Potenciómetros (medidores resistivos)

Traditional measurement system of the position through the resistance. A cursor moves by a conductive material varying the resistance depending on the terminal position. The old carbon has been replaced by conductive plastic less sensible to working conditions and more robust. We have available mechanic transducers for the application in any field. Basically, devices can be divided between the cursor models, where the cursor moves through a guide and the vástago ones, where a piston moves within a body. We have many shapes and accessories for coupling and mechanical movement. Fasteners, various electrical connections etc. Regarding the measuring ranges, they [...]

Inductive devices- LVDT

The basic principle of measurement is the movement of a magnet through the bobbin, changing the current circulating through it. It does not require an electrical contact between the mobile part and the bobbin, It is based on the electromagnetic coupling which makes it a very robust mechanically and prevents any influence of wear on the accuracy or measurement. Depending on the distribution, it can be LVDT (linear variable displacement transformer) or LVD by a half-bridge meter. This distinction only affects the connection and measurement system. We have many shapes and accessories for coupling and mechanical movement. Fasteners, various electrical [...]


Is based on the affectation that a magnetic field generated by a permanent magnet carries out on a cable. Mechanically, the magnet (ring shape) moves by the outside of a vástago incorporating a conductor it is altered by this field. The system is free of friction because the measurement is made without contact. In other cases, the magnet moves through a guide and it exists friction but the accuracy and reliability of the measurement is not altered by mechanical wear. The magnetorestictivos systems are especially applied in the following conditions. - Position measurement in hydraulic pistons. The bulb sensor is [...]

Transmisores de cable

For long distances and when it is not possible to work with a rigid axis , we can apply the technology of measurement by cable. The transmitter transforms a lineal move of the cable in a rotation of the axis proportional to the distance (number of rounds and angle). This mechanical processing of a linear displacement to an angular one, is measured by any angular measurement system described in the angular measurement section. In general, the more economic devices incorporate an angular potenciómetro (with direct output or amplified) or an encoder.


The measurement principle is the same as encoders but in lineal position. The optical measurement with a piston shape, are built by vástago that moves within the body generating two trains of pulses staggered 90 degrees Devices with magnetic activation are very common. An amplified head moves near a band that incorporates micro-magnets situated with a high resolution. The head activates a pulse every time a micro-magnet is surpassed (resolutions of 0,01mm) providing information on the progress of the head. This system works without contact.

Without contact

Laser measurement. Enables the measurement without contact and high accuracy of long distances (up to 150 m). A head situated in the 0 point emits a laser beam that bounces off the surface of the object whose position we need to know. The same head receives the reflection of mentioned beam and calculates the distance from the time it took to make the travel back and forth. This system allows high accuracy and speed of reading. Occasionally it is affected by light pollution but we have suitable versions for each application. Ultrasounds The ultrasound devices measure the position of a [...]