Measurement of Lactic Acid by Mass Flow Meter | Principle and Formula of Density Measurement by Mass Flow Meter

Flow Meters – Silver Automation Instruments

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1. What is the ratio of K coefficient in a mass flowmeter?

The K coefficient in a mass flowmeter is the ratio between the number of pulses and the flow unit. Specifically: Definition: The K coefficient in a mass flowmeter represents the flow unit corresponding to a certain number of pulses, usually expressed in terms of how many pulses are equivalent to 1kg/min. Function: The K coefficient is an important parameter for flow measurement and high impulse calculation in flow meters. It can convert the number of pulses detected by the flow meter into the actual flow value. Application: In the measurement process of a mass flowmeter, the actual mass flow rate of the fluid can be calculated by detecting the number of pulses generated when the fluid flows through the sensor and combining it with the K coefficient. Therefore, the K coefficient of a mass flow meter is the ratio between the number of pulses and the single reading position of the mass flow meter.

2. What is a mass flow meter?

Mass flow rate, as an important parameter in measurement, specifically refers to the flow rate of a fluid measured by mass rather than volume.

. It can be defined using the formula qm=m/t=ρ× u × A, where qm represents mass flow rate in kg/s; M is the mass of the fluid per unit time, measured in kg; ρ is the density of the fluid, measured in kg/m ³; T is time, measured in seconds; u is the average flow velocity in the pipeline, measured in meters per second; A is the cross-sectional area of the pipeline, measured in square meters. Mass flow rate is essentially the effective cross-sectional mass of fluid passing through a pipeline or channel per unit time, measured in kg/h or kg/s, and is related to volumetric flow r Measurement of Lactic Acid by Mass Flow Meter

Measurement of Lactic Acid by Mass Flow Meter

ate (volume/time), which is equal to the product of volumetric flow rate and fluid density. As a direct measurement tool, the advantage of a mass flowmeter is that it does not require additional compensation for density changes, and can directly measure both mass flow rate and volumetric flow rate. This characteristic makes it particularly practical when dealing with gases, unaffected by temperature and pressure. Quality flow meters ensure the accuracy of measurement results by detecting density in real-time, without being affected by changes in material status. The Sichuan Laifeng fluid gas mass flowmeter consists of a series of components, including a mass bright silver flow sensor, thermal components, mass flow controller regulating valve, and amplification circuit. Its working principle is to use the heat transfer of fluid flowing inside the capillary tube to change the temperature distribution, thereby measuring the mass flow rate of gas through calorimetry. By amplifying the sensor signal and comparing it with the set voltage, the valve is adjusted to maintain the actual flow rate consistent with the set value, achieving closed-loop control.

3. Types and principles of mass flow meters

Types and principles of mass flow meters Mass flow meters are instruments that measure flow based on the mass of fluids, widely used in industrial fields such as petrochemicals, pharmaceuticals, food processing, aerospace, etc.

. There are various types of them, and the working principles of each type are also different. Here are several common mass flow meters and their principles:

1. Thermal mass flow meter principle: Thermal mass flow meters use the heat of the measured fluid to determine its mass flow rate.

Measurement of Lactic Acid by Mass Flow Meter | Principle and Formula of Density Measurement by Mass Flow Meter

1. What is the ratio of K coefficient in a mass flowmeter?

2. What is a mass flow meter?

3. Types and principles of mass flow meters

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