129610A Cryostat System

• Cryogen not in contact with sample - prevents sample damage
• Low cryogen usage (low running cost) - capillary tube around sample space
• 5 K to 600 K (compatible with liquid helium and liquid nitrogen)
• Custom sample holder for compatible with solid, powder or liquid samples

Impedance Spectroscopy measurements combine with sample holders and High Temperature Test Systems, such as furnaces, and Low Temperature Test Systems, such as cryostats, in order to characterize conductivity as a function of temperature.

The flexible solution for materials characterization...
The customized model STVP cryostat is a versatile research tool, designed to operate between 5 K and 600 K. The sample itself is located in an inert, dry, static exchange gas, (e.g. helium), which ensures that the sample is not affected by exposure to cryogen vapor.

Liquid nitrogen (LN2) or liquid helium (LHe) can be used as the cryogen depending on the required operating temperature range. This allows standard tests to be performed using relatively low cost LN2 as the cryogen. Higher cost LHe can be substituted for the duration of tests where very low temperature is required, providing an economical solution to your test requirements.

Applications include:

• Development of advanced polymer materials
• Pharmaceutical applications including drug delivery and freeze drying
• Semiconductor materials
• Composite materials and coatings
• Display materials
• Aerospace materials

High performance..
The 129610A is a high performance temperature control system that provides comprehensive test facilities:

• Operates from 5 K to 600 K using LHe and from 78 K to 600 K using LN2.
• The sample is located in a static thermal exchange gas (e.g. dry helium). This provides repeatable tests on materials that otherwise could be affected by contact with cryogen vapor in flowing vapor type systems.
• Solid and liquid sample holders are included for testing a wide range of materials including solids, gels, oils, powders, pastes....
• Sample holders use guard ring techniques to reject "fringing" effects at the edge of the sample.
• High and low impedance materials samples can be accurately tested using two / four terminal sample connections.
• Fast and accurate temperature settling using a dual channel temperature controller (separately controls the main and sample heaters).
• The system operates with continuous flow of cryogen via a transfer line from the dewar.

The unique flexibility of being able to switch between LN2 and LHe ensures that this high performance cryostat system will fit your requirements, now and in the future.

Solartron Analytical materials test systems...
The 129610A cryostat may be used together with any Solartron materials test system to run I-V, Pulse, C-V, Impedance, Mott-Schottky and a wide range of other materials test techniques, fully integrated with temperature control.

• PC software provides fully integrated electrical measurements with temperature control.
• High and low impedance materials can be analyzed depending on the choice of instrumentation.
• Sample vs. reference and normalization techniques are provided for improved measurement accuracy.
• Wide frequency range.
• Wide impedance range.

Specifications
Cryostat construction	Tubular cryostat with vacuum shroud and radiation shield
Sample Space	Static gas (e.g. helium)
Temperature range	5 K to 600 K - LHe 78 K to 600 K - LN2
Temperature stability	±0.05 K
Temperature probes	Type E thermocouple - Exchange gas heater
Cryogen transfer line	LHe / LN2 transfer line (included)
Dimensions	31" (786 mm) height, 5.75" (146 mm) diameter
Approximate Weight	25 lb (11.3 kg)
Optional Dewars	- A dewar (LN2 or LHe) is needed to operate this system - Compatibility with LN2 dewars that are not supplied as part of the system cannot be guaranteed.
Option A1	LN2 dewar (10 L) LN-10
Dimensions	23" (584 mm) height, 11.25" (286 mm) diameter
Empty Weight	12.5 lb (5.7 kg)
Option A2	LN2 dewar (20 L) LN-20
Dimensions	24.6" (625 mm) height, 15" (381 mm) diameter
Empty Weight	23 lb (10.4 kg)
Option A3	LN2 dewar (50 L) LN-50
Dimensions	30.5" (775 mm) height, 18.5" (470 mm) diameter
Empty Weight	38 lb (17.2 kg)
Option B1 (on application)	LHe dewars are usually provided by cryogen supplier with standard 0.5" transfer line fitting
Option C	Turbo pump (42L/s) TP-75 - or equivalent is needed for system operation.
Temperature Controller (included)
Controller	Lake Shore 332S-T2 Dual Loop (sample and heater)
Dimensions	8.5" (216 mm) W x 3.5" (89 mm) H x 14.5" (368 mm) D
Weight	10.5 lb (4.8 kg)
Power V AC	100, 120, 220, 240 (+6%, -10%), 50 or 60 Hz 150 VA
Interface	PC requires NI IEEE-488 interface - not included in system price
Solid Sample Holder (included)
Electrodes	Inconel electrodes (2x)
Maximum sample size	0.315" (8 mm) height, 1.18" (30 mm) diameter
Temperature range	5 K to 600 K
Lower electrode	Sliding stage with screw adjustment.  Spring-loaded to allow sample expansion / contraction
Connections	4 BNC terminals 2 or 4 terminal measurements
Internal connections	High temperature coaxial cables
Sample measurement	Uses guard ring techniques to reduce errors due to "fringing"
Sample heater	Located close to sample with isothermal shield
Temperature sensor	Type E thermocouple
Liquid Sample Holder (included)
Position	Locates between the electrodes in the solid sample holder
Holder materials	Inconel electrodes (2x), PEEK body
Temperature range	5 K to 500 K
Liquid volume	0.65 mL
Dimensions	0.315" (8 mm) high, 1.18" (30 mm) diameter
System Compatibility	The model 129610A Cryostat is fully compatible with all Solartron Analytical materials test systems.