NASA NTRS · 19730007368
A urine volume measurement system
Abstract
An improved urine volume measurement system for use in the unusual environment of manned space flight is reported. The system utilizes a low time-constant thermal flowmeter. The time integral of the transient response of the flowmeter gives the urine volume during a void as it occurs. In addition, the two phase flows through the flowmeter present no problem. Developments of the thermal flowmeter and a verification of the predicted performance characteristics are summarized.
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Poppendiek, H. F., Mouritzen, G., Sabin, C. M.. 1972-12-01. A urine volume measurement system. https://ntrs.nasa.gov/citations/19730007368
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