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An inexpensive thermistor flowmeter for aquatic biology 1
Author(s) -
LaBarbera Michael,
Vogel Steven
Publication year - 1976
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1976.21.5.0750
Subject(s) - thermistor , flow measurement , current meter , metre , underwater , acoustics , environmental science , electrical engineering , materials science , physics , engineering , geology , mechanics , oceanography , astronomy , thermodynamics
A new thermistor flowmeter can measure current speeds from 0.2 to 50 cm s ‒1 with a spatial resolution of 0.1 cm and a response time of 200 ms. The output of the meter approximates a logarithmic function of the ambient water velocity. The flowmeter itself has a low power consumption and the output can be stored on magnetic tape using a battery‐powered cassette recorder, making possible a continuously recording portable or self‐contained underwater unit.