Closed-cycle Cryostat - 4K 6.5K 10K 30K

Closed cycle low temperature thermostat, its working principle is based on the G-M thermodynamic cycle principle, by compressing and expanding helium to achieve low temperature constant temperature effect. In this process, the compressor plays a crucial role, which is responsible for providing the high-pressure helium gas required for the cycle. This high-pressure helium gas is delivered to the cold head without error through carefully designed flexible metal pipes. In the cold head, the helium gas undergoes an expansion process, thus achieving a cooling effect. The cooled, low-pressure helium is returned to the compressor, ready to start a new cycle.

The closed cycle low temperature thermostat launched by Dexing Mag is a variable temperature and low temperature platform which is further innovated and developed on the basis of extensive reference to general refrigerator technology at home and abroad. This thermostat is used in conjunction with a high-precision thermostat to ensure precise control of the sample temperature over the entire temperature range. It is easy to operate and low maintenance cost, so it is loved by users.

The thermostat is mainly used in various scientific experiments in low temperature and vacuum environment, such as magnetic measurement, optical measurement, photoelectric reaction, light reflection, fluorescence and magnetoresistance measurement. Its unique design includes two cooling stages. The first stage cooling is mainly used to reduce the temperature of the thermal radiation shielding around the sample, while the second stage cooling acts directly on the sample itself to ensure that it reaches the desired low temperature state.

First, it is suitable for a variety of scientific experiments such as electricity, light and magnetic measurement in low temperature environment, which meets the diversified needs of scientific research work. Secondly, it is compact in structure, cost-effective, and does not need to consume refrigerant in low temperature environment, and the maintenance-free cycle is long, which greatly reduces the use cost. In addition, the thermostat has strong scalability, allowing users to customize it according to experimental needs. When it comes to sample environments, the thermostat also performs well. It supports the sample in a high vacuum environment or atmosphere, providing users with flexible experimental conditions. At the same time, the thermostat can also integrate optical Windows, and users can choose a variety of window materials according to their needs to meet different experimental needs. In order to meet the measurement accuracy requirements of different experiments, Dexin Mag provides a variety of gold-plated oxygen-free copper samplers for users to choose. These scaffolds are well designed and can be replaced quickly, which greatly improves the experimental efficiency. In addition, a silicon diode temperature sensor or a Cernox temperature sensor (for strong magnetic fields) is installed on the cold finger, ensuring accurate monitoring of the sample temperature.

1. Temperature sensor: Silicon diode temperature sensor, iron rhodium temperature sensor, CernoxTM temperature sensor (for magnetic field)

2. Temperature stability :±0.01K depends on DXTC-290 thermostat;

3. Vacuum pumping: no special requirements are KF25;

4. Experiment type: It can be used for optical and electrical experiments. In addition to the tube chiller, other cold heads can be installed at any Angle. In addition, when used in conjunction with the spectrometer, the cold head can be equipped with three-stage shock absorption, and the sample vibration is less than 1 micron;

5. Number of Windows: No need to open Windows when conducting electrical experiments. For optical experiments, 1-5 Windows can be used;

6. Window selection: fused quartz, infrared silicon material, sapphire, zinc selenide, zinc sulfide, cadmium, sulfide, germanium, silicon, cadmium fluoride, polyester film, Capton, wrinkles, size can be customized.

7. Integrated configuration: 1 set of vacuum cover; ② Temperature sensor and temperature control heater; ③ gold-plated oxygen-free copper sample rack; ④ A vacuum suction KF25; ⑤ Bleed valve KF16; An 8pin electric vacuum connector, a temperature sensor and heater share a 6-core connector; ⑦ Supporting compressor, cold head drive pipe, high pressure nitrogen pipe and toolbox; ⑧ A set of standard cold head placement brackets.