Helium Leak Detector. Warm up time less than 5 minutes. Quantitative leak testing from inlet pressures starting at 100 mBar (75 torr). Fast automatic range switching. Automatic zero correction. Max. measurable He leak rate: 10 atm cc/sec. Min. measurable leak rate: 2 x 10E10 atm cc/sec, Leybold 16B & Leybold D4 pumps 100-240V, 50/60Hz