Ultrasonic bimetallic thermometer combined with doppler method

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it is well known that the current industrial flow measurement generally there is a big pipe diameter, flow measurement difficult problem, this is because the general bimetallic thermometer with the increase of measuring diameter leads to manufacturing and transportation difficulties, can raise cost, loss increase, installation of these shortcomings, not only ultrasonic bimetallic thermometer can be avoided.

ultrasonic bimetallic thermometer electronic circuit including transmitting and receiving, signal processing and display circuit. Measured the instantaneous flow and cumulative flow value with digital or analog display. Ultrasonic flow measurement accuracy of the measuring instrument is almost not affected by measurement of body temperature, the effects of parameters such as pressure, viscosity, density, and can be made into non-contact and portable measuring instrument, it can solve the other type is difficult to measure by instrument of strong corrosion resistance, electrical conductivity, radioactive and flammable and explosive medium flow measurement problem. In addition, in view of the characteristics of non-contact measurement, combined with reasonable electronic circuit, an instrument can adapt to a variety of pipe diameter and flow range measurement. Ultrasonic bimetallic thermometer adaptability and other instrument incomparable. Ultrasonic bimetallic thermometer has some of these advantages so it is more and more attention to the product seriation, generalization and development, has now made from different channels of standard type, high temperature, explosion-proof, wet type instrument so as to adapt to different medium, different occasions and different pipe flow measurement.

in general due to industrial production jobs often cannot maintain a constant temperature, so the more the frequency difference method is adopted in time difference method. Doppler method suitable for measuring two phase flow, can avoid the conventional caused by suspended solids or bubble blockage, abrasion, adhesion and cannot run ills, thus developing rapidly. With the development of the industrial development and energy conservation, kerosene, coal, cement and mixed fuel delivery and application and development of energy saving methods, such as fuel oil and water as auxiliary combustion, have multiple doppler ultrasound bimetallic thermometer application open up broad prospects.