4 K Cryocoolers — SHI 1 W at 4.2 K
These Sumitomo RDK-408D2 systems provide 1.0 W of cooling at a temperature of 4.2 K at the second stage and can reach a minimum temperature of 3 K (with no parasitic or experimental heat loads). Compact water- or air-cooled compressors and 6 m long flexible gas lines complete the refrigerator package. (Please see our compressors page for more information.) Designs incorporating both refrigerator and cryostat are available for a variety of applications.
- Refrigeration capacity 1 W at 4.2 K
- Orientation independent
- Push-button operation
Download the RDK-408D2 drawing and typical load map (252 KB).
Cold Head Model RDK-408D2 Specifications
|Refrigeration cycle||Modified Gifford-McMahon|
|50/60 Hz||1st stage: 40/50 W at 43 K; 2nd stage: 1.0 W at 4.2 K|
|Orientation||Any — capacity loss: maximum 15%|
|Weight||Approximately 18 kg|
|Dimension||180 W × 294 L × 557 H (mm)|
|Maintenance interval||10,000 h|
|Flexline length||6 m|
|Flexline weight||5 kg per line|
|Compatible compressor unit model||CSA-71A, F-70L, F-70H|
Specifications subject to change without notice.