A water-level sensor using a capacitance to frequency converter
- 1 September 1983
- journal article
- Published by IOP Publishing in Journal of Physics E: Scientific Instruments
- Vol. 16 (9) , 827-828
- https://doi.org/10.1088/0022-3735/16/9/003
Abstract
A capacitive water-level sensor using PTFE-insulated wire and a capacitance to frequency converter is described. Construction is simple, yet overall linearity is 0.1%. Temperature drift of the sensor is -0.05%K-1 and that of the converter is -1. Long-term stability of the sensor appears excellent. The converter draws only 150 mu A from a 5 V supply and is insensitive to supply voltage variations.Keywords
This publication has 1 reference indexed in Scilit:
- A simple, accurate voltage to frequency converterJournal of Physics E: Scientific Instruments, 1974