AccuTrak VPE Basic Kit Ultrasonic Leak Detector Easily detects any gas that generates ultrasonic sound during flow, including vacuum leaks Capable of detecting leaks equivalent to 1.5 oz/year of refrigerant Visual output - 10 element bar graphSuperior AccuTrak advanced patented technology has never been so affordable! The AccuTrak VPE Basic Kit is for technicians who require only the essentials to detect leaks using airborne ultrasound. As with all AccuTrak instruments, the VPE finds leaks for any kind of gas or refrigerant without changing tips or components. Works equally well to find compressed air leaks, nitrogen leaks - even vacuum leaks! AccuTrak can find leaks as small as the equivalent of 1.5 oz per year of refrigerant, or can hear a 5 psi leak up to 30 feet away.The Patented Superior AccuTrak VPE is a state-of-the-art non-invasive leak detector that can detect both pressure and vacuum leaks of ANY GAS. The AccuTrak VPE is ideal for pinpointing leaks in air conditioning, refrigeration, automotive and other 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.How are the VPE kits different?Accutrak offers several versions of its VPE leak detection kits. The following is an overview of what is included with each. VPE Basic Kit VPE Leak Detector Headset Battery Hard Case VPE Standard Kit VPE Leak Detector Headset Battery Hard Case Touch Probe Waveguide VPE Professional Kit VPE Leak Detector Battery Touch Probe Waveguide