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CryoFree304 Print
  • Cryogen-free optical cryostat for electrical conductivity measurements
    in temperature region 4.2 – 273 K

The CryoFree304 is a optical cryostat for electrical conductivity measurements of various materials within temperature region 4.2 – 273 K. The creation of low temperature in the sample room of the CryoFree304 is performed by the use of cryocooler with heat load 0.5 W at 4.2 K

The samples attached to the sample holder are top loading. The vertical sample room is filled by helium gas to secure good heat exchange with second stage (”cold head”) of the cryocooler. The sample temperature is regulated by tSTAT310xc temperature controller that stabilizes the sample temperature with accuracy 0.1 K.

The design of the CryoFree304 cryostat allows long time continuous operation without liquid helium (10000 hours between services) and rapid change of sample during the cryocooler operation.

Basic parameters of the system

Sample temperature range, K

4.2 – 273

Temperature stability, K

 

in range 5 – 50 K

±0.1

in range 50 – 273 K

±0.15

Used cryocoolers and their heat load, W

SHI DE-204SL (at 10 K)

2.5

SHI SRDK-205D (at 4 K)

0.5

Cooldown time to minimal temperature, h

1.5

Low-temperature vacuum, Torr

10-4

Sample room diameter, mm

13.6

Maximum sample size, mm

45 × 10

Electrical feedthrough

19 pin

Used compressors and their power consumption, kW

 

HC-4

2.6

CKW-21A

3.3

Cooling

Air or water-cooled
(According to customer needs)

Continuous working time

Depends on maintenance interval
( service every 10000 hours)

Temperature control system

tSTAT310хc

Computer interface

RS-232

Cryostat dimentions, mm

400 × 400 × 1300

 
Postal address: RTI Ltd., Institutskaya str. b.2, 142432 Chernogolovka, Moscow region, Russian Federation
Phone: +7 800 100-29-70