LIQUID NITROGEN LEVEL CONTROL SYSTEM

摘要

A liquid container arrangement for controlling the level of liquid in a container is disclosed. The liquid container arrangement includes a first compartment open to atmosphere and to which evaporative loss of liquid occurs and a second compartment that is closed to atmosphere and in liquid communication with the first compartment. The liquid container arrangement also includes adjustment means for adjusting the level of the liquid in the second compartment to vary the level of the liquid in the first compartment.