4 K Cryocoolers — SHI 0.4 W at 4.2 K
These Sumitomo RDK-305D systems provide 0.4 W of cooling at a temperature of 4.2 K at the second stage and can reach a minimum temperature below 3.5 K (with no parasitic or experimental heat loads). The 0.4 W systems employ a smaller compressor and cold head than the 1 W systems. The compressor is available in an air-cooled version only, in conjunction with 10 m long flexible gas lines.
Please see our compressor page for more information.
- Refrigeration capacity 0.4 W at 4.2 K
- Orientation independent
- Push-button operation
Cold Head Model RDK-305D Specifications
|Refrigeration cycle||Modified Gifford-McMahon|
|Refrigeration capacity (vertical position)||50 Hz||1st stage: 15 W at 40 K; 2nd stage: 0.4 W at 4.2 K|
|60 Hz||1st stage: 20 W at 40 K; 2nd stage: 0.4 W at 4.2 K|
|Orientation||Any — capacity loss: maximum 15/25% (2nd/1st)|
|Weight||Approximately 16 kg|
|Dimension||Approximately 180 D × 294 L × 512 H (mm)|
|Maintenance interval||10,000 h|
|Flexline length||10 m|
|Flexline weight||7 kg per line|
|Compatible compressor unit model||CNA-31C, CNA-31D|
Specifications subject to change without notice.