What instrument is used for full inspection and measurement of the diameter (inner diameter, outer diameter) of parts？Pneumatic measuring device

     Pneumatic measuring instruments are a type of measuring device designed based on principles of fluid statics and fluid dynamics. Composed of pneumatic length sensor, indicator, air filter, and regulator.，They convert length signals into airflow signals through compressed air media and display the values using float or electronic column displays. This instrument has the core advantage of non-contact measurement, which can avoid the interference of measurement force on the results and prevent surface scratches on the workpiece, especially suitable for high-precision and large-scale workpiece detection scenarios in the automotive industry. Its multiple assembly designs can be matched with different measuring heads to achieve measurement of parameters such as inner diameter, outer diameter, groove width, distance between two holes, depth, thickness, roundness, taper, coaxiality, straightness, flatness, parallelism, perpendicularity, ventilation and sealing. It is widely used in the precision machining industry, especially in the production and testing of automotive parts and the refrigeration industry，Specially suitable for high-precision measurement of deep holes, small holes, and thin-walled parts.

The gas momentum meter has high measurement accuracy, with a division value of up to 0.1 micrometers and a repeatability accuracy of up to 0.4 micrometers. Environmental requirements: A stable gas source pressure (such as 0.4-0.6MPa) and a clean environment are required to avoid vibration interference.  ‌

Pneumatic measuring instrument can perform single channel detection or multi-channel measurement. It can achieve full process data statistics and monitoring with one computer, which is convenient for tracking and quality control. The measurement speed is fast and can be standardized using robots, which can reduce human errors and improve production efficiency.

Simultaneously capable of multi screen digital display and over tolerance alarm. Automatic shutdown, achieving fully automatic detection.

The measurement values are displayed through electronic columns or numerical displays