In a recent post we discussed how temperature can introduce error to a hydrostatic level measurement. Specifically, when temperature changes, the density of the fluid being measured can also change, which means the level calculation being done by the instrument is being done with the wrong density value, creating an inefficiency and opening the door to a potential overfill. That’s a major problem, but what’s the solution? What is an operator to do when they know the density is constantly changing (either due to temperature or process conditions) and the level output is incorrect? That is our topic today.