Especially for very short measuring paths between 50 and 200 mm has Turck developed the first miniature linear position sensor LI-Q17, which combines the advantages of previous solutions while eliminating their disadvantages. The LI-Q17 works on the resonator measuring principle, in which the position detection is not carried out by a magnetic position sensor, but inductively via a vibrating system of capacitor and coil. As the only sensor of its kind, the LI-Q17 can also be used reliably where external magnetic fields - such as those caused by large motors or welding systems - could massively impair the function of magnetic position encoders.
The robust LI-Q17 in a fully encapsulated plastic housing is available in four sizes with the measuring ranges 50, 100, 150 and 200 mm for temperature ranges from -40 to + 70 ° C. The first models have an analogue output (0 ... 10 V, 4 ... 20 mA, 0,5 ... 4,5 V), a high-resolution SSI version will follow. Despite its compact design, the new sensor series has extremely short blind zones of 10 mm on the connection side and 22 mm on the head side. The connection is made via a pigtail with 30 cm cable and M12 connector or with 2 m open connection cable. Thanks to its sophisticated installation concept, the user can install and commission the LI-Q17 quickly and easily with the supplied standard accessories - in all installation situations. Sturdy metal clips that snap into the sensor housing allow either vertical or horizontal mounting. The electronics module in the position sensor is rotatably mounted and can therefore be positioned exactly as required by the installation situation. Special measuring ranges can be programmed on site exactly for the respective requirement.