Keyence's new GT2 series pen-type sensor head provides absolute measurements with an accuracy of 1 µm. Their ease of installation, including a wide range of accessories, makes them suitable for all kinds of industrial control applications.
The GT2 contact sensor has been considerably slimmed down to the shape of a pen. Integrated into a cylinder of only 8 mm in diameter, it can now fit into the smallest of inspection areas. While this innovative sensor has become slimmer, it has not lost any of the strengths for which the GT2 series is known. The Scale Shot System II technology, the second generation of Keyence's exclusive measurement system, uses a high-performance receiver, transmitter and processor to provide absolute measurement with high accuracy. This technology uses a high-resolution CMOS sensor that scans the glass scale integrated into the thin body of the sensor head at high speed. Thanks to the different graduation patterns engraved on the scale, this detection principle, which is a world first, ensures absolute position measurement while overcoming the problems encountered by conventional methods. Unlike the scale method (pulse counting), the Scale Shot System II technology eliminates tracking errors due to impacts and zero setting before any operation. And unlike the differential transformer method, accuracy is stable over the entire measurement range and measurements are insensitive to temperature variations. This gives the GT2 pen-type sensor unmatched absolute measurement characteristics in a small footprint.
The seamless sensor head, relay connector and cable (made of highly oil-resistant polyurethane) meet the requirements of NEMA Type 13 and IP67G protection standards. In addition, the highly rigid linear ball bearings ensure long rod life and up to 100 million detections. This significantly reduces maintenance and replacement costs.
Keyence has also made the use of GT2 sensors much easier by adding a multi-head model to its range of amplifiers, which can be connected to up to 5 sensors. Up to 15 sensor heads connected to 3 amplifiers can be connected simultaneously for the easy realization of multi-point measurement systems: shaft diameter measurements or checks for flatness, tilt, warpage, assemblies, etc. Communication units compatible with a wide variety of industrial standards allow the creation of larger systems.
Learn more: https://www.keyence.fr