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THERMAL IMAGING FEATURE


surface using a multi-lens optical system. The lenses are arranged in such a way that the white light is dispersed into a monochromatic light by controlled chromatic deviation (aberration). A certain deviation (specific distance) is assigned to each wavelength by a factory calibration. Only the wavelength that is exactly focused on the target surface or material is used for the measurement. This light reflected from the target surface is passed through a confocal aperture onto a spectrometer which detects and processes the spectral changes. Confocal measurement offers nanometre resolutions and operates almost independently of the target material. A very small, constant spot size (typically <10 µm) through the measurement range of the sensor is achieved. Miniature radial and axial confocal versions are available for measuring the internal surfaces of drilled or bored holes in addition to the measurement of narrow apertures, small gaps and cavities.


POWERFUL CONTROLLERS Traditionally, most confocal controllers perform poorly when trying to compensate for difficult and changing surface conditions, particularly in high speed surface scanning tasks. However,


the confocalDT 2451 and 2471 controllers from Micro-Epsilon use newly developed software algorithms based on the company’s experience in optical laser sensor design. These algorithms enable the new controllers to compensate in real time, giving users the ability to scan surfaces very rapidly and at high resolution. The controllers provide high speed triggering interfaces that allows synchronisation with motion control devices including encoders. The result is a controller that provides more stable, higher accuracy measurements down to nanometre resolution if required. These controllers have a rugged


industrial design and use a high performance spectrometer as the measurement detector. The confocalDT 2451, for example,


utilises a white LED as the light source which enables measuring rates up to 10kHz. The confocalDT 2471 provides up to 70KHz measuring rate using an external Xenon light source. Both controllers are provided with Ethernet, EtherCAT, RS422 and analogue output interfaces.


Micro-Epsilon T: 0151 355 6070 www.micro-epsilon.co.uk Enter 307


FREE IPAD FOR REAL- TIME DATA SHARING


Fluke UK is offering a free iPad to purchasers of one from a range of its thermal imaging cameras. Using Fluke’s latest Connect app downloaded to the iPad customers can generate reports and communicate results directly to their client or colleagues from the jobsite. This saves time and money, allows safer working and uses the latest innovations to become more productive. Customers who buy a Ti105, Ti110 or


Ti125 can claim an iPad mini while those who purchase a Ti200, Ti300 or Ti400 can claim an iPad Air providing it was bought after 1 September 2014 and before 31 December 2014. Claims are made via the Fluke website and require proof of purchase. More than 20 tools feature Fluke Connect to connect wirelessly with the app including digital multimeters, thermal imagers, insulation testers and process meters. Thermal imaging cameras in the offer


feature IR-Fusion technology which merges infrared and visual images into a single view to better discover, diagnose and communicate problems.


Fluke UK T: 0207 942 0700 www.fluke.co.uk


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