10 K cryocoolers — Sumitomo (SHI) CH-202 (1.8 W at 20 K) 10 K refrigerator
These systems provide 1.8 W of cooling at a temperature of 20 K at the second stage (50 Hz) and can reach a minimum temperature of <10 K (with no parasitic or experimental heat loads).
Standard configuration
Please see the compressor page for more information.
Characteristics:
- Refrigeration capacity 1.8 W at 20 K
- Orientation independent
- Push-button operation
Download the SHI CH-202 Mechanical Drawing. (This is a secured document and we were not able to rotate the pages. However, while viewing the document, you can right-click on the page and select "rotate clockwise" for easy viewing.)
Download the SHI CH-202 Load Map (50 Hz & 60 Hz).
CH-202 specifications
| Refrigeration cycle | Modified Gifford-McMahon | |
| Refrigeration capacity (vertical position) | 50 Hz | 1st stage: 7.3 W at 77 K; 2nd stage: 1.8 W at 20 K |
| 60 Hz | 1st stage: 8.8 W at 77 K; 2nd stage: 2.2 W at 20 K | |
| Lowest temperature 2nd stage † | <10 K | |
| Cooldown time 2nd stage † | 50 Hz: <75 min; 60 Hz: <65 min | |
| Cold head | Ambient temperature: 4 to 40 °C (40 to 104 °F)‡ Weight: 6.8 kg (15 lb) Maintenance interval: 13,000 h | |
| Compressor | Model: HC-4E1 Weight: 75 kg (165 lb) Maintenance interval: 30,000 h | |
| Electrical power | 1-phase; 200, 230/240 V, 50 Hz; 208/230 V, 60 Hz | |
| Power consumption (50/60 Hz) | 2.6/3.0 kW | |
| Flexline length | 10 ft | |
| Flexline weight | ~4.5 lb per line | |
†Lowest temperature and cooldown time are for reference. (Depending on ambient temperature, cooling water temperature, etc.)
‡Cooling capacity may degrade by a maximum of 5% if the ambient temperature is above 28 °C.
Specifications subject to change without notice.