
Cold traps control the humidity in a gas stream. For this purpose, the gas stream is directed through the cold trap and cooled down to the set temperature. If the dewpoint of the inflowing gas is above the set temperature value, the excessive water vapor condenses and the outstreaming gas has a defined dewpoint, corresponding to the set temperature value. If required, the gas may be humidified prior to streaming into the cold trap.
The cooling inside the cold trap is performed with Peltier coolers regulated by a temperature controller. The condensate accumulates in a hose and may be let off from time to time.




Cold traps may be integrated into existing pneumatic structures. They are appropriate for a wide range of applications, such as:

6 l/min.
-50 to +70 °C dewp.
±0.1 °C dewp.
Peltier cooler
35 K
Pt100
Hose fittings for 6/8 mm dia. tubing
-20 to +50 °C
12 x 27 x 22 cm (W x H x D)
3.5 kg
TR-KF-18
The Temperature Controllers TR-KF-6 and TR-KF-24 are operated with the software TR-KF provided for Windows PCs. The set temperature, actual temperature and status are indicated. Freely adjustable charts show the time course of set-value and temperature.
Two modes of temperature control are available:
There is a choice, how the instrument shall resume operation after a power interruption. User requests can be integrated into the software.

