The Patented Superior AccuTrak VPE represents state-of-the-art technology for pinpointing leaks is air conditioning and refrigeration systems. AccuTrak is extremely sensitive to the ultrasonic sound of a turbulent gas leak. Using a technology called heterodyning it translates the sound to a lower frequency which your ear can interpret. AccuTrak maintains the original sound characteristics making it possible to distinguish leaks from other competing background sounds. AccuTrak is so sensitive you can actually hear the blink of an eye yet most background noise will not interfere with detection accuracy.Features. Audio Output 0 Hz to 4 kHz Natural Sound conversion allows you to Hear the Leak and distinguish leaks from mechanical or other background ultrasound.. Visual Output 10 element bar graph provides quick and intuitive visual indication to presence of and relative strength of ultrasound.. Adjustable Sensitivity allows operator to quickly identify leaks from a distance and then zero in on the exact location of the leak.. Dimension - 14 x 4 x 11 in.. Item Weight - 3 lbs.Applications. Leak Detection Air Vacuum Refrigerants ANY GAS. Steam Traps Detect live steam loss in seconds. Valves Detecthear internal leakage in check ball needle gate or any type of valve Diagnose thermal expansion valves in just five minutes. Bearing Wear Hear wear and lubrication problems before damage is doneCapabilities. Capable of detecting a 5 psi leak out of a 0.005 in. 51000 inch hole 20 to 30 feet away depending on background noise.. Easily detects any gas that generates ultrasonic sound during flow including vacuum leaks.. Capable of detecting leaks equivalent to 1.5 ozyear of Refrigerant.. Works equally well for compressed Air or Nitrogen.. Not affected by wind or high concentrations of leaked gas or refrigerant.Kit Includes. VPE Leak Detector. Headset. Battery. Hard Case