear displacement and position. They are characterised by their high accuracy and rugged construction. The robust construction allows these transducers to withstand high accelerations and vibrations. A simplified description of the measuring principle: The ferromagnetic core moves in a coil consisting of a primary and a secondary winding. The primary winding is powered by an AC voltage with a frequency between 1 and 10 kHz. If the ferromagnetic core moves in the alternating magnetic field of the secondary coil, a secondary signal is generated. This is then converted into a standard output signal.


2、Pull-cord displacement transducer
A pull-cord displacement transducer, also known as a cable-controlled encoder or cable-controlled displacement transducer, uses a highly elastic, strain-free measuring pull-cord to convert linear motion into rotary motion. It measures the displacement and velocity of the object being measured. This is a contact measurement method. The measuring pull cord is wound on a pull cord reel. It is attached to a pre-stressed spring. This spring prevents the measuring rope from sagging and acts as a rope retrieval. By resisting the resistance of this spring, the measuring rope is moved by the measuring object.




Product 2. Eddy current sensors


MESSOTRON eddy current sensors can be used to solve a wide range of test and measurement tasks. The physical effect of the change in mass of the resonant circuit is used for the measurement.
Measuring principle:
A coil in the sensor head is supplied with a high frequency alternating current. This coil generates an electromagnetic field. This electromagnetic field is emitted from the front side of the sensor and induces a voltage in the measurement object located in the electromagnetic field. This induced voltage produces a current, also known as an eddy current. This current generates a magnetic field that counteracts the sensor's magnetic field. The superposition of the primary and secondary magnetic fields in the coil changes the coil impedance. The evaluation of this change results in a proportional output signal corresponding to the distance between the sensor surface and the measurement object.




Product III. Measuring amplifier


MESSOTRON's carrier frequency measuring amplifiers for the operation of inductive, resistive and capacitive measuring bridges are characterised by high noise immunity and temperature insensitivity.
Measurement amplifiers are also known as isolation amplifiers and measurement transmitters. A measurement amplifier is defined as a measuring device that converts an input variable directly into an output variable. The measuring amplifier is an important link in the measurement chain. The quality of the further signal processing depends essentially on the accuracy of the measuring amplifier. Different forms of measuring amplifiers are available with the following functions: signal amplification, excitation separation of the measurement signal, signal conversion, linearisation, filtering, normalisation of the input signal, real-time functions.


The available products include
Miniature measuring amplifiers
Plug-in cards and field enclosures
Amplifiers for mounting rails
Amplifiers with digital display