Closed Tank Fill Level Sensor

摘要

A fill level sensor and method are disclosed. The fill level sensor can take a pressure reading beneath a fluid level inside a closed tank. The sensor can also take a pressure reading above the fluid level or otherwise take the vapor pressure above the fluid into account. The measurements can be used to calculate the fluid level inside the tank. Also disclosed is a system for users to track a plurality of tanks and maintain records of fluid level or pressure within the tanks.

主权项

1. A tank fill level sensor comprising:
a pressure sensor located near the bottom of a tank and comprising a first connection to the outside atmosphere; a calibration sensor located near the top of the tank and comprising a second connection to the outside atmosphere; and a processor connected to the pressure sensor and the calibration sensor and operable to obtain a pressure level from each sensor and thereby calculate a fill level within the tank.