The patented Superior AccuTrak VPE represents next-generation technology for identifying leaks in 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 sound to a lower frequency that your ear can interpret. AccuTrak maintains the original sound characteristics, allowing leaks to be distinguished from other competing background sounds. AccuTrak is so sensitive that it can actually hear an eye blink, but most background noise won't interfere with detection accuracy. Audio output 0 Hz to 4 kHz Natural sound conversion allows you to hear the leak and distinguish leaks from mechanical ultrasound or other background. Visual Output 10 element bar graph provides a quick and intuitive visual indication to presence and relative strength Ultrasonic.. Adjustable sensitivity allows the operator to quickly identify leaks from a distance and then zero in on the exact location of the leak.. Dimension - 17 x 7 x 14 in.. Item Weight: 6 lbs. Applications. Leak Detection Air Vacuum Refrigerants ANY GAS. Steam Traps Detect live steam loss in seconds. Valves Detect internal leaks in the ball check needle gate or any type of valve Diagnose thermal expansion valves in just five minutes. Bearing wear Listen for wear and lubrication problems before damage occursCapabilities. Capable of detecting a 5 psi leak of a 0.005 in. 51000 inch hole 20 to 30 feet away depending on background noise. Easily detect any gas that generates ultrasonic sound during flow, including vacuum leaks. Capable of detecting leaks equivalent to 1.5 oz. of refrigerant. Works equally well for compressed air or nitrogen. It is not affected by wind or high concentrations of gas or leaked refrigerant. Kit includes: VPE leak detector. Battery. Touch probe. Waveguide. Sound generator. Noise blocking headphones. Large carrying case