Atmosphere Type Liquid Nitrogen Cryostat

Introduction
Atmosphere Type Liquid Nitrogen Cryostat device, with its unique design, is able to place the sample in a static helium environment, ensuring that the sample itself is completely cooled. The idea is to provide uniform and efficient cooling for samples with poor thermal conductivity and difficult thermal anchoring, such as liquids, powders, and some irregularly shaped samples. This thermostat is not only suitable for many types of samples, but also ensures that the sample is heated evenly during the cooling process, effectively avoiding errors caused by uneven temperature distribution.
Characteristics of Atmosphere Type Liquid Nitrogen Cryostat
◆ Wide temperature range, can be freely adjusted between 80K to 325K, while providing 475K optional temperature, good cooling effect, sample heating uniform;
◆ Equipped with funnel attachment, can quickly fill refrigerant;
◆ The sample is placed in a static helium atmosphere, suitable for cooling samples with irregular shape and low thermal conductivity;
◆ Temperature sensor adopts PT100 platinum resistance, good stability, good repeatability, respectively installed in the heat exchanger and sample rack, can accurately monitor and record the temperature change of the sample
◆ top mounting can quickly replace the sample;
◆ Built-in charcoal, improve the vacuum, further improve the cooling effect.
◆ Can be customized according to customer requirements;
◆ Standard 8 measurement leads, can be extended to 32, to meet the needs of different experiments on the connection line.
Atmosphere Type Liquid Nitrogen Cryostat product advantages :
3.1 Efficient and convenient: Using liquid nitrogen as the cooling medium, the refrigeration speed is fast, and the operation is simple, which greatly improves the experimental efficiency.
3.2 Stable and reliable: Through accurate temperature control and stable structural design, to ensure the stability of the temperature during the experiment, reduce the experimental error.
3.3 Widely applicable: Suitable for material science, biomedicine, chemistry and other fields to meet different scientific research needs.
3.4 Energy saving and environmental protection: The use of natural evaporation of liquid nitrogen for refrigeration, no additional energy consumption, in line with the concept of green environmental protection.
In addition,atmosphere type liquid nitrogen cryostat device is usually equipped with transparent quartz windows that transmit wavelengths ranging from ultraviolet to near-infrared, and additional window materials can be selected to meet the test needs of a wide spectrum range from far/mid-infrared, ultraviolet to X-ray.
Technical parameters
|
No. |
Technical Parameters |
|
Temperature range |
80K-500K (65K requires additional 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 each for heat exchanger and sample |
|
Temperature stability |
±0.01K depends on temperature controller |
|
Heater |
2 50W heaters |
|
Vacuum interface |
Two KF25 standard interfaces |
|
Sample rotation angle |
Samples can be rotated 360 degrees |
|
Sample environment |
Helium environment |
|
Required vacuum degree |
The vacuum degree of the sandwich layer and the vacuum degree of the sample cavity are ≤1Pa. |
|
Liquid nitrogen holding time |
78K@4h, 100K@3.5h, 200K@2h, 300K@1h |
|
Liquid nitrogen chamber volume |
About 1.6L |
|
Window |
Fused quartz, 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 usage requirements. |
|
Selection instructions |
The main samples tested by this type of cryostat are liquids, powders, samples with poor thermal conductivity and irregular shapes. |
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