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Portable Hydrogen Leak Detector – MD-490S Dual Gas

Ronkonkoma, NY, February 26, 2013 — Vacuum Instrument Corp., a world leader in the leak detection industry, today introduced their first portable, switchable helium/hydrogen mass spectrometer leak detectors for testing the integrity of components, systems, and parts using helium or hydrogen leak detection techniques.

Designed for use with Helium or 5% H2 in N2 gas mixture, the MD-490S Dual Gas provides an option to companies who want to eliminate the high cost of Helium and associated supply issues. The unit boasts a response time less than 0.5 seconds, sensitivity to smallest detectable leak rate of 5x10-7 Atm-cc/second He/H2 (atmospheric sniffer mode), with a leak rate range of 10-3~10-7 Atm-cc/second direct reading of He/H2 leak rate (compensated for atmospheric sampling), tuned for Mass 2.

Some key features include: Helium/Hydrogen background suppression, less than 3 minutes total start-up time, leak rate ranging, automatic zero, fully interactive system diagnostics with multilingual displays, front panel key lock-out, standard probe and built-in calibrated gas leak. Options include a remote display and exclusive vibrating probe.

The MD-490S Dual Gas leak detector allows for greater access to superior system intelligence with a push of a button to accurately locate and measure leaks in a wide range of applications. Typical applications/industries include: aerospace, medical, automotive, appliance, vacuum, nuclear, as well as a host of others requiring a high level of leak detection sensitivity.

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26 Feb 2013


Vacuum Instruments Corporation is a pioneer in providing state-of-the-art leak detection solutions for diverse applications and industries. Our systems have ensured the safety and performance of countless products that we use in our daily lives from the cars we drive to the air conditioners in our houses, the pacemakers in our bodies, and the satellites we launch into space.
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