Liquid volume monitor for pressurized tanks

An apparatus for measuring the volume of liquid in a tank having a top port, comprising:

• (a) a riser pipe secured in the port and extending upwardly therefrom;
• (b) a flange mounted on the riser pipe;
• (c) a flange cover secured to the flange;
• (d) a hanger bracket carried by the flange cover;
• (d) a load cell suspended from the hanger bracket;
• (e) a hollow liquid displacement probe suspended from the load cell, and extending to a lower end adjacent to, but clear from, the tank bottom;
• and
• (f) a spaced array of temperature sensors extending downwardly through the hollow open center of the displacement probe.

A device for measuring the liquid volume in a tank comprising:

• (a) a load cell positioned adjacent a port in the top wall of the tank;
• (b) a displacement probe supported by the load cell, and extending down into the tank, the displacement probe having a lower end near the tank bottom, whereby the load measured by the load cell gives the apparent weight of the probe when immersed in the liquid contents of the tank;
• (c) a suspension mechanism mounted at the tank port for supporting the load cell and the probe, including universal joint means to orient the load cell horizontally without regard to the orientation of the tank and the tank port;
• and
• (d) means mounted adjacent said tank port for measuring the temperature of the liquid contents of the tank.