Time domain reflectometry liquid level sensors

The technique of time domain reflectometry (TDR) has been used by electrical engineers for testing the characteristics of transmission lines and diagnosing faults. Although TDR instruments for testing cable are commonly used today, few instrumentation engineers are aware that the technique can measu...

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Published in:IEEE instrumentation & measurement magazine 2001-12, Vol.4 (4), p.40-44
Main Author: Nemarich, C.P.
Format: Magazinearticle
Language:English
Subjects:
Capacitance
Circuits
Coaxial cables
Coaxial components
Exact sciences and technology
Fluid dynamics
Fluid flow
Fluids
General equipment and techniques
Impedance
Inductance
Instrumentation
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Level control
Liquid levels
Optical instruments, equipment and techniques
Physics
Reflection
Reflectometry
Refractometers and reflectometers
Sensors
Sensors (chemical, optical, electrical, movement, gas, etc.)
remote sensing
Time domain
Voltage
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description The technique of time domain reflectometry (TDR) has been used by electrical engineers for testing the characteristics of transmission lines and diagnosing faults. Although TDR instruments for testing cable are commonly used today, few instrumentation engineers are aware that the technique can measure liquid levels and fluid interfaces. In this article, I review the theory and principles of time domain reflectometry and present the application of this technology as a liquid level sensor.
doi_str_mv 10.1109/5289.975464
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1941-0123
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source IEEE Electronic Library (IEL) Journals
subjects Capacitance
Circuits
Coaxial cables
Coaxial components
Exact sciences and technology
Fluid dynamics
Fluid flow
Fluids
General equipment and techniques
Impedance
Inductance
Instrumentation
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Level control
Liquid levels
Optical instruments, equipment and techniques
Physics
Reflection
Reflectometry
Refractometers and reflectometers
Sensors
Sensors (chemical, optical, electrical, movement, gas, etc.)
remote sensing
Time domain
Voltage
title Time domain reflectometry liquid level sensors
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