Introduction to the main applications of thermal helium mass flow meters
Release time：
13 Oct,2022
Summary
Thermal helium mass flow meters directly measure the mass flow rate of the medium passing through the flow meter, as well as the density and indirectly the temperature of the medium. Because the transmitter is an intelligent instrument with a single-chip microcomputer as its core, it can derive more than a dozen parameters from the above three basic quantities for user use. Thermal helium mass flow meters are a new generation of flow meters with flexible configuration, powerful functions, and high cost performance. Main applications include:
Mainly used to measure the mass flow rate, total quantity, and density of the medium. It can also measure volumetric flow rate and total quantity, medium temperature, water content, alcohol content, concentration of two uniformly mixed liquids, and raw material ratios in processes.
It is mainly used in the petroleum industry, such as crude oil production, water content, single-well production, crude oil transportation; chemical, food, and pharmaceutical manufacturing industries, such as drug liquid production; papermaking, such as pulp; textile printing and dyeing; energy transmission, such as liquefied gas; environmental protection, such as wastewater treatment; and measurement of slurry density during desulfurization.
Thermal helium mass flow meters play a very effective role in various aspects such as material batching and batch metering, material flow measurement and control, fast and variable density measurement, and product quality monitoring.
With the improvement of automation level, many production processes have put forward new requirements for flow measurement. Chemical reactions are controlled by the mass (rather than volume) of raw materials. The heating and cooling effects of steam and air flows are also proportional to the mass flow rate. Strict control, accurate cost accounting, and fuel control for aircraft and missiles also require accurate data. Therefore, thermal helium mass flow meters are important instruments.
Because thermal helium mass flow meters can directly measure fluid beads, they have the advantages of high measurement accuracy, wide applicability, low installation requirements, reliable instrument operation, and low maintenance rate. They have been widely used in flow measurement in the petroleum, chemical, metallurgical, thermal power, power, and food industries.
Advantages of Thermal Helium Mass Flow Meters
1. Control is not inaccurate due to fluctuations in temperature or pressure
For most flow measurement and control systems, it is difficult to avoid pressure fluctuations and changes in ambient and medium temperature. For ordinary flow meters, pressure and temperature fluctuations will cause large errors, which can be negligible for thermal helium mass flow meters.
2. Automated measurement and control
The output flow value is a standard electrical signal. It is easy to achieve digital display of flow rate, cumulative flow rate, automatic data recording, and computer management. For the controller, it can also achieve automatic control of the flow rate.
3. Accurately and quantitatively control the flow rate
Thermal helium mass flow meters can accurately control the given amount of gas, which is particularly useful for flow control in many processes and proportional control of different gases.
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