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

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. 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 closed-cycle cryostat includes two stages of cooling. The first stage is used to cool the thermal radiation shield around the sample, and the second stage is used to cool the sample.

Features:

◆ Suitable for electrical, optical and magnetic measurements in low temperature environments;
◆ Compact structure, high cost performance, no refrigerant consumption at low temperatures, long maintenance-free period, strong scalability, and easy to use;
◆ The sample is in a high vacuum environment or atmosphere;
◆ Optical windows can be integrated and a variety of optional window materials are available;
◆ A variety of gold-plated oxygen-free copper sample holders can meet the measurement needs of different experimental requirements, and the sample holders can be quickly replaced;
◆ A silicon diode temperature sensor or Cernox temperature sensor (used in strong magnetic fields) is installed on the cold finger;
◆ A variety of options can meet the measurement needs of different experiments.

Technical specification

Model	DX-101D	DX-101DL	DX-305D	DX-205D	DX-408D2	DX-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/h	1.2-1.3KW		4.0-4.4KW	2.7-3.3KW	6.5-7.2KW
Power supply requirements	Single phase 220V 50/60Hz		Three-phase 380V 50/60Hz
Cooling water flow	/		6-9L/min	3.0-3.5L/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

Model	DX-062B	DX-082B	DX-182B2S	DX-204N	DX-408S2
Temperature range	3.5-325K			7-325K
Heater	70W, one
Cold head model	062B	082B	182B2S	204N	408S2
lowest temperature	<3.0K	<3.0K	<2.8K	<6.5K	<7K
Cooling time	100min to 4K	80min to 4K	60min to 4K	60min to 10K
Cooling power	0.5W@4.2K 30W@80K	1W@4.2K 40W@45K	1.5W@4.2K 36W@48K	13.5W@80K 2.5W@10K	30W@4.5K
Compressor	F50H	F70H	F-100	HC-4E	F-50
Cooling method	Water cooling
Power consumption/h	6.5-7.2KW	12-13.7KW	12-13.7KW	2.6KW	6.5-7.2KW
Power supply requirements	Three-phase 380V 50/60Hz			Single phase 220V 50/60Hz	Three-phase 380V 50/60Hz
Cooling water flow	7-10L/min	6-9L/min	6-10L/min	2.7L/min	7-10L/min
Cooling water temperature	4-28℃
Compressor size	591 * 450 * 588	532 * 443 * 493	1331 * 511 * 512	504 * 430 * 485	591 * 450 * 588
Compressor weight	120Kg	100Kg	250Kg	75Kg	120Kg

Model	DXCH202	TCH204	DXCH208R	DXCH208L	DXCH210	DXCH210N	DXCH210L	DXKDE210SA
Temperature range	10-325K
Heater	50W		70W
Cold head model	CH-202	CH-204	CH208R	CH208L	CH210	CH210N	CH210L	KDE210SA
lowest temperature	<10K
Cooling time	75min to 10K	40min to 20K	60min to 20K			60min to 10K
Cooling power		7.5W@20K 13.5W@80K	6W@20K 80W@77K	8W@20K 28W@77K	6W@20K 110W@77K	3W@10K 20W@35K	9.5W@20K 75W@60K	5W@10K 40W@45K
Compressor	HC-4E		F70H					KDC6000V
Cooling method	Water cooling
Power consumption/h	2.6kw		12-13.7KW					6.5KW
Power supply requirements	Single phase 220V 50/60Hz		Three-phase 380V 50/60Hz
Cooling water flow	2.7L/min		6-9L/min					7-10L/min
Cooling water temperature	(4-28℃)
Compressor size	504430485		532442493					532443493
Compressor weight	75Kg		100Kg					118Kg

Model	DX500B	DX400B	DXC110LT	DXCH110	DXCH104	DX125D	DXKDE400SX	DXKDE535	DXKDE400SA
Temperature range	14-325K	25-325K	15-325K	40-325K		30-325K	14-325K	15-325K	30-325K
Heater	150W			300W	150W	70W	150W	100w
Cold head model	RDK-500B	RDK400B	C110LT	CH110	CH104	RD-125D	KDE400SX	KDE535	KDE400SA
lowest temperature	<14K	<25K	<15K	<40K	<40K	30K	<14K	<15K	<30K
Cooling time	70min to 40K	30min to40K	35min to 30K	30min to 77K	40min to77K	25min to77K	60min to20K
Cooling power	40W@20K 80W@30K	54W@40K	80W@40K	175W@77K	34W@77K	30W@77K	40W@20K 80W@30K	8W@20K 35W@77K	54W@40K
Compressor	F70H					CNA-11C	KDC6000V
Cooling method	Water cooling					Air cooling	Water cooling
Power consumption/h	12-13.7KW					1.2-1.3KW	6.5KW
Power supply requirements	Three-phase 380V 50/60Hz					Single phase 220V 50/60Hz	Three-phase 380V 50/60Hz
Cooling water flow	6-9L/min					/	7-10L/min
Cooling water temperature	(4-28℃)					/	(4-28℃)
Compressor size	532442493					610390450	532443493
Compressor weight	100Kg					75Kg	118Kg

Note:

1. Temperature Sensor: Silicon diode temperature sensor, iron rhodium temperature sensor, CernoxTM temperature sensor (suitable for magnetic fields);

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

3. Vacuum evacuation: No special requirements are KF25;

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

5. Number of windows: When conducting electrical experiments, there is no need to open windows. When conducting optical experiments, 1-5 windows can be used;

6. Window selection: Fused quartz, infrared silicon material, sapphire, zinc selenide, zinc sulfide, cadmium, hoofide, germanium, silicon, cadmium fluoride, mylar, kapton, wrinkle, etc., the size can be customized.

7. Integrated configuration: ①A set of vacuum cover; ②A temperature sensor and a temperature-controlled heater; ③A gold-plated oxygen-free copper sample holder; ④A vacuum suction port KF25; ⑤A release valve KF16; ⑥A 8pin Electrical vacuum connector, a temperature sensor and heater share a 6-core connector; ⑦Supporting compressor, cold head drive line, high-pressure nitrogen pipe and Toolkit; ⑧A set of standard cold head placement brackets.

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 The gas expands and is cooled in the cold head, and the expanded low-pressure helium returns to the compressor to repeat the cycle.

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Dexinmag® • 2026

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