4 Kelvin
Closed Cycle Refrigerator Systems
from Janis and SHI

SHI-4-5

SHI-4

SHI-4-15

Temperature Range

<4.5 K to 325 K

<4 K to 325 K

<4 K to 325 K

Initial Cooldown Time

~70 Minutes to 4.5 K

60 Minutes to 4 K

60 Minutes to 4 K

Cold Head Cooling Power

0.1 W @ 4.2 K  

0.5 W @ 4.2 K

1 W @ 4.2 K

1.5 W @ 4.2 K  

Cryostat Weight

53 lbs.

62 lbs.

63 lbs.  

Compressor Cooling

Water

Air or Water

Air or Water 

*With four open radiation shield ports, f1 view angle.
NOTE: 500 K and 800 K versions available on most models.