TF100 thermal type gas mass flowmeter scale application in automobile exhaust

Abstract: the thermal type gas mass flowmeter TF100 scale application in the automobile exhaust information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. 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 countries. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a thermal type gas mass flowmeter TF100 scale application in the automobile exhaust article details. 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 TF100E thermal mass flowmeter is introduced. The introduction of 2, TF100 thermal mass flowmeter TF100E hot type gas flowmeter is SAILSORS ( China) A special measuring instrument for vehicle exhaust measuring company. SAILSORS company in gas quality measurement for nearly 20 years of successful experience, SAILSORS ( 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. SAILSORS ( China) TF100E products of the company is specialized in automotive exhaust products, after using this product effect is more ideal, to achieve our design precision. （ Figure 1: the actual product) Features: 1, sheath maerial have scale, convenient installation; 2, separation design, 50 meters) , suitable for high temperature applications. 3, stable and reliable, high precision; High temperature, high humidity, gas places suitable for application 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 = AB ( 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. 08 m/s, and has good linearity; The velocity response is fast, zui xiaoke 250 ms. Range than wide, is generally greater than 100:1, but has its drawbacks as well as the principle, more than 90 m/s range period of poor sensitivity, it also depends on the craft level sensor. 3 comprehensive parameter test system solution to the car, automobile 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. TF100E thermal type gas mass flowmeter actual test curve as shown in figure 1 series. 4, last word SAILSORS company TF100E thermal gas mass flow meter with high reliability and repeatability, and the scene of free maintenance, many advantages to make the product in vehicle exhaust measuring system plays the role of the increasingly obvious.

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