He refrigerator

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Introduction

The He refrigerator, or liquefied, Model 1630S from the Cryogenic Plants and Services, Linde BOC Procee Plants LLC. This model operates on an analog system and has been upgraded so that a computer can control it.

The model is used to produce liquid He as a close cycle 4.6 K refrigirator.

Operation principle

Computer control

Upgrade of the computer control

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