Cold Head with Built-in Liquefying Circuit

This option gives the customers the ability to create liquid helium for their external helium circuit. Only available with our two-stage PT Cold Heads, this built-in liquefying circuit liquefies helium and directs the liquid through a VCR fitting. The helium gas enters the circuit through a fitting on the base plate. The helium is then pre-cooled at the first stage heat exchanger then cooled again on the exterior of the second stage regenerator tube. Lastly, the circuit directs the cooled helium to the second stage heat exchanger, where it condenses.