TY - JOUR AU - Ross, P J AB - 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 <0.01%K-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. TI - A water-level sensor using a capacitance to frequency converter JF - Journal of Physics E: Scientific Instruments DO - 10.1088/0022-3735/16/9/003 DA - 1983-09-01 UR - https://www.deepdyve.com/lp/iop-publishing/a-water-level-sensor-using-a-capacitance-to-frequency-converter-MVS4e19e5n SP - 827 VL - 16 IS - 9 DP - DeepDyve ER -