Automatic Leak Testing 

Automatic Leak Testing

Ulvac is a leading manufacturer of Automatic Leak Testing (ALT) systems with over 700 installations worldwide. Ulvac specializes in the manufacture of custom systems for automatic leak testing that are used in automotive, refrigeration, air conditioning and other industrial production lines. Based on the Heliot 700 leak detector, and employing Ulvac pumps, valves and gauges throughout, these ALT systems are modular in design with most of the major components being manufactured by Ulvac. This modular approach to design enables customization of the system to individual customers requirements, while maintaining as many standard components as possible, providing optimum performance and support.

Air to air cycling of the ALT system is automatic; components are placed in a vacuum chamber, charged with helium and the chamber is evacuated. A mass spectrometer based helium leak detector is used to measure a total leak rate for the components to check all leak points to guarantee product quality. Pump systems are sized to evacuate both chamber and test part to a suitable pressure within a short period of time to meet the requirements of desired machine cycle time. The leak detector used is the proven Heliot 700 with a sensitivity to detect helium leaks as small as 1 x 10E^-12 mbar-liters/second. The factory automation interface with the ALT system can be engineered and supped by Ulvac as well for seamless integration into the production line. Each system is equipped with a modem link so that system software troubleshooting can be done remotely by a telephone to the Ulvac service center. This capability is extremely useful in enabling remote assistance for faultfinding and completing software changes with minimal delays in a production setting.

Applications

Leak testing heat exchanger.

Leak Testing Compressor.

Leak Testing Airbag Inflator.

Leak testing cast aluminum wheel hub.

Large Chamber Type ALT Systems  can be custom made up to 10m³