The Hong Kong Government’s Innovation & Technology Commission has opened a acoustic anechoic chamber to provide ultra-precise metrology and calibration essential for advanced manufacturing and aerospace components
The free-field acoustic chamber at the Hong Kong Innovation and Technology Commission’s (HKITC) Standards and Calibration Laboratory (SCL) was installed last year.
Located in the Tseung Kwan O Government Offices, the lab supports several industries that require rigorous international measurement traceability.
Key capabilities relevant to the aerospace and precision manufacturing sectors include:
- Submicron linear scale calibration: SCL uses automated systems equipped with laser interferometers, such as those from Renishaw, to achieve submicron measurement precision and compensate for environmental variations.
- Precision time and frequency: The facility features an atomic clock system linked to global positioning networks, and has developed patented technology for high-precision time-interval calibration with a resolution of 0.001 s.
- Acoustic and environmental testing: A specialized anechoic chamber is used to calibrate acoustic instruments, critical for aerospace noise compliance and testing.
The SCL also houses an atomic clock system, which operates at the exact caesium frequency, working in tandem with the global positioning system to ensure a level of precision comparable to international standards.
“The system can output highly precise frequency signals, providing a reliable and consistent reference for various measurement tasks such as network transmission, audio-visual synchronisation and industrial automation,” said Alvis Au Yeung, another electronics engineer at the commission.
