COOLER FOR ULTRA-SENSITIVITY ANALYZER

摘要

PROBLEM TO BE SOLVED: To obtain stable measured results by preventing the transfer of electric noise to a cold generating part. SOLUTION: When an ultra-sensitivity analyzer is cooled by a pulse pipe refrigerating machine 6, electric insulating members are provided in a tube joint 39, a device main body or a gas conduit 27 which form a gas flow passage from a gas switching block 10 to a cold generating part 5 in the pulse pipe refrigerating machine 6. Thus, very small electric noise leaking from a compressor unit 9 or the gas switching block 10 is cut.