Product Introduction

This series of products is a specialized refrigeration equipment developed based on the requirements for low-temperature devices for impact specimens in GB/T229-2007 "Charpy notch impact test method for metals", fully meeting the temperature control indicators specified in GB229-2007.
This equipment uses electromagnetic control valves and high-precision intelligent instruments to control the flow of liquid nitrogen. It utilizes the principle of thermal equilibrium and cyclic stirring to achieve automatic uniform cooling and constant temperature of the sample. This equipment is easy to operate and has high work efficiency, making it an ideal sample cooling device for ultra-low temperature impact testing of materials.

Product Technical Parameters:
Product Model	DWC-196
temperature range	＋30℃～-196℃
Constant temperature accuracy	<±2℃
Digital temperature display	Resolution 0.5 ℃
Digital timer	1 point to 9999 points, resolution 1 point
Cooling rate	+30 ℃~-196 ℃/approximately 8 ℃/min
Effective working space of refrigeration tank	260×160×120mm
Number of samples arranged in the refrigeration tank	60 standard samples (10 × 10 × 55mm)
cooling medium	liquid nitrogen
Capacity of liquid nitrogen tank	50L
Mixing motor power	23W