DESCRIPTION

Cold finger V2A S54K16-Z / S54K25-Z

Cold Trap, two Sections

A special version is the two-section cold trap. It has a KF NW 50 flange as the connection part
This type of cold trap enables the condensation area to be separated from the upper section of the cold trap
This ensures that the removal of the condensation and the cleaning of the cold traps can be carried out very easily
This version is also suitable for when a cold trap has to be permanently installed inside an apparatus so that only the lower section of the cold trap has to be removed in order to empty out the condensation
The KF NW 50 flange connecting piece is secured in place using a spring Aluminium clamp and this is included in our scope of delivery

Applications

versions

KF NW16 = Small flange NW16
KF NW25 = Small flange NW25
special dimensions
special connections

Advantages

made of stainless steel 1.4301
good chemical resistance
good thermal resistance
simple low-cost design
quick exchange is possible
two sections
pressure range: up to 3 bar excess pressure vacuum up to 10-6 mbar

Cold traps / cold fingers

Hence different materials may be present in the gas stream (e.g., water/solvent/acid or alkali containing gases), the condensation temperature of the material to be condensed must be considered first. Having a cold trap, the material made off (glass or metal) and the geometry of the cold trap play an important role regarding the performance of the cold trap. In order to increase the performance of cold traps, these are sometimes provided with integrated baffles, so that the gas is more swirled in the condensation space and thus better condensation can take place on the cold inner wall of the cold trap

In general, it should be noted that the liquid used for cooling (LN2 or CO2) should be at least 50 ° C colder than the condensation temperature of the substance that you want to condensate out of the gas stream. If you would like to filter e.g. a solvent such as methanol (melting point -98 ° C) or acetone (melting point -95 ° C) out of a gas stream, you will need LN2 (about -196 ° C) as a coolant to achieve sufficient cooling capacity in the cold trap. For water, the melting point is 0 ° C which means that a mixture of CO2 and acetone (about -77 ° C) would be sufficient for water vapor

In order to obtain a constant performance of a cold trap / cold finger, the coolant level (LN2) inside the Dewar flask also must be kept constantly on a high level. This can be achieved with automatic LN2 level control. By such an automatic LN2 level controller, the cold trap / cold finger is always supplied with sufficient LN2 coolant, so that an optimal condensation performance of the cold trap / cold finger is guaranteed. For this purpose, complete LN2 level control systems for cold traps are offered

SPECIFICATIONS

Technical Data S 54V

Typ	Condensate capacity	Coolant capacity	for Dewar Type	cold finger connections	Art. No.
Cold finger S 54V-K16-Z	200 ml	1,6 l / 1,2 l	18 C / DSS2000	KF NW 16	17115
Cold finger S 54V-K25-Z	200 ml	1,6 l / 1,2 l	18 C / DSS2000	KF NW 25	17114
Cold finger S 54V-K16-Z-360	300 ml	5 l	Typ S22CAL shortened	KF NW 16	17108
Cold finger S 54V-K16-Z-560	450 ml	7,5 l	Typ S22CAL	KF NW 16	17109

Spare parts

Spare parts	Art.No.
Replacement o-ring (V2A-Viton)	17125
Quick-release clamp	17126
Dewar made of glass Type 18 C	10220
Plastic ring for Type 18 C	17116
Plastic ring for Type 18 C with CO2 wire bracket	17120
Dewar made of stainless steel Type DSS2000	2103
Plastic ring for DSS 2000	17117
Plastic ring for DSS 2000 with CO2 wire bracket	17121
Dewar made of glass Type S22CAL	10324
Dewar aus Glas Type S22CAL shortened	10324-4
Plastic ring for Type 22 CAL	1733-208