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Urma AG, Switzerland www.urma.ch
page 12
4.2 Calibration of Presetter
4.2.1 Set the camera’s working distance
The working distance is defined as the distance between the front edge of the cam-
era tube shield and the object to be measured, for example a tool cutting edge.
This measurement is preset by the design and the production tolerances of the cam-
era tube shield (lens).
The working distance must be set following the instructions in the
enclosed calibration log with a permissible tolerance of 100 ±
0.1mm. (3.937 ± .004”)
Object to be
measured
Working distance
Illumination
Optical axis
Camera
Aligning the camera and the lamp
