10 K cryocoolers — Sumitomo (SHI) CH-204 (6.7 W at 20 K) and CH-204-N (2.5 W at 10 K) 10 K refrigerators
The CH-204 systems provide 6.7 W of cooling at a temperature of 20 K at the second stage and can reach a minimum temperature of <10 K (with no parasitic or experimental heat loads). Upgrade to the model CH-204-N for 2.5 W at 10 K at the second stage.
Standard configuration
Characteristics:
- Refrigeration capacity: 6.7 W at 20 K (CH-204) and 2.5 W at 10 K (CH-204-N)
- Orientation independent
- Push-button operation
Download the SHI CH-204/204-N 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-204 Load Map (50 Hz & 60 Hz)
Download the SHI CH-204-N Load Map (50 Hz & 60 Hz)
CH-204 specifications
(Scroll down for CH-204-N)
| Refrigeration cycle | Modified Gifford-McMahon | |
| Refrigeration capacity (vertical position) | 50 Hz | 1st stage: 13.5 W at 80 K; 2nd stage: 6.7 W at 20 K |
| 60 Hz | 1st stage: 16.2 W at 80 K; 2nd stage: 8.1 W at 20 K | |
| Lowest temperature 2nd stage† | <10 K | |
| Cooldown time 2nd stage† | 50 Hz: <35 min; 60 Hz: <30 min | |
| Cold head | Ambient temperature: 4 to 40 °C (40 to 104 °F)‡ Weight: 7.8 kg (17.2 lb) Maintenance interval: 13,000 h | |
| Compressor | Model: HC-4E1 Weight: 75 kg (165 lb) Maintenance interval: 30,000 h | |
| Electrical power | 1-phase, 208/230 V, 60 Hz; 200 V, 50/60 Hz; 230/240 V, 50 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.
CH-204-N specifications
| Refrigeration cycle | Modified Gifford-McMahon | |
| Refrigeration capacity (vertical position) | 50 Hz | 1st stage: N/A; 2nd stage: 2.5 W at 10 K |
| 60 Hz | 1st stage: N/A; 2nd stage: 3.0 W at 10 K | |
| Lowest temperature 2nd stage† | <6.5 K | |
| Cooldown time 2nd stage† | 50 Hz: <40 min; 60 Hz: <35 min | |
| Cold head | Ambient temperature: 4 to 40 °C (40 to 104 °F)‡ Weight: 7.8 kg (17.2 lb) Maintenance interval: 13,000 h | |
| Compressor | Model: HC-4E1 Weight: 75 kg (165 lb) Maintenance interval: 30,000 h | |
| Electrical power | 1-phase, 208/230 V, 60 Hz; 200 V, 50/60 Hz, 230/40 V, 50 Hz | |
| Power consumption (50/60 Hz) | 2.6/3.0 kW | |
†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.