Dielectric MGD 2002 Leak Detector Rental Ideal instrument for leak testing in any closed system that can be pressurized with a helium tracer gas. Measures helium and hydrogen from 25 ppm - 100% by volume. Low range resolution ± 25 ppm, high range resolution ± 0.2%. Humidity operation range between 10% RH to 50% RH. 8 Hours of use per charge. $116 View Details Quote Request