Liquid Nitrogen Cryostat
The Liquid Nitrogen Cryostat developed by Dexing Magnet is a low-temperature thermostat based on the steady-state bubble principle. Liquid nitrogen contains in the liquid nitrogen tank. By adjusting the cone air plug clearance and changing the boiling condition of the gas-liquid interface, the heat leakage of the constant temperature block is approximately stabilized at a certain value. Then the heating power can be adjusted by the temperature control instrument to make the sample seat change the temperature between 65K-800K rapidly and balance exactly on the set temperature.
Performance and characteristics of Liquid Nitrogen Cryostat:
1. Wide temperature range (80K ~ 500K), high efficiency and fast cooling speed;
2. The sample has an ideal stable environment in a vacuum;
3. a low-temperature adsorbent is arranged in the vacuum interlayer, so that the vacuum can be kept for a long time, and the use time of the liquid nitrogen is prolonged;
4. Selection of PT100 Platinum Resistor with good Stability and repeatability for temperature Sensor;
5. A variety of options to meet different test requirements;
6. Convenient use, perfusion and secondary injection of liquid nitrogen; no need for equipment such as pumps and compressors, saving laboratory space, continuous operation of the system without maintenance;
7. The optical sample holder can install the sample quickly. The electrical sample holder has beautiful and easy-to-use wiring terminal;
8. Different sizes, different requirements of liquid nitrogen thermostat can be designed according to customer requirements. (optical, electrical, magnetic, thermal experiments).
Parameters of Dexinmag series Liquid Nitrogen Cryostat
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No. |
DXNC15 |
DXNC20 |
DXNC30 |
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Liquid nitrogen storage capacity |
400 ml |
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Ultimate vacuum |
10-4 Pa(Ultra-high vacuum options are available up to 10⁻⁸ Pa) |
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Optical window |
No |
No |
0-4，∅40mm*3mm |
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Test sample quantity at the same time |
1 |
1 |
2 |
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Temperature range |
80K - 500K (high and low temperature options available down to 65K - 800K) |
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Temperature Accuracy |
±0.1K |
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Temperature Range |
80K-500K |
80K-500K (liquid nitrogen) 4.2K-500K (liquid helium) |
80K-500K (liquid nitrogen) |
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Low Temperature Option |
65K (liquid nitrogen) |
65K (liquid nitrogen) 2K (liquid nitrogen) |
65K (liquid nitrogen) |
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Cooling Time |
15min to 80K |
15min to 80K or 5K |
15min to 80K |
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Holding Time |
7h@80K; 4.5h@100K; 2.5h@200K |
0.1L/h@80K, 0.6L/h@5K |
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Application Notes |
Photoelectric effect, photoluminescence, electroluminescence, Fourier transform spectrometer, spectrophotometer, ultraviolet, visible, infrared and Th2, Fourier spectroscopy, Mössbauer spectroscopy, photoluminescence (electroluminescence), magneto-optical, X-ray, neutron scattering, DLTS, superconducting materials, etc. |
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Optional configuration
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Electromagnetic waves that can pass through different windows |
Transmitted gamma, X-ray, UV, Vis, IR, THz windows. |
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Vacuum through-wall socket |
Multi-core, high vacuum, SMA/2.92mm/1.85mm microwave electrical penetration, BNC, Triax, fiber optic entry. |
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Measuring leads |
Phosphor bronze wire, manganese copper wire, stainless steel coaxial, flexible coaxial, microwave semi-steel cable, and triaxial cable, etc. |
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Sample holder |
PppmS compatible cards (copper plates), puck/DIP/LCC chip holders, multi-pin pluggable sample cards, probe cards, transmission sample holders, and cuvettes (liquid powder cups), etc. |
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Ultra-high vacuum |
Special treatment is mainly applied to vacuum sealing surfaces, through-wall sockets, low-temperature adhesives, and leads, generally achieving 10⁻⁸ Pa. |
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High and low temperature options |
Low-temperature options include adding a dedicated valve; high-temperature options involve special designs for sample holders, leads, and thermometers. |
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Other |
Different vacuum chamber sizes (sample holder width), larger liquid nitrogen storage tanks, larger window sizes and number, addition of a thermostat overall displacement stage or rotating stage, and sample rod rotation, etc. |
- Number of measurement leads: 8 (can be added);
- Lead material: four-color phosphor bronze low-temperature wire (low-temperature coaxial wire optional);
- Sample size: standard 30mm*30mm or less (sample stage can be customized);
- Test connector: 8-core aviation plug (optional BNC, SMA connector, etc.);
- Window material: fused quartz or other band materials, such as ZnSe, KBr, TPX and other materials are optional;
- The installation of the vacuum cover adopts the latest quick-tightening clamp mode, which not only improves the convenience of replacing samples, but also avoids the impact on the normal use of the equipment due to repeated disassembly and assembly;
- Sample holder: standard electrical, standard optical, probe type, plug-in type, etc. optional (can be customized);
- Main applications: variable temperature testing, variable temperature + magnetic field, variable temperature + magnetic field + optics, and cooperation with various spectrometers;
- Other special types: atmosphere type, continuous flow type;
- Other non-standard customization is acceptable.
Customized Liquid Nitrogen Cryostat
Sample Chamber of Cryostat
Usage scenario of Liquid Nitrogen Cryostat
