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Articles

1978: Vol. LV, No. 2

Bernoulli Effects on Pressure-Activated Water Level Gauges

Submitted
August 7, 2015
Published
2015-07-09

Abstract

New developments in instrumentation engineering have led to the introduction of pressure-activated, submerged water level gauges such as the Aanderaa. These gauges may be placed in locations in which the velocity in the water column above the- gauge and the variations in density cannot be neglected. We show that significant errors can arise if the traditional hydrostatic assumption is made. The correct formulae are given for the conversion of pressure to water level, and the limits of applicability of these formulae are discussed. Recommendations are given for the elimination of Bernoulli effects from water level records.