Level measurement can be tricky, especially when the fluid being measured has changing density and specific gravity. Emerson’s Cathy Ershen alerted me to a paper she, Emerson’s Pat Carroll and Calpine’s Anthony Derenia had published at the Geothermal Library. The paper, Calpine Geysers’ Units 18 and 20’s Stretford System Froth and Balance Tank Level Measurement […]