Products

4 Kelvin Closed Cycle Refrigerator Systems from Janis and SHI

Sumitomo (SHI) 4 K Refrigerator - RDK-101J (0.2 Watt @ 4.2 K)

Overview

Click button to enlarge view of Sumitomo (SHI) 4 K refrigerator cold head model RDK-101D, Janis Research

These systems provide 0.2 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 0.2-Watt systems employ a smaller compressor and cold head than the 1-Watt systems. Compact water- or air-cooled compressors and 3-meter long flexible gas lines complete the refrigerator package.

Standard Configuration

These systems provide 0.2 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 0.2-Watt systems employ a smaller compressor and cold head than the 1-Watt systems. Compact water- or air-cooled compressors and 3-meter long flexible gas lines complete the refrigerator package. (Please see our Compressor page for more information.)

Click button below to enlarge view of mechanical drawing for RDK-101J 4 K refrigerator cold head, Sumitomo, SHI, Janis ResearchEnlarge

RDK-101J Mechanical Drawing

Click button to enlarge view of typical load map for RDK-101D cryocooler at 60 Hz, Sumitomo, SHI, Janis ResearchEnlarge

RDK-101D Typical Load Map (60 Hz)

Click button below to enlarge view of typical load map (at 50 Hz) for RDK-101D cryocooler, Sumitomo, SHI, Janis ResearchEnlarge

RDK-101D Typical Load Map (50 Hz)

Characteristics :

  • Refrigeration Capacity 0.2 W @ 4.2 K
  • Orientation Independent
  • Push-button Operation

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Specifications

COLD HEAD MODEL RDK-101J

Refrigeration Cycle Modified Gifford-McMahon
Refrigeration Capacity
(Vertical Position)
50 Hz 1st stage: 3.0 / 5.0 W @ 45 K
2nd stage: 0.13 W @ 4.2 K
60 Hz 1st stage: 3.0 / 5.0 W @ 45 K
2nd stage: 0.2 W @ 4.2 K
Orientation Any - Capacity Loss: Max 30%
Weight Approximately 7.2 kg
Dimension Approximately 442H x 130W x 226L (mm)
Cooldown Time (300 K to 4.2 K, 2nd Stage) <150 minutes
Flexline Length 3m
Flexline Weight 4 kg per line
Compatible Compressor Unit Model HC-4A2, HC-4E2

Specifications subject to change without notice.

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