RDK-408D2两级Gifford-McMahon制冷机是SHI的中等容量4K制冷机之一，第二级容量为1.0 W @ 4.2 K （50/60 Hz）。它使用空气和水冷式氦压缩机。
| Power Supply |
50 Hz |
60 Hz |
| 2nd Stage Capacity |
1.0 W @ 4.2 K |
| 1st Stage Capacity |
40 W @ 43 K |
50 W @ 43 K |
| Minimum Temperature1 |
<3.5 K |
| Cooldown Time to 4.2 K1 |
<60 Minutes |
| Weight |
18.0 kg (39.7 lbs.) |
| Dimensions (HxWxD) |
557 x 180 x 294 mm
(21.9 x 7.1 x 11.6 in.) |
| Maintenance |
10,000 Hours |
| Regulatory Compliance |
UL/CE, RoHS |
- RDK-408D2 Cold Head
- F-50L/H, F-70L/H, FA-50L/H or FA-70L/H Compressor
- Helium Gas Lines – 6 m (20 ft.)1,2,3; 6-20 m (20-66 ft.)4; 6 m (20 ft.) with Buffer Tank4; or 10 m (33 ft.) [IDU] + 10 m (33 ft.), 20 m (66 ft.) or 30 m (99 ft.) [ODU]5
- Cold Head Cable – 6-20 m (20-66 ft.)
- Power Cable – 5 m (16.5 ft.)1,4; 3-6 m (10-20 ft.)2; 2-8 m (6-27 ft.)3; or 5 m (16.5 ft.) [IDU] + 10 m (33 ft.), 20 m (66 ft.) or 30 m (99 ft.) [ODU]5
- Hose Nipples1
- Tool Kit
1 With F-50
2 With F-70L
3 With F-70H
4 With FA-50
5 With FA-70
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