Page 6 of catalogue Laser displacement sensors of Micro-Epsilon Messtechnik GmbH & Co. KG

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advantages and special features

optoNCDT 1700: The benchmark in laser triangulation Sensors. The optoNCDT 1700 Series is regarded as the leader in its class with respect to performance data and range of functions. For optimum performance against true direct reflecting surfaces (Glass and mirror) a special optoNCDT 1700DR series is now available. The special features of the optoNCDT 1700 are summarised below: Specular Model - For direct reflecting targets (glass and mirror) optoNCDT 1700DR are Special sensors for optical distance measurement of direct reflecting materials. Three sensors are designed specifically for use with direct reflecting targets like glass or mirror. The high measuring rate of 2.5kHz and the maximum resolution of 0.1µm make precise measurement of the desired targets possible. The reflected laser beam is guided into the receiving array by tilting the sensor and is then directly converted into an electrical signal by the integrated controller. The design is identical to the successful optoNCDT 1700 standard series. As well as the integrated controller, the series also incorporates a membrane keypad directly on the sensor, whereby adjustments without configuration Software are possible. A different tilt angle is necessary for each sensor depending on the measuring range. Therefore, mounting stencils for easy alignment of the sensors to the target are included as standard. Adjustable Limit switches As well as for precise measurement, the optoNCDT 1700 sensors are also used for tolerance or limit monitoring. Two switching points are available which can be configured and adjusted via the remote software (USB connection). The switching hysteresis can also be individually adjusted for each limit point. Adjustable exposure time/measuring rate For poor reflecting targets, the measuring rate can be reduced to enable a longer exposure time. The set measurement rate always remains constant so that with closed-loop control the system response time is always the same. Adjustable exposure time/ measurement rate series 1700
Measuring range 2.5kHz 1.25kHz 625Hz 312.5Hz 0.8ms 1.6ms 3.2ms
Mounting diffuse reflection Mounting direct reflection (tilt tolerance >80°) (tilt tolerance <0.1°)

Offset

Measuring range

Offset

Diffusely reflecting surface

Mirror-like surface

Effective data evaluation using trigger function Extremely efficient data evaluation can be achieved with the external trigger box. Here, the trigger signal switches on the output data steam so that the processing of data which is not required is avoided. This is a high speed trigger which does not delay or reduce the sensor measurement speed. [Specifications on page 35]

Max. exposure time 0.4ms

optoNCDT LL series - Anti speckle sensor The distance information for the triangulation principle is obtained via the reflection of the laser beam. Thereby, surface roughness in the sub-micrometre range causes interference in the laser spot, whereby false measurement results can be obtained. This physical effect is particularly predominant in shiny, highly polished objects and cannot be avoided using currently available products on the market. Micro-Epsilon, as a specialist in measurement technology, announces its new optoNCDT LL, which also makes reliable measurements on shiny metallic objects thanks to an oval light spot. The point-shaped laser beam has now been widened using a special cylindrical lens and projected onto the target. The light spot is absorbed by a receiving array and evaluated. As the light spot is averaged using a special software algorithm, interference is completely filtered out. Another application area for the optoNCDT LL is structured surfaces, where the distance and not the structure itself needs to be measured. The distance information is not influenced by the structure of the surface but instead provides a constantly reliable value of the distance from the target. The optoNCDT 2200LL is based on the successful optoNCDT 2200 model and therefore has all the other advantages of the series, such as fast measured data evaluation or automatic exposure regulation in real-time. The optoNCDT 1700LL has the advantages of the integrated controller, thus making mounting of the sensor in confined spaces, or on robots much more practical. .

Measuring range