| 摘要 |
A measuring device, designed as a hand-held device, is disclosed, having a housing, an optical measuring head movably arranged in the housing for charging a test object with measuring light and for collecting light reflected by the test objec t, an opto-electric converter for converting the collected light into electrical signa ls, a computer processing the electrical signals and controlling the device, a display for disp laying the measurement values obtained from the processing of the electrical signals and op erating members working with the computer for controlling the device functions. Upon a triggering of the measuring process, the measuring head is moved, by a motor con troller by a computer, out of a rest position into a measuring position and back into the r est position. A calibrating position is provided, in the housing, into which the measuring hea d can be moved and in which a calibration test object is disposed. The computer measures the calibration test object and generates calibration measurement values. Reference values corresponding to the calibration measurement values are stored in the computer. The computer performs calibration of the device by using calibration measurement val ues and the stored reference values. An automatic measurement of the calibration test ob jects in accordance with a predetermined program and a corresponding calibration or check ing processes of the device can be performed. An accurate measurement of the calibra tion test objects is achieved as the calibration test objects are always available and can not be confused with calibration test objects of other measuring devices.
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