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DUAL GAS LEAK DETECTOR HX-490S Dual Gas is the most advanced sniffing Helium/Hydrogen leak detector designed specifically for industrial environments. The HX-490S Dual Gas utilizes industrial-grade mass spectrometer to achieve the highest sensitivity, fastest response-time, and smallest footprint. With a touch of a button, this dual gas unit can detect either Helium or Hydrogen tracer gases, while using a single built-in dual purpose calibrated gas leak. Fastest response time in the industry (less than 0.5 seconds) Tracer gas background suppression Sensitivity to 5 x 10-8 atm cc/sec Less than 3 minutes total start-up time Fully automatic calibration sequence with built-in dual purpose gas leak User selectable between helium and hydrogen sniffer Front panel key lock-out Sealed membrane keypad Fully interactive system diagnostics with multilingual displays High output (110dB) adjustable audio alarm Flow units (cc/sec, oz/yr, Pa m3/s) Helium or hydrogen sniffing test

The He-490S is the leader among portable tracer gas leak detectors. With a response time less than 0.5 seconds, sensitivity to 10-8 direct reading atm-cc/sec, and the ability to zero-out background, this is the most aggressive portable leak detector in the industry, with advanced features designed specifically for industrial applications. The He-490S can be integrated with our Smart Charge 5 evacuation and backfill station. Fastest response time in the industry (less than 0.5 seconds) Helium background suppression Maintenance free, dry pump Sensitivity to 5 x 10-8 atm cc/sec Less than 3 minutes total start-up time Fully automatic calibration sequence with built-in 10-5 atm cc/sec gas leak Front panel key lock-out Sealed membrane keypad Fully interactive system diagnostics with multilingual displays High output (110dB) adjustable audio alarm Sensitivity: Smallest detectable helium leak rate 5 x 10-8 atm cc/sec Measuring Scale: 7 decades