Products
4 K Closed Cycle Refrigerator Systems from Janis and SHI
Sumitomo (SHI) 4 K Refrigerator - RDK-205D (0.5 Watt @ 4.2 K)
Overview
These systems provide 0.5 Watts of cooling at a temperature of 4.2 K at the second stage and can reach a minimum temperature of about 3.5 K (with no parasitic or experimental heat loads). The 0.5-Watt systems employ a smaller compressor and cold head than the 1-Watt systems. The compressor is available in a water-cooled version only, in conjunction with 10-meter long flexible gas lines.
Standard Configuration
These systems provide 0.5 Watts of cooling at a temperature of 4.2 K at the second stage and can reach a minimum temperature of about 3.5 K (with no parasitic or experimental heat loads). The 0.5-Watt systems employ a smaller compressor and cold head than the 1-Watt systems. The compressor is available in a water-cooled version only, in conjunction with 10-meter long flexible gas lines. (Please see our Compressor page for more information.)
Characteristics:
- Refrigeration Capacity 0.5 W @ 4.2 K
- Orientation Independent
- Push-button Operation
Applications:
- Superconducting Magnet Cooling
- Cryogenic Property Measurements
- Cryopumps
- Cryogenic Shield Cooling
- Helium Recondensing
- Laboratory Cryostats
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Specifications
COLD HEAD MODEL RDK-205D
| Refrigeration Cycle | Modified Gifford-McMahon |
Refrigeration Capacity
(Vertical Position) | 50 Hz | 1st stage: 3 W @ 50 K
2nd stage: 0.5 W @ 4.2 K |
| 60 Hz | 1st stage: 4 W @ 50 K
2nd stage: 0.5 W @ 4.2 K |
| Orientation | Any - Capacity Loss: Max 20% |
| Weight | Approximately 15 kg |
| Dimension | 180D x 294L x 512H (mm) |
| Maintenance Interval | 10,000 Hours |
| Compatible Compressor Unit Model | CKW-21 |
Specifications subject to change without notice.
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