Air gaging is an old and proven technique of non-contact measurement for measuring with very high precision all kinds of dimensions on precision mechanical parts, but it is especially adapted for diameters with tight tolerances
Metro has modernized this measurement technique by making it more efficient and accessible, making it very useful in precision mechanics factories. The largest field of application is on the measurement of external diameters (measurement with a pneumatic ring gauge) or internal diameters (measurement with an air plug gauge), but it is also possible to measure tapers, flatness, etc.
Air gaging is ideal for controlling large series of parts (automotive sector for example) or parts with high added value (aeronautics, medical, defense). It is possible to measure diameters between 0.8mm and up to 130mm or more. The air plugs or rings can measure 1 or more diameters simultaneously.
Metro air gage systems can achieve excellent repeatability, down to 0.02µm on certain demanding applications (injector parts for example).
Metro can provide you with a complete solution: air ring or air plug gage + associated display and accessories (adapted pressure regulator, pipes, masters, certificates).
Metro can provide measuring stations with all needed elements attached on a compact fixture. M-Bus modules and regulator are attached on the rear side
Pneumatic measuring systems can be used directly in the workshop, and are not very sensitive to the cleanliness of the parts, which gives a great advantage over optical measuring systems which require an irreproachable part cleanliness during the measurement.
We also supply systems to be installed on automated machines (floating mounting), combined with a Profinet or a Modbus PLC communication.
The large majority of air gages are unique parts made on demand according to your needs.
Here is a non-exhaustive list of possibilities:
Metro manufactures electronics to operate air gages
Thanks to our design, our system can adapt to all brands of air gages with at least the same performance as the original system
Send us the drawing of your part with the dimensions to be checked and we will send you a proposal. Specify whether the measurement is manual (table or handle mount) or automated, the number of parts to be measured or the cycle time expectations. After ordering, we will make a drawing that we will have you validate to start manufacturing. We can either provide a air gage to connect to your existing electronics or provide a complete solution with the display.