77K Coldhead Nitrogen Liquefaction Cryocooler KDE400SA (77K)

Model: KDE400SA

Item specifics

Application: Nitrogen Liquefaction

Cooling Capacity (50Hz): 54W 40K

Lowest Temperature: <30K

Power Consumption (50Hz): <7.2kW

Cooling Type: Water Cold

Cool down Time (1st stage): <40K (30min)

Weight: 16.8 kg

Review

Description

The Gifford-McMahon (GM) cryocooler was invented by William Gifford and Howard McMahon. Its refrigeration principle is based on the adiabatic expansion of helium gas. The main components of a GM cryocooler include a cold head, helium transfer hoses, and a helium compressor.

Owing to its high reliability, long service life, and ease of operation and control, the GM cryocooler has become the most widely industrialized cryogenic refrigeration technology. It is extensively used in applications such as superconducting equipment, medical imaging systems, semiconductor manufacturing, and scientific research.

For many years, GM cryocoolers were entirely dependent on technology and products from USA and Japan. This Chinese originated GM cryocooler is gaining widespread acceptance worldwide and becoming an attractive alternative for cryogenic refrigeration solution due to its high reliability, competitive pricing, and rapid service response.

Specifications

Model No.	KDE400SA (77K)
Brand	Pride
Lowest Temperature	< 30K
Cooling Capacity (50Hz)	54W @ 40K
Cool down Time	30min (< 40K)
Weight	Coldhead	Compressor
	16.8 kg	118 kg
Compatible Helium Compressor	KDC6000V
Power Consumption (50Hz)	Steady	Cooldown
	6.5kW	7.2kW
Cooling Type	Water-cold
Cooling Water Requirement	> 7 L/min
Standard Flexline	20A×20m
Maintenance Interval	Coldhead
	18 month
Warranty Period	1 Year

Working & Storage Conditions

Item	Operating	Storage
Ambient Temperature	4~40 ℃	-20~65 ℃
Relative Humidity	30%~70%	0%~90% (Requiring No-condensing)
Ambient atmospheric pressure	70kPa~110kPa	20kPa~110kPa