4K closed-loop liquid nitrogen laboratory low-temperature thermostat-Fornitore globale

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4K closed-loop liquid nitrogen laboratory low-temperature thermostat

The 4K closed-loop low-temperature thermostat provided by Jinzhengmao Technology Co., Ltd. is a variable temperature low-temperature platform based on

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4K closed-loop low-temperature thermostat

Jin Zhengmao4K closed-loop low-temperature thermostatCCS（Closed Cycle System）The refrigeration machine has been utilizedG-MThe thermodynamic cycle principle compresses and expands helium gas. The compressor provides the high-pressure helium gas required during the cycle, 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 cycles. The refrigeration unit includes two stages of cooling stages,The first stage cold stage is used to cool the anti thermal radiation screen around the sample, and the second stage cold stage is used to cool the sample.

Jin Zhengmao4K closed-loop low-temperature thermostat 4K provided by Jinzhengmao Technology Co., LtdClosed cycle low-temperature thermostats are produced by domestic and foreign companiesG-MA variable temperature and low temperature platform based on a refrigeration machine, used in conjunction with a temperature controller, can control the temperature of the sample throughout the entire working range. It is easy to operate and has low maintenance costs.

Scope of use:Mainly used for magnetic measurement, optical measurement, photoelectric reaction, light reflection, fluorescence, and magnetic resistance experiments in low temperature and vacuum environments.

advantage:

Compact structure, high cost-effectiveness, low temperature without refrigerant consumption, long maintenance cycle, strong scalability, and easy use;

The sample is in a high vacuum environment or atmosphere;

※Integrated optical windows with multiple optional window materials；

※Multiple gold-plated oxygen free copper sample holders can meet the measurement needs of different experimental requirements，Quick replacement of sample holder；

※Suitable for electrical, optical, and magnetic measurements in low-temperature environments；

※Silicon diode thermometer orCernoxthermometer(Used in strong magnetic fields)Installed on the cold finger；

※The compressor can choose between air cooling and water coolingLong maintenance cycle;

Multiple options can meet the measurement needs of different experiments.

in common use4KRefrigerator specifications and parameters（SHI）

in common use4KTechnical specifications and parameters of refrigeration head and compressor（SHI）
project	GMrefrigeration machine						Pulse tube cooler
Cold head model	RDK-101D	RDK-101DL	RDK-305D	RDK-205D	RDK-408D2	RDK-415D	RP-062B	RP-082B	RP-182B2S
Low temperatureas low as(Bare machine)	<3K	<3K	<3.5K	<3.5K	<3.5K	<3.5K	<3.0K	<3.0K	<2.8K
Cooling time	150min to 4K	150min to 4K	120min to 4K	90min to 4K	60min to 4K	60min to 4K	100min to 4K	80min to 4K	60min to 4K
Refrigeration capacity	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	0.5W@4.2K & 30W@65K	1W@4.2K & 40W@45K	1.5W@4.2K & 36W@48K
Cold head weight	7.2Kg	7.2Kg	16Kg	14Kg	18Kg	18.5Kg	23.2Kg	26Kg	28 Kg
compressor	CAN-11B/C		FA40H	CKW-21A	F50H	F50H	F50H	F70H	F-100
power consumption	1.2-1.3KW 1Phase			2.7-3.3KW 3Phase	6.5-7.2KW 3Phase	6.5-7.2KW 3Phase	6.5-7.2KW 3Phase	6.6-6.9KW 3Phase	11.8-13.7KW 3Phase
Cooling water inlet flow rate and temperature				7L/min（4-28℃）	7L/min（4-28℃）	7L/min（4-28℃）	7L/min（4-28℃）	6-9L/min（4-28℃）
size	461400450mm			461400450	591450588	591450588	591450588	532493443
Compressor weight	70Kg			70Kg	120Kg	120Kg	120Kg	100Kg
Maintenance Cycle	20 000h			20 000h	30 000h	30 000h	30 000h	30 000h	30 000h

Integrated specifications and parameters

in common use4KTechnical specifications and parameters of refrigeration head and compressor（SHI）

model

project

RDK-101D

RDK-101DL

RDK-305D

RDK-205D

RDK-408D2

RDK-415D

RP-062B

RP-082B

RP-182B2S

temperature range

4K-325K

Required vacuum degree

≤1Pa

Experimental type

electricity

optics

electricity

optics

electricity

optics

electricity

optics

electricity

optics

electricity

optics

electricity

optics

electricity

optics

Sample holder size

15*25mm

15*25mmCenter openingΦ10mmclear aperture

20*30mm

20*30mmCenter openingΦ10mmclear aperture

15*25mm

15*25mmCenter openingΦ10mmclear aperture

30*40mm

30*40mmCenter openingΦ20mmclear aperture

30*40mm

30*40mmCenter openingΦ20mmclear aperture

30*40mm

30*40mmCenter openingΦ20mmclear aperture

30*40mm

30*40mmCenter openingΦ20mmclear aperture

30*40mm

30*40mmCenter openingΦ20mmclear aperture

Vacuum hood size

Φ31.8mm

40*40mm

Φ41.8mm

50*50mm

Φ31.8mm

40*40mm

Φ45mm

50*50mm

Φ31.8mm

40*40mm

Φ31.8mm

40*40mm

Φ31.8

40*40mm

Φ31.8mm

40*40mm

Sample holder terminal

8individual

not have

8individual

not have

8individual

not have

8individual

not have

8individual

not have

8individual

not have

8individual

not have

8individual

not have

temperature sensor/heater

The standard configuration for temperature sensors is a silicon diode,When in a strong magnetic field, chooseCernoxTemperature sensor. The standard configuration of the heater is50W, can be upgraded to75W

OPTICAL WINDOW

not have

1-5individual

not have

1-5individual

not have

1-5individual

not have

1-5individual

not have

1-5individual

not have

1-5individual

not have

1-5individual

not have

1-5individual

Note:Optical sample holders can have light holes in the middle, and the size can be specified by the user.

in common use4KRefrigerator specifications and parameters（GC）Integrated specifications and parameters

in common use4KTechnical specifications and parameters of refrigeration head and compressor（GC）

project

GMrefrigeration machine

Cold head model

KDE418SA

KDE415SA

KDE412SA

KDE410SA

KDE401SA

Low temperatureas low as(Bare machine)

<3.5K

<2.5K

Cooling time

60min to4.2K

120min to4.2K

Refrigeration capacity

1.75W@4.2K

35W@50K

1.5W@4.2K

35W@50K

1.2W@4.2K

40W@45K

0.8W@4.2K

35W@50K

1.0W@4.2K

40W@45K

0.25W@4.2K

3W@45K

compressor

KDC6000V

KDC4000F

KDC6000V

KDC2000F

KDC2000VL

power consumption

6.5KW

3.5KW

Cooling method

water-cooling

forced air cooling

water-cooling

forced air cooling

water-cooling

Cooling water inlet flow rate and temperature

7-10L/min（28℃）

≥1800Nm³/h

7L/min（4-28℃）

≥1800Nm³/h

≥4L/min（4-28℃）

Cold head weight

18.9Kg

18.5Kg

8.9Kg

Compressor weight

118Kg

130Kg

118Kg

86Kg

106Kg

Cold head maintenance cycle

18Month

Compressor maintenance cycle

36Month

in common use4KRefrigeration head and compressor technologyintegrationSpecifications and parameters（GC）

model

project

KDE418SA

KDE415SA

KDE412SA

KDE410SA

KDE401SA

temperature range

4K-325K

Required vacuum degree

≤1Pa

Experimental type

electricity

optics

electricity

optics

electricity

optics

electricity

optics

electricity

optics

Sample holder size

30*40mm

30*40mmCenter openingΦ20mmclear aperture

30*40mm

30*40mmCenter openingΦ20mmclear aperture

25*30mm

25*30mmCenter openingΦ15

mmclear aperture

20*30mm

20*30mmCenter openingΦ10mmclear aperture

15*25mm

15*25mmCenter openingΦ10mmclear aperture

Vacuum hood size

Φ41.8mm

50*50mm

Φ41.8mm

50*50mm

Φ31.8mm

40*40mm

Φ41.8mm

50*50mm

Φ31.8mm

40*40mm

Sample holder terminal

8individual

not have

8individual

not have

8individual

not have

8individual

not have

8individual

temperature sensor/heater

OPTICAL WINDOW

not have

1-5individual

not have

1-5individual

not have

1-5individual

not have

1-5individual

not have

1-5individual

Note:Optical sample holders can have light holes in the middle, and the size can be specified by the user.

Sample holder options

model	Specifications and Parameters	describe	notes
T8015	15*25mm	Additional electrical sample holder, with upper and lower components8Root terminal post	1All standard equipment10KThe thermostat is equipped with a sample holder by default, and the size can be made according to the standard or designed according to the specific requirements of the user. If the design is complex, fees can be charged at the discretion of the user; 2Standard optical sample holder, comes with a sample press. There are holes on the tablet, and the diameter is the same as the size of the through-hole; 310KThe cooling power of the refrigeration machine varies slightly, and the size of the sample holder can be adjusted within a certain range according to the specific power;
T8020	20*30mm	Additional electrical sample holder, with upper and lower components8Root terminal post
T8030	30*35mm	Additional electrical sample holders on both sides8Root terminal post
T8040	40*45mm	Additional electrical sample holders on both sides8Root terminal post
T8115	15*25mm	Additional optical sample holder, with a middleΦ8The through-hole
T8120	20*30mm	Additional optical sample holder, with a middleΦ10The through-hole
T8130	30*35mm	Additional optical sample holder, with a middleΦ15The through-hole
T8140	40*45mm	Additional optical sample holder, with a middleΦ20The through-hole
T8205	Φ5mm	Powdered sample container, with one side of the container5mmwindow
T8210	Φ10mm	Powdered sample container, with one side of the container5mmwindow

Optical window options

Window panel model	Window panel specifications	describe	notes
W-20	Φ20*1.5mm	Extra quartz window	1The specifications of the windows are all based on the visible area, but the actual size is larger than the visible area; 2Window installation can be selectedORing compression or low-temperature epoxy resin bonding. If the vacuum hood size is small, try to use adhesive as much as possible
W-40	Φ40*2mm	Extra quartz window
K9-W20	Φ20*1.5mm	additionalK9window
K9-W20	Φ40*2mm	additionalK9window
F-W20	Φ20*1.5mm	Additional calcium fluoride window
F-W40	Φ40*2mm	Additional calcium fluoride window

Cable options

name	describe	notes
PTFE wire	Ordinary wire, large heat leakage, diameter0.1-0.3between	The cable does not require the use of a single type of ordinary PTFE wire. It is required to be made according to the requirements, and the wire should be used in conjunction with the corresponding connector
Low temperature coaxial line	Low signal interference and accurate measurement
Phosphor bronze twisted pair cable	Poor thermal conductivity, small heat leakage, diameter0.2mm（4Root)
Microwave semi-rigid cable	High frequency cables, used for high-frequency signals

Connector options

Electrical connector model	Specifications and parameters	describe
T91-8POrdinary glass sintering	8pin	Add a quick plug and unplug feature8POrdinary electrical connector
T91-12POrdinary glass sintering	12pin	Add a quick plug and unplug feature12POrdinary electrical connector
T91-SMA	0-18GHz	Equipped with flexible cables
T91-SMA	0-12.4GHz	Equipped with semi-rigid and semi flexible cables
T91-BNC	0-4GHz	Equipped with ordinary coaxial line
T91-TRX	Triple coaxial connector	Add a quick plug three coaxial connector
T91-S	Stainless steel junction box	Add a stainless steel junction box
T91-PTEF	PTFE wiring cover	Add a PTFE plate wiring cover on the stainless steel junction box

remarks:

1：All thermostats come with two connectors when they leave the factory, one for installing temperature sensors and heaters, and the other for preparing connectors for other performance measurements. When more testing lines are needed, installation holes need to be added or one or more connectors need to be installedBreakout Box.

2：In the table above, there areT91-SOption, this option's wiring board and housing form a grounding system as a whole, while the other option isT91-PTEFOption, this option uses PTFE board insulation connection between the shell and the installed joint, and the electrical performance of the shell and joint is independent of each other. Attention should be paid to this issue when selecting

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