SHI’s 4K Gifford-McMahon Cryocoolers are recognized as the most reliable and versatile systems available in the marketplace. They feature high cooling capacities, compact designs and are orientation-free. Models like the RDK-408D2 are the standard for MRI and other superconducting magnets. These 4K Cryocoolers can be found cooling a wide variety of analytical and experimental devices, and offer a very cost effective alternative to open-cycle liquid helium systems.
|Cold Head Model||RDK-101D||RDK-305D||RDK-205D||RDK-408D2||RDK-415D|
|1st Stage Capacity||50 Hz||3.0 W @ 60 K||15 W @ 40 K||3.0 W @ 50 K||40 W @ 43 K||35 W @ 50 K|
|60 Hz||5.0 W @ 60 K||20 W @ 40 K||4.0 W @ 50 K||50 W @ 43 K||45 W @ 50 K|
|2nd Stage Capacity||50 Hz||0.1 W @ 4.2 K||0.4 W @ 4.2 K||0.5 W @ 4.2 K||1.0 W @ 4.2 K||1.5 W @ 4.2 K|
|60 Hz||0.1 W @ 4.2 K||0.4 W @ 4.2 K||0.5 W @ 4.2 K||1.0 W @ 4.2 K||1.5 W @ 4.2 K|
|Minimum Temperature1||<3.0 K||<3.5 K||<3.5 K||<3.5 K||<3.5 K|
|Cooldown Time1||50 Hz||<150||<120||<90||<60||<60|
Specifications subject to change without notice.
Note: “RDK” prefix denotes individual cryocoolers, while “SRDK” prefix denotes a complete system. For example, SRDK-415D-A71A is the complete model number for an RDK-415D Cold Head with a CSA-71A Compressor.
1 For reference only. Refer to individual performance specifications.
2 Cold head weight only. Refer to individual performance specifications for weights of additional parts.
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