New laser triangulation sensor from Micro-Epsilon

The new optoNCDT 1900 laser triangulation sensor offers a combination of speed, size and performance and has dimensions of 70 × 31 × 45mm; it weighs just 185g. The measuring rate is continuously adjustable up to 10kHz and can be individually adapted to suit each measurement task. Newly developed, high-performance optics create a small spot size onto the target, which enables tiny objects and surface details to be measured. A new larger aperture for the receiver ensures greater accuracy and repeatability, and the sensor is claimed to be extremely robust, with the ability to withstand high shock and vibrations.

For the first time, a two-stage measurement average is available for signal optimisation. This enables the sensor to provide a clean signal output at edges and steps. Further, averaging ensures a stable, precise signal output and is particularly suitable for high speed measurements of fast moving parts. The sensor uses the newly developed Advanced Surface Compensation (ASC) algorithm that allows it to operate almost regardless of the target material and colour. The exposure time or amount of light produced by the laser sensor is optimally matched to the reflection characteristics of the target surface, which enables reliable measurements even of difficult, changing surfaces. The sensor is very resistant to ambient light interference and so can be used in high-illumination environments including those situations where lasers are combined with Vision Systems and their associated LED lighting. The new software algorithms compensate for ambient light up to 50,000 lux, which means operation in direct sunlight is also improved.

According to Micro-Epsilon, mounting the sensor is fast and easy, with new fitting sleeves provided that automatically align the sensor in the correct position. This enables both easy sensor replacement and ensures continued high precision measurements to be taken with confidence that the new sensor is looking at the same point on the target. Highly flexible cables together with an IP67 protected aluminium die cast housing make the sensor suitable for industrial use.

Using the Micro-Epsilon web interface, the optoNCDT 1900 is stated to be easy to set up and use without requiring any installed operating software. The settings for the measurement task can be quickly selected using application-specific, predefined presets. These are available to suit a wide variety of materials and surface types, including metals, plastics and organics. These presets enable rapid, straightforward set up and help to optimise the sensor for specific tasks. New advanced features for peak separation and peak width determination enable reliable measurements on coated materials, as well as measurement objects located behind glass and on film-sealed components. Data output is via analogue or digital RS422 interface. By using the Micro-Epsilon IF2030 interface module, EtherNet/IP and PROFINET are also available.

The optoNCDT 1900 series is available in measuring ranges from 10mm up to 50mm (with higher ranges from 100mm up to 500mm planned for launch in 2021). Linearity is from <+/- 2.0 microns. Go to www.micro-epsilon.co.uk for further information.