Liquid Nitrogen Thermostat - Atmosphere Type
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The atmosphere type liquid nitrogen thermostat can place the sample in a static helium gas, so that the sample itself can be fully cooled. This design solution can uniformly cool samples with poor thermal conductivity and difficult thermal anchoring (eg: liquid, powder, and some irregularly shaped samples)
Functions and Features:
※ The temperature range (80K~325K) and (optional 475K) have good cooling effect, and the sample is heated evenly;
※ Equipped with a funnel attachment, the refrigerant can be quickly refilled;
※ The sample is placed in a static helium atmosphere, which is suitable for cooling samples with irregular shapes and low thermal conductivity;
※ The temperature sensor adopts PT100 platinum resistance with good stability and repeatability, and the heat exchanger and the sample holder are respectively
install one;
※ Top loading can quickly change samples;
※ Built-in charcoal to improve vacuum;
※ Can be customized according to customer requirements;
※ Standard 8 measuring leads, can be expanded to 32.
Technical Parameter:
Project
Technical Parameter
Temperature Range
80K-500K (65K need to add decompression accessories)
Cooling Time (room temperature-80K)
about 1h
Electrical Connector
Standard configuration is an 8-pin electrical measurement connector
Thermometer
2 PT100 thermometers, one for heat exchanger and one for sample
Temperature Stability
±0.01K depends on the temperature controller
Heater
2 50W heaters
Vacuum Interface
Two KF25 standard interfaces
Sample Rotation Angle
The sample can be rotated 360 degrees
Sample Environment
Helium atmosphere
Required Vacuum
The vacuum degree of the interlayer and the vacuum degree of the sample chamber should be less than or equal to 1Pa.
Liquid Nitrogen Holding Time
78K@4h、100K@3.5h、200K@2h、300K@1h
Liquid Nitrogen Chamber Volume
About 1.6L
Window
Fused silica, infrared silicon material, sapphire, zinc selenide, zinc sulfide, cadmium, telluride, germanium, silicon, cadmium fluoride, mylar, kapton, beryllium, etc. The size can be customized according to different requirements.
Selection iIstructions
The main samples tested by this type of thermostat are liquids, powders, samples with poor thermal conductivity and irregular shapes
