Products

4 Kelvin Closed Cycle Refrigerator Systems from Janis and SHI

Sumitomo (SHI) 4 K Refrigerator - RDK-415D (1.5 Watt @ 4.2 K)

Overview

Click button to enlarge view of RDK-415D coldhead from Sumitomo (SHI), available for incorporation into Janis Research 4 Kelvin closed cycle refrigerator systems, cryocoolers, cryogenic equipment

These systems provide 1.5 Watts of cooling at a temperature of 4.2 K at the second stage and can reach a minimum temperature of 3 K (with no parasitic or experimental heat loads). Compact water- or air-cooled compressors and 20-meter long flexible gas lines complete the refrigerator package. (Please see our Compressors page for more information.) Designs incorporating both refrigerator and cryostat are available for a variety of applications.

 

 

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Standard Configuration

These systems provide 1.5 Watts of cooling at a temperature of 4.2 K at the second stage and can reach a minimum temperature of 3 K (with no parasitic or experimental heat loads). Compact water- or air-cooled compressors and 20-meter long flexible gas lines complete the refrigerator package. (Please see our Compressors page for more information.) Designs incorporating both refrigerator and cryostat are available for a variety of applications.

Characteristics:

  • Larger Capacity of 1.5 W @ 4.2 K
  • Orientation Independent
  • Push-button Operation

Please click here to download the RDK-415D drawing and typical load map (224 KB).

The downloaded file will be in PDF format which is viewable and printable with Acrobat Reader, a free plug-in utility from Adobe. To download the free acrobat plug-in software click here.

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Specifications

COLD HEAD MODEL RDK-415D

Refrigeration Cycle Modified Gifford-McMahon
Refrigeration Capacity
(Vertical Position)
50 Hz 1st stage: 35 W @ 50 K
2nd stage: 1.5 W @ 4.2 K
60 Hz 1st stage: 45 W @ 50 K
2nd stage: 1.5 W @ 4.2 K
Orientation Any - Cooling Capacity Loss: Max 15%
Weight Approximately 18.5 kg
Dimension 180D x 294L x 557H (mm)
Maintenance Interval 10,000 Hours
Flexline Length 20m*
Flexline Weight 7.5 kg per line
Compatible Compressor Unit Model CSA-71A, F-70L, F-70H
* Buffer tanks + 6 m flexlines may optionally be substituted for the 20 m long lines. 6 m flexlines weigh 5 kg per line.

Specifications subject to change without notice.

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