What is a laser measuring instrument

An instrument for measuring the diameter of a workpiece or material with a laser.

The measuring instrument can be divided into laser scanning caliper, CCD projection caliper and laser diffraction caliper. The former two belong to the geometrical principle of optics, while the latter uses the wave principle of optics.

CCD projection diameter measuring instrument, because the speed of the motor is limited after all, and the parallel light band of scanning is not easy to ensure. In addition, with the development of the technology of parallel light tube and CCD, many enterprises now begin to use CCD imaging method to measure the diameter. In China, Shanghai Oule has done this earlier, and its light source uses infrared light with a long wavelength, which has strong anti-interference. Due to the lack of many mechanical parts, the equipment is relatively stable and reliable, However, CCD imaging is restricted by the phase element, and it is not easy to expand the accuracy, especially for the measurement of large-diameter objects, but it cannot be too fine. If it is too fine, it will have the same problem as the scanning caliper.

Zm100 laser caliper consists of two parts: transmitter 1 and receiver 2. The light of the laser light emitting diode 3 forms a light curtain through the optical system 4. The shadow image of the measured object 5 is finally formed on the linear CCD array 7 by the telescope system 6zui. The signal processor 9 calculates its size..

The two-way caliper includes a sensor and a display control unit. The two parts are of a split structure. Laser scanning mode, high precision, online diameter measuring instrument. It is widely used for NDT of outer diameter of various pipes, bars and wires such as communication cables, plastic wires, power cables, optical fibers, enamelled wires, aluminum-plastic pipes, steel and fibers.