Calibration Terminology
Below is the definition of each term used within the tank calibration page.
Actual: Veritable Calibration.
Theoretical: Hypothetical Calibration.
Reference Point: Fixed point of mark at or near the top of the tank, the highest point of the tank or otherwise noted on the calibration chart.
Strike Point: Fixed point of mark at or near the top of the tank, the highest point of the tank or otherwise noted on the calibration chart.
Reference Depth: Distance from the reference point to the bottom of the tank and noted on some calibration charts.
Gaging Height: Distance from the reference point to the bottom of the tank and noted on some calibration charts.
Gauge Height: Distance from the reference point to the bottom of the tank and noted on some calibration charts.
Ullage: Distance from the reference point to the surface of the liquid in a tank.
Outage: Distance from the reference point to the surface of the liquid in a tank.
Inage: Depth of liquid in a tank measured from the surface of the liquid to the tank bottom.
Shell Full: Capacity designates that a tank is filled to it's shell capacity.
Nominal Capacity: 97% of shell full capacity.