Thermal mass flowmeter scale application in vehicle detection

Abstract: the thermal mass flowmeter scale application in vehicle detection information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Abstract: this paper introduces the TF100 thermal type gas mass flowmeter in the role and characteristics of auto detection, installation, application and other equipment and precautions of complete vehicle exhaust test system of scheme 1, the introduction with the car number increasing, car tail. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a thermal mass flowmeter scale application in the automobile exhaust test article details. TF100 thermal type gas mass flowmeter were introduced in this paper the role and characteristics of auto detection, installation, application and other equipment and precautions of complete vehicle exhaust test system of scheme 1, the introduction with the car number increasing, automobile exhaust pollution is increasingly exposed, all countries in the world have issued related standards, according to the specific situation in our country on this issue also presented the limit vehicle emissions laws and regulations. Both at home and abroad, car manufacturers have developed various car tail gas detection equipment. This equipment not only has the analysis the function of the automobile exhaust emissions is in line with the relevant national standard, but also have the function that analysis of automobile engine fault, also the important tool of the performance test for the car. Below is developed by Shanghai byd company with independent copyright of the automobile integrated parameters detection system, application of TF100 thermal mass flowmeter is introduced. The introduction of 2, TF100 thermal mass flowmeter TF100 thermal mass flowmeter is SAISORS ( China) A special measuring instrument for vehicle exhaust measuring company. SAISORS company in gas quality measurement, nearly 20 years successful experience, SAISORS ( China) Companies have successfully in domestic for nearly three years, in terms of gas measurement, has a wealth of experience. Our company in the application of the comprehensive parameter detection system project, successively adopted abroad some certain brands and domestic brands of thermal type gas mass flowmeter is due to the huge difference between actual measurement results and the theoretical data application effect is not ideal. SAISORS（ China) TF100 products of the company is specialized in automotive exhaust products, after using this product effect is more ideal, to achieve our design precision. Actual product pictures. Features: sheath maerial have scale, convenient installation; Split type design ( 50 meters) , suitable for high temperature applications. Stable and reliable, high precision; Suitable for application of the high temperature, high humidity and pollution gas places; Main principle: when the car in different speed of engine exhaust different, exhaust pressure, gas temperature, according to the car's engine performance can be calculated. According to the inserted into the pipe of the probe can be used to analyze gas car emissions of exhaust gas under different speed, thereby identifying vehicle emission is in accordance with the relevant industry standards. Thermal mass flowmeter for the important work, is responsible for the displacement, temperature, pressure measurement, the data is also an important parameter measurement of engine working ability, is also the important basis of car maintenance staff to maintain. As we all know, exhaust gas measurement is more complex, and its composition, displacement measurement of engine and the engine performance is critical, and thus to ensure the system accuracy of 3%, will have to ensure the accuracy of the system each function. Through the actual test, we achieve the design precision of the early we zui. 2. A thermal type gas mass flowmeter principle probe has two probes, one is the heated probe, it contains high precision PT20 resistance; Another is the benchmark probe, containing high precision PT1000 resistance. Heated probe measuring wind speed; Benchmark probe measuring the temperature of the wind speed. We know that the thermal mass flowmeter is based on the technology of thermal diffusion. Inserted into the fluid in the probe, due to the influence of the medium flow rate, heat loss by heat flow probe, so the heat loss and the relationship between the mass flow of fluid mathematical model to express the following available: P/delta T = (A + B Q） m— — — — — — — — — — — — （ 1) Among them: P consumed power, delta T said the difference in temperature between the two probes, mass flow rate Q, m said index coefficient, A, B is related with the physical properties of gas constant. From the formula ( 1) You can see the ratio of heating power and the temperature difference of probe is mass flow of the fluid. If we put the delta T stay the same, according to the consumed power and the quality of the fluid flow relations to measure the rate of flow of fluid, this way is called we & other; Constant temperature difference & throughout; Method, and its advantage is: at small flow rate is very sensitive, zui to 0. 5 m/s, and has good linearity; The velocity response is fast, zui xiaoke 250 ms.

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