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Closed cycle low-temperature thermostat
The closed-loop refrigeration machine utilizes the G-M thermodynamic cycle principle to compress and expand helium gas. The compressor provides high-pressure helium gas, which is transmitted to the cold head through a flexible metal helium gas pipeline. The compressed helium gas expands and cools inside the cold head, and the expanded low-pressure helium gas returns to the compressor for repeated circulation. The closed-loop low-temperature thermostat provided by our company is a controllable variable temperature low-temperature platform based on the GM refrigeration machine. Combined with a high-precision temperature controller, it can accurately control the temperature of the sample throughout the entire working range, with simple operation and low maintenance costs. Mainly used for magnetic measurement, optical measurement, photoelectric reaction, light reflection, fluorescence, and magnetic resistance experiments in low temperature and vacuum environments.
Advantages:
Compact structure, high cost-effectiveness, no refrigerant consumption, long maintenance cycle, strong scalability, easy to use;
The sample is in a high vacuum environment;
※ Can integrate optical windows with multiple optional window materials;
Multiple gold-plated oxygen free copper sample holders can be interchanged to meet different experimental needs;
Suitable for electrical, optical, and magnetic measurements in low-temperature environments;
Using a silicon diode thermometer (non-magnetic environment) or a CerNOx thermometer (strong magnetic environment) for temperature measurement, the temperature can reach below 4K (under no-load conditions);
Multiple temperature zones and different cooling capacities are available, and both domestic and imported products are available.
Basic configuration:
※ One set of vacuum hood
※ One temperature sensor and one temperature control heater each
※ One gold-plated oxygen free copper sample holder
※ Vacuum suction port KF25
※ Release valve KF16
※ One 8-pin electrical vacuum connector and one 6-pin temperature control connector
※ Supporting compressor, cold head drive line, high-pressure helium pipe
A set of standard cold head placement brackets
Purpose:
Mainly used for magnetic measurement, optical measurement, photoelectric reaction, light reflection, fluorescence and magnetic resistance in low-temperature and vacuum environments, including material research, superconductivity, cold pump, cold screen and other experiments.
※ Optoelectronic effect
UV/VIS/IR spectral testing
Optional configuration:
※ Larger sample space
Electrical connectors (BNC, SMA, SMK, and multi pin connectors)
Special shaped windows (such as recessed windows)
※ Various low-temperature electrical leads (coaxial line, tee shaft, phosphor bronze twisted pair, microwave half steel cable, etc.)
