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How to choose a mass flow meter? - Focus on microfluidic control technology

When testing fluid quality, some precision parts are used. The mass flow meter is the volume and flow of the test fluid, but the fluid data tested is also affected by the surrounding environment, such as temperature, pressure and time, due to quality. The measurement accuracy of the flowmeter is relatively accurate, so it has been favored by many users. Then, when the enterprise purchases the mass flowmeter, what should be paid attention to? The Xiaobian will tell the friends, first of all, the mass flowmeter. The classification of the use, because there are a variety of mass flowmeter equipment on the market, so the flow meter purchase brings some difficulties, such as direct, and indirect measurement equipment, no matter which form, the enterprise still needs According to the actual operating conditions, and then the price of the mass flow meter, this is basically a problem that all purchasing personnel pay more attention to. The price is not the reason for us to choose the mass flow meter, but not because of the price of the mass flow meter. Low choice, this is absolutely impossible, and finally Xiaobian reminds everyone, when buying mass flowmeter, don't forget to sign the flow machine. Buy the contract, indicating the price, type and other information on the contract.
 A flow measuring instrument that measures mass flow in a pipe. Under the condition that the measured fluid is in a large change of parameters such as pressure and temperature, if only the volume flow rate is measured, a large measurement error will be caused by the change of the fluid density. In volumetric and differential pressure flow meters, the density of the fluid being measured may vary by 30%, which can cause 30 to 40% error in flow. As the level of automation increases, many production processes place new demands on flow measurement. The chemical reaction process is controlled by the quality of the feedstock, not the volume. The heating and cooling effects of the vapor and air streams are also proportional to the mass flow. Strict control of product quality, accurate costing, and fuel quantity control for aircraft and missiles also require accurate mass flow measurements. Therefore, the mass flow meter is an important flow measuring instrument.
Mass flow meters can be divided into two categories: one is direct, that is, direct output mass flow; the other is indirect or derivable, such as applying ultrasonic flowmeter and density meter combination, multiplying their outputs by The mass flow is obtained.

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