| 摘要 |
Subject disclosure relates to novel and improved apparatus for continuously indicating the liquid level of a material in a heated pressurized vessel. The improved apparatus includes a tube, a portion of which passes through the liquid phase of the material, a pressurized fluid source connected to one end of the tube and means including a fluidic amplifier and a pressure drop transmitter connected to the other end of the tube for converting variations in pressure in the tube into a measure of liquid level in the vessel. A second tube, a portion of which passes through the vapor phase of the material is also connected between the pressurized fluid source and the fluidic amplifier and pressure drop transmitter to null liquid level measurement errors produced by changes in pressure of the material in the vessel.
|
