Cryogenics for Research Advanced Research Systems
UHV Interface
CS-202B System DE-202B
DE-202B
 
Description
   The CS-202B is a versatile closed cycle system that has many applications in ultra-high vacuum research. The system typically includes a compressor, hoses, DE-202B expander, temperature controller and sensor and heater instrumentation.

   Adapted from the DE-202 expander design, the DE-202B has been modified from UHV capability.  The DE-202NB is a modified version of the two stage Gifford-McMahon refrigerator.  This inexpensive modification results in a 6.5 K bottom out temperature and higher capacity at 10 K.

Features Include:
  • 10 K to 350 K operation
    or 6.5 K to 350 K and
    (Options 450K and 800K)
  • Iron -doped gold (0.07% atomic wt. Iron) verses Chromel thermocouple temperature sensors, silicon diodes, or other sensors available upon request
  • 36W, 36V foil resistance heater
  • Fiberglass-sleeved instrumentation wiring for UHV applications
  • High temperature brazed construction
  • Metal-sealed vacuum flanging
  • All welded skirt
  • 6 pin UHV instrumentation feedthrough

Other Features Include:

  • Operates in any position
  • Tested to 10^-8 torr (rated for 10^-11 torr)
  • Bakeable to 200°C with displacer removed (400°C without instrumentation)
  • Flange size and cold tip extension length adjustable to customer's needs
  • Only two moving parts easily maintained in the field without breaking vacuum
  • Requires only electricity and cooling water for operation.


SPECIFICATIONS
Type DE-202B DE-202NB
Temperature Range:  10 to 350 Kelvin
 6.5 to 350 Kelvin
Refrigeration Capacity (without attachments)
Temp
K		 W @
60 Hz		 W @
50 Hz
20 2.5 2.0
Temp
K		 W @
60 Hz		 W @
50 Hz
8 0.5 0.4
10 1 0.8
20 2.5 2
Cooldown Time to 20 Kelvin:
 60 Hz - 50 minutes;
550 Hz - 60 minutes 		60 Hz - 65 minutes;
50 Hz - 75 minutes
Lines 3 m ( 10ft ) flexible stainless steel lines standard
( 15 ft optional )
Power Requirements: 208/230 V, 50/60 Hz, 1.7 kW typical
Other voltages available upon request.
Weights:
 System - 91 Kg (200 lb.)
Compressor - 80 Kg (165 lb.)
Expander - 7 Kg (16 lb.)

 

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Advanced Research Systems, Inc.
7476 Industrial Park Way, Macungie, PA 18062
Tel: 610 967 2120 Fax: 610 967 2395
E mail ars@arscryo.com