Buyers Guide 2023

28 | Plant & Works Engineering www.pwemag.co.uk Annual Buyers’Guide 2023 Process, Controls & Plant Focus on: Sensors & Measurement Multi-layer measurement (e.g. coatings, solar cells, photo masks, smartphone screens) Capacitive sensor technology The principle of capacitive displacement measurement using the capaNCDT (capacitive Non-Contact Displacement Transducer) system is based on how an ideal plate-type capacitor operates. The two plate electrodes are represented by the sensor and the opposing measurement object. If a constant alternating current flows through the sensor capacitor, the amplitude of the alternating voltage on the sensor is proportional to the distance between the capacitor electrodes. The alternating current is demodulated and output as, for example, an analogue signal. Capacitive sensors are designed to measure against any electrically conductive surface, even semi-conductors. Laser scanners produce a wide laser line on the target to solve various measuring tasks in industry and automation: profile, width, height, depth, edge, bead, gap, angle, roundness and many more. Measurement methods: One-sided thickness measurement of electrically non-conductive materials on metallic objects. Two-sided measurement. 2D 3D laser scanners Laser scanners produce a wide laser line on the target to solve various measuring tasks in industry and automation: profile, width, height, depth, edge, bead, gap, angle, roundness and many more. Measurement methods: One-sided measurement. Two-sided measurement. Profile measurement Edge Measurement ThruBeam laser micrometers Optical micrometers are primarily used as part of the manufacturing process and quality control of a production line, measuring continuous material, as well as single parts. A wide beam is projected between the transmitter and receiver to create a curtain of light. Objects breaking the beam create edges or shadowed areas that are used to determine the object size or position. Suitable for measuring diameters, gaps, segments and edges, these sensors can measure any material that breaks or reduces the light received. Measurement methods: One-sided measurement. Two-sided measurement. Profile measurement Edge Measurement *Glenn Wedgbrow is Business Development Manager at Micro-Epsilon UK.