Cryogenic Systems
Closed-cycle Cryostat – 4K 6.5K 10K 30K
The closed-cycle cryostat uses the G-M thermodynamic cycle principle to compress and expand helium. The compressor provides the high-pressure helium required during the cycle, which is transmitted to the cold head through a flexible metal helium pipeline. The compressed helium gas expands and is cooled in the cold head, and the expanded low-pressure helium returns to the compressor to repeat the cycle.
The closed-cycle cryostat provided by Dexinmag is a variable temperature low-temperature platform based on GM refrigerators produced by domestic and foreign companies. When used with a high-precision temperature controller, it can accurately control the temperature of samples within the entire temperature range, offering simple operation and low maintenance cost.
It is mainly used for magnetic measurement, optical measurement, photoelectric reaction, light reflection, fluorescence and magnetoresistance tests in low-temperature and vacuum environments. The system provides two stages of cooling: the first stage cools the thermal radiation shield around the sample, and the second stage cools the sample.
Product Image Gallery
Features
- Suitable for electrical, optical and magnetic measurements in low temperature environments.
- Compact structure and high cost performance.
- No refrigerant consumption at low temperatures.
- Long maintenance-free operation.
- Strong scalability and easy operation.
- High vacuum or atmospheric sample environment.
- Optional optical windows with multiple materials.
- Gold-plated oxygen-free copper sample holders.
- Quick-replace sample holder system.
- Silicon diode or Cernox temperature sensors.
- Multiple configuration options for experiments.
Technical Specification
| Model | T-101D | T-101DL | T-305D | T-205D | T-408D2 | T-415D |
|---|---|---|---|---|---|---|
| Temperature range | 4-325K | 3.5-325K | 4-325K | |||
| Heater | 60W one | 70W one | ||||
| Cold head model | 101D | 101DL | 305D | 205D | 408D2 | 415D |
| Lowest temperature | <3K | <3K | 3.5K | <3.5K | <3.5K | <3.5K |
| Cooling time | 150min to 4K | 150min to 4K | 120min to 4K | 90min to 4K | 60min to 4K | 60min to 4K |
| Cooling power | 0.1W@4.2K 3W@50K | 0.1W@4.2K 3W@50K | 0.4W@4.2K 15W@40K | 0.5W@4.2K 3W@50K | 1.0W@4.2K 40W@43K | 1.5W@4.2K 35W@50K |
| Compressor | CAN-11B/C | FA40H | CKW-21A | F50H | ||
| Cooling method | Air cooling | Water cooling | ||||
| Power consumption | 1.2-1.3KW | 4.0-4.4KW | 2.7-3.3KW | 6.5-7.2KW | ||
| Power supply | Single phase 220V 50/60Hz | Three-phase 380V 50/60Hz | ||||
| Cooling water flow | / | 6-9L/min | 3-3.5L/min | 7-10L/min | ||
| Cooling water temperature | / | 4-28℃ | ||||
| Compressor size | 461×400×450 | 532×442×493 | 471×401×450 | 591×450×588 | ||
| Compressor weight | 70Kg | 96Kg | 70Kg | 120Kg |
Additional Models – Set 2
| Models | T-062B | T-082B | T-182B2S | T-204N | T408S2 |
|---|
Additional Models – Set 3
| Models | TCH202 | TCH204 | TCH208R | TCH208L | TCH210 | TCH210N | TCH210L | TKDE210SA |
|---|
Additional Models – Set 4
| Models | T500B | T400B | TC110LT | TCH110 | TCH104 | T125D | TKDE400SX | TKDE535 | TKDE400SA |
|---|
Temperature Sensor
- Silicon diode temperature sensor
- Iron rhodium temperature sensor
- Cernox™ temperature sensor (suitable for magnetic fields)
Temperature Stability
±0.01K depending on DXTC-290 temperature controller.
Vacuum Evacuation
No special requirements, KF25 interface.
Experiment Type
- Optical experiments
- Electrical experiments
- Spectrometer integration
- Three-stage vibration isolation
- Sample vibration less than 1 micron
Number of Windows
Electrical experiments: no windows required.
Optical experiments: 1-5 windows available.
Window Materials
Fused quartz, infrared silicon, sapphire, zinc selenide, zinc sulfide, cadmium, germanium, silicon, cadmium fluoride, Mylar, Kapton. Custom sizes are supported.
Standard Configuration
- Vacuum cover
- Temperature sensor and heater
- Gold-plated oxygen-free copper sample holder
- KF25 vacuum suction port
- KF16 release valve
- 8-pin electrical vacuum connector
- Compressor, cold head drive cable, high-pressure nitrogen pipe and toolkit
- Cold head mounting bracket