A PLANAR CAPACITIVE PRECISION GAUGE FOR LIQUID-LEVEL AND LEAKAGE DETECTION

Authors
TOTH FN MEIJER GCM VANDERLEE M
Citation
Fn. Toth et al., A PLANAR CAPACITIVE PRECISION GAUGE FOR LIQUID-LEVEL AND LEAKAGE DETECTION, IEEE transactions on instrumentation and measurement, 46(2), 1997, pp. 644-646
Citations number
6
Categorie Soggetti
Engineering, Eletrical & Electronic","Instument & Instrumentation
Journal title
IEEE transactions on instrumentation and measurement → ACNP
ISSN journal
00189456
Volume
46
Issue
2
Year of publication
1997
Pages
644 - 646
Database
ISI
SICI code
0018-9456(1997)46:2<644:APCPGF>2.0.ZU;2-P
Abstract
A new capacitive precision liquid-level gauge has been developed, The sensor consists of a low-cost planar electrode structure, a capacitanc e-controlled oscillator and a microcontroller, The device is able to m easure absolute levels of conducting and nonconducting liquids with a 1 mm uncertainty over a 4 m range, The system has a high resolution of 0.1 mm at short measuring times of only 0.2 s, Slow level movements o f 0.02 mm/h can be detected within 18 min.