Liquid Nitrogen Cryostat - Atmosphere Type
Features:
◆ Temperature range (80K~325K), (optional 475K) has good cooling effect and the sample is heated evenly;
◆ Equipped with funnel attachment, which can quickly refill refrigerant;
◆ 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 uses PT100 platinum resistor with good stability and repeatability, one is installed on the heat exchanger and the sample holder respectively;
◆ Top loading allows rapid replacement of samples;
◆ Built-in charcoal to improve vacuum;
◆ Can be customized according to customer requirements;
◆ Equipped with 8 measuring leads as standard, which can be expanded to 32.
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. |
Atmospheric liquid nitrogen cryostat: The sample can be placed in static helium so that the sample itself can be fully cooled. This design can evenly cool samples with poor thermal conductivity and difficulty in thermal anchoring (eg: liquids, powders, and some irregularly shaped samples).
