控制低温液体液位的简单装置Ｐ．Ｒｏｔｈ等目前，已采用电容、电子和机械这几种技术来确定和控制杜瓦瓶中低温液体的液位。为了将位保持在所设置的高度，这些传感器必须与将液体传输到杜瓦瓶中的电子控制电路相连接。也需要蒸气压控制器及带有长棒或双金属片的浮于。这种... Simple device P for controlling the liquid level at low temperature. Roth et al. At present, several techniques of capacitance, electronics, and mechanics have been used to determine and control the level of cryogenic liquid in Dewar vials. In order to keep the bits at the set height, these sensors must be connected to the electronic control circuit that carries the liquid to the Dewar. Vapor pressure controllers are also required and floating with long rods or bimetallic plates. This ...