Measuring the outer diameter of large workpieces with laser and CCD

June 01 12:07:57, 2024

The outer diameter of large workpieces (generally greater than 500mm), its high-precision measurement has always been a common problem that needs to be solved in China's machinery industry. Laser technology has been used in length measurement in terms of length measurement. In the production workshop environment, the relative measurement accuracy of the dual-frequency laser length measuring instrument can reach 10~(-7)mm or more. At present, the measurement requirements proposed by the steam turbine industry are: measuring range 1~4.2m, measuring accuracy ±3×10~5D (D is the measured diameter), it can be seen that laser technology can fully meet the accuracy factor of length measurement in large diameter measurement. The key is how to accurately capture the two measurement points on the diameter, that is, accurately positioned, thereby converting the diameter measurement into a simple length measurement. This paper proposes a large workpiece outer diameter from the perspective of practicality.

Dissolved Oxygen Sensor

The online dissolved oxygen sensor of the optical method uses the fluorescence method to measure the dissolved oxygen content in water. The dissolved oxygen probe uses advanced optical technology to achieve high-precision dissolved oxygen measurement. The response speed is fast, and it can monitor the change of oxygen in water in real time. The optical dissolved oxygen sensor has high stability and can work stably for a long time. The protection level is IP68, and it can work continuously underwater. The maintenance and calibration of the dissolved oxygen sensor is relatively simple. The optical method does not require electrolyte and routine maintenance. The service life of the fluorescent cap is about 1 year, and the reliability is high. The optical dissolved oxygen sensor is small in size, light in weight, easy to install, and suitable for various water body environments. We have three types of Optical Dissolved Oxygen Sensors, PPS housing with 1 inch mounting thread and Titanium for marine aquaculture use. These dissolved oxygen sensors are all digital output, which is convenient for users to integrate into different systems.

dissolved oxygen sensor

Online Dissolved Oxygen Sensor,Digital Dissolved Oxygen Probe,DO Probe

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