LIQUID VISCOSITY SENSOR

PURPOSE: To obtain a small-scaled lightweight liquid viscosity sensor with good measuring accuracy usable in a system (inline) by using an impedance bridge circuit making a circuit element of quartz oscillators and capacity elements. CONSTITUTION: The liquid viscosity sensor is constituted by an imp...

Full description

Saved in:
Bibliographic Details
Main Authors SUZUKI HAJIME, YAMAGUCHI MASATSUNE, HASHIMOTO KIYONARI
Format Patent
LanguageEnglish
Published 05.11.1996
Edition6
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
Online AccessGet full text

Cover

More Information
Summary:PURPOSE: To obtain a small-scaled lightweight liquid viscosity sensor with good measuring accuracy usable in a system (inline) by using an impedance bridge circuit making a circuit element of quartz oscillators and capacity elements. CONSTITUTION: The liquid viscosity sensor is constituted by an impedance bridge circuit making a circuit element of quartz oscillators for liquid viscosity measuring X1, X2 and capacity elements (capacitor) C1, C2. And a coefficient of viscosity (viscosity) of liquid specimen is measured by measuring the Q values of the quartz oscillators X1, X2 by the impedance bridge circuit. In other words, when alternating voltage of a few volts is applied between contact points 0-1 of the impedance bridge circuit, alternating voltage proportional to the Q values of the quartz oscillators X1, X2 produces at a resonance point of the bridge circuit between contact points 2-3. Direct voltage proportional to the Q value can be obtained by detecting and rectifying it. In addition, when the circuit elements are integrated on the same substrate, scattering of each circuit element is lessened.
Bibliography:Application Number: JP19950117633