A KALTGAS system needs only a few minutes to produce a cold gas flow with a temperature as low as -180°C (-292°F). In most cases, this KALTGAS system is only used to produce a cold gas flow. The volume of the gas flow is adjusted with the safety control unit. Since the controlled system operates without a heat exchanger, it is not possible to maintain precise temperature stability.

To achieve good temperature and control stability, a post-heating module or heat exchanger is installed. This module can be connected directly to the line, or installed in a chamber adjacent to the cold gas flow. The heat exchanger is designed to heat the cold gas flow to the desired temperature. The final product, a clearly quantified gas flow exiting the heat exchanger at a defined temperature, is ready for use as a cooling agent. With an optimized temperature controller a temperature stability of ±0.1°C can be achieved. With the standard safety control unit, a temperature stability of better than ±0.2°C can be achieved at a steady state.

Apart from the high cooling speed, another advantage of KALTGAS systems is their modular design. By swapping out individual modules such as the N₂ gas line, the LN₂ vaporizer or the heater, it is possible to change the cooling speed, LN₂ consumption as well as the application. The basic modules, including the LN2 container, the vacuum pump and the safety control unit, remain unchanged.