The Leybold UL-200 Helium Leak Detector is a self-contained, portable unit. It does not require liquid nitrogen. Capable of detecting leaks into the minus ten range. Turbo pump unit. A dry version of this model is available. It utilizes a diaphragm pump in place of the mechanical pump.
Portable
Self-contained
Does not require liquid nitrogen
Turbo pump unit
Dry version with diaphragm pump available
Detects leaks into the minus ten range