4 K Cryocoolers — SHI 0.2 W at 4.2 K
These Sumitomo RDK-101J systems provide 0.2 W of cooling at a temperature of 4.2 K at the second stage and can reach a minimum temperature of about 3.0 K (with no parasitic or experimental heat loads). The 0.2 W systems employ a smaller compressor and cold head than the 1 W systems. Compact water- or air-cooled compressors and 3 m long flexible gas lines complete the refrigerator package.
Please see our compressor page for more information.
- Refrigeration capacity 0.2 W at 4.2 K
- Orientation independent
- Push-button operation
Cold Head Model RDK-101J Specifications
|Refrigeration cycle||Modified Gifford-McMahon|
|Refrigeration capacity (vertical position)||50 Hz||1st stage: 3.0 W at 45 K|
2nd stage: 0.16 W at 4.2 K
|60 Hz||1st stage: 5.0 W at 45 K|
2nd stage: 0.2 W at 4.2 K
|Orientation||Any — capacity loss: maximum 30%|
|Weight||Approximately 7.2 kg|
|Dimension||Approximately 442 H × 130 W × 226 L (mm)|
|Cooldown time (300 K to 4.2 K, 2nd stage)||<150 min|
|Flexline length||3 m|
|Flexline weight||4 kg per line|
|Compatible compressor unit model||HC-4A2, HC-4E2|
Specifications subject to change without notice.