Measuring transducer for fuel permittivity of aeroplane fuel tank and measuring instrument

A technology for measuring sensors and dielectric constants, applied in measuring devices, instruments, scientific instruments, etc., can solve problems such as low precision, heavy weight, and large volume of measuring sensors, and achieve stable and reliable performance, light weight, and high degree of integration Effect

Inactive Publication Date: 2007-09-12
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Therefore, when used to measure the fuel capacity of tank trucks, oil transport ships, and the amount of fuel in aircraft fue...

Method used

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  • Measuring transducer for fuel permittivity of aeroplane fuel tank and measuring instrument
  • Measuring transducer for fuel permittivity of aeroplane fuel tank and measuring instrument
  • Measuring transducer for fuel permittivity of aeroplane fuel tank and measuring instrument

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Embodiment Construction

[0013] The present invention is further described below in conjunction with accompanying drawing:

[0014] The fuel dielectric constant measuring sensor and its measuring instrument adopted in the invention overcome the shortcomings of the existing metal medium measuring sensors. The copper-clad glass fiber plate or the carbon fiber composite electrode plate used in the fuel dielectric constant measuring sensor of the present invention is a composite material (composite materials; composite). The composite material is a new type of material manufactured by two or more materials through a certain composite process. Its advantages are strong bearing capacity, high rigidity, and small density, which is about 60% to 40% of aluminum. Good lubricity, good electrical conductivity, simple component manufacturing process, good molding process, convenient material acquisition and low price.

[0015] The composite plate electrode 5 in the fuel dielectric constant measurement sensor sho...

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Abstract

This invention relates to a kind of airplane tank oil-burning dielectric constant measuring sensor and its measuring apparatus. The sensor include pedestal; pedestal set up mounting screw; mounting screw set up wiring card; wiring card fix cable; four corner of pedestal set up fixed bolt; fixed bolt dead joint composite plate pole, composite plate pole are equidistance spaced by insulating washer that set on fixed bolt; composite plate pole set up cable lug, connect with cable; Centre of pedestal set up clinch bolt, to fix protective cup out of composite plate pole. It also includes measuring apparatus of sensor, and frequency generator connects with sensor. Output of frequency generator connects with capacitance measurement transfer circuit; temperature measurement, compensation circuit and capacitancemeasurement transfer circuit shunting connect to data acquisition and handling circuit of singlechip. Data acquisition and handling circuit of singlechip connect with display.

Description

technical field [0001] The invention relates to a sensor for measuring the dielectric constant of fuel oil in an aircraft fuel tank and a measuring instrument thereof, belonging to the technical field of measuring sensors and instruments. Background technique [0002] The dielectric constant of the fuel to be measured must be measured when using capacitive sensors to measure the fuel load of tank trucks, oil tankers, and aircraft fuel tanks. The current capacitive fuel medium measurement sensor is made of metal tube electrodes, and its density is greater than 2.7Kg / m 3 . In order to ensure stability and reliability in dynamic applications, the overall additional support structure is required to have sufficient weight in order to meet the strength and rigidity requirements of the sensor's stable application. Therefore, when used to measure the fuel load of tank trucks and oil ships and the fuel volume in aircraft fuel tanks, the existing metal-type capacitive fuel medium me...

Claims

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Application Information

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IPC IPC(8): G01N27/00G01N33/28
Inventor 樊玉铭王芸
Owner TIANJIN UNIV
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