Janis Research, cryogenics, cryostats

4 Kelvin
Closed Cycle Refrigerator Systems
from Janis and SHI

Sumitomo (SHI) 4 K Refrigerator

RDK-101D

0.1 Watt @ 4.2 K

Click here for a larger view of Model RDK-101D cold head from Sumitomo, available through Janis Research, North American Distributor - cryogenicsThese systems provide 0.1 Watts of cooling at a temperature of 4.2 K at the second stage and can reach a minimum temperature of about 3.0 K (with no parasitic or experimental heat loads).  The 0.1-Watt systems employ a smaller compressor and cold head than the 1-Watt systems.  The compressor is available in an air-cooled version only, in conjunction with 3-meter long flexible gas lines. (Please see our Compressor page for more information.) 

 

 

 

Characteristics: Applications:
Refrigeration Capacity 0.1 W @ 4.2 K Laboratory Cryostats
Orientation Independent Cryogenic Property Measurements
Push-button Operation Cryopumps
Optical Studies
Magnetic Studies

COLD HEAD MODEL RDK-101D

Specifications 
Refrigeration Cycle   Modified Gifford-McMahon
Refrigeration Capacity   50 Hz            1st stage:    3 W @ 60 K 
(Vertical Position)                       2nd stage:  0.1 W @ 4.2 K
  60 Hz             1st stage:    5 W @ 60 K
                        2nd stage:  0.1 W @ 4.2 K
Orientation Any - Capacity Loss:  Max 30%
Weight  Approximately 7.2 kg
Dimension 130D x 226L x 442H (mm)
Cooldown Time (to 4.2 K) <150 minutes
Compatible Compressor Unit Model CNA-11C

Specifications subject to change without notice.  

Please click here to view the mechanical drawing and typical load map for the Cold Head Model RDK-101D 0.1 Watt @ 4.2 K refrigerator.

 

Table of Contents

Pages

Introduction 1
Sample in Vacuum Systems (SHI-4 series) 2, 3
Sample in Static Exchange Gas Systems (SHI-950 series) 4, 5
Application-specific Models - Neutron Scattering 6
Application-specific Models - Mössbauer Spectroscopy (SHI-850 series) 7, 8
Application-specific Models - Micro-manipulated Probe Station (CCR4-MMP series) 9
Application-specific Models - FTIR Optical Spectroscopy: Low Vibration Pulse Tube (PT-950-FTIR) 10
Custom Engineered and Specialized 4 K Closed Cycle Cryostat Systems 11
0.1 Watt @ 4.2 K Refrigerator from SHI (RDK-101D) 12, 13
0.4 Watt @ 4.2 K Refrigerator from SHI (RDK-305D) 14, 15
0.5 Watt @ 4.2 K Refrigerator from SHI (RDK-205D) 16, 17
1 Watt @ 4.2 K Refrigerator from SHI (RDK-408D2) 18
1.5 Watt @ 4.2 K Refrigerator from SHI (RDK-415D) 19
6 K Cryocooler from SHI (RDK-408S) 20, 21
0.1 Watt Compressor Unit from SHI (CNA-11) 22
0.4 Watt Compressor Units from SHI (CNA-31C, CNA-31D) 23
0.5 Watt Compressor Units from SHI (CKW-21) 24
1 Watt & 1.5 Watt Compressor Units from SHI (CSA-71 & F-50) 25
Pulse Tube Refrigerators 26
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