This article presents a users guide to level-measurement technology for the water and wastewater treatment industry, whether that may be the instrumentation for open channel flow or level measurement.

In Gangster movies of yesteryears, when the police were asking informants about information, they would ask this question, “Is that information on the level?” What they are asking is whether the ...

In the 1950s, temperature-equalizing columns were commonly used in steam drum differential pressure–based devices for measuring water level. However, these columns are problematic because a portion of ...