Two-stage pulse tube cryocooler

RP-062B (0.5 W at 4.2 K) and RP-082B (1.0 W at 4.2 K)

Sumitomo Heavy Industries has expanded its product line yet again with the addition of a two-stage pulse tube cooler. With a base temperature of below 3.0 K, this new product extends the range of possible applications for Sumitomo closed-cycle refrigerators to include low-temperature, low-vibration applications. The pulse tube cooler has no internal moving parts; therefore, it has inherently low vibration levels.

Standard configuration

Characteristics:

Refrigeration capacity: 0.5 W at 4.2 K (RP-062B); 1.0 W at 4.2 K (RP-082B)
Orientation: vertical only
Push-button operation

Applications:

Laboratory cryostats
Cryogenic property measurements
Optical studies
Magnetic studies
Low-vibration

SRP-062B Two-stage Pulse Tube Cryocooler

Two-stage pulse tube cryocooler specifications

	RP-062B	RP-082B
Refrigeration cycle	Pulse tube (2-stage)	Pulse tube (2-stage)
Refrigeration capacity (vertical position)	1st stage: 30 W at 65 K (50/60 Hz) 2nd stage: 0.5 W at 4.2 K (50/60 Hz)	1st stage: 40 W at 45 K (50/60 Hz) 2nd stage: 1.0 W at 4.2 K (50/60 Hz)
Orientation	Vertical only	Vertical only
Lowest temperature	<3.0 K	<3.0 K
Vibration level	±4 µm at 2nd stage flange	1st stage: ±7 µm; 2nd stage: ±9 µm
Weight	23.2 kg	26 kg
Cold head dimensions (mm)—approximate	336 W × 190 L × 604 H	190 W × 347 L × 581 H
Cooldown time (to 4.2 K)	<100/90 min (50/60 Hz)	<80 min (50/60 Hz)
Maintenance	Every 20,000 h	Every 20,000 h
Compatible compressor unit model	F-50	F-70
Flexline length	20 m*	20 m*
Flexline weight	7.5 kg per line	7.5 kg per line
*Buffer tanks + 6 m lines may optionally be substituted for the 20 m long lines. 6 m lines weigh 5 kg per line.

Specifications subject to change without notice.

Download the Sumitomo's SRP-062B Pulse Tube Datasheet