Abstract: the design of intelligent open channel flow meter scale information produced by excellent flow meter, flow meter manufacturer to offer you the quotation.

Open channel flow meter is in the full tube measurement nature of free surface flow in open channel flow meters, are widely used in urban water supply channel, power plant cooling water diversion and drainage, sewage disposal flow and discharge of drainage, industrial and mining enterprises, wastewater discharge flow.

More flow meter manufacturers choose model price quote you are welcome to inquire, here is the design of intelligent open channel flow meter scale article details.

Open channel flow meter is in the full tube measurement nature of free surface flow in open channel flow meters, are widely used in urban water supply channel, power plant cooling water diversion and drainage, sewage disposal into and discharge channel, industrial and mining enterprises, wastewater discharge flow measurement.

Therefore, developing a low cost, high precision, convenient operation, simple structure of the open channel flow meter for rational utilization of water resources, sewage treatment has important practical significance.

Flow meter based on MCU C8051F060 as main control chip design in this paper, using its capture the characteristics of pulse width measurement, realize the velocity signal acquisition and processing.

System can measure the liquid level, flow velocity and flow rate at the same time, and the data on the LCD screen display;
Through the RS -
232 serial communication interface with PC;
External usb drive, to achieve mass type storage;
Accurate real-time clock display;
Nonvolatile data security storage, etc.

1 measurement principle of this design adopts the method of flow measurement for & other;
Velocity -
Throughout & calculation method of water level;
A local, measured flow channels (
Points, lines or small size)
Velocity, represents the average flow velocity;

Circulation area obtained by measuring water level again, and from the relations between local velocity and average velocity of the calculus to calculate the flow.

Velocity measurement is adopted propeller type velocity sensor, first of all port test section of the velocity sensor of propeller speed test circuit, signals from velocity sensor is by mechanical contact or contact a reed relay of open and close signal, the signal is sent to detect transform for signal conversion circuit, and after filtering, to shake the transformation to the pulse signal, into the MCU I/O port.

Within a certain range, speed and propeller velocity exist the following linear relationship: (
1)
Type: & upsilon;
For measuring point velocity;
N for the current meter propeller speed;
K for the current meter proportionality constant or hydraulic pitch;
C for current meter zui small induction velocity;
T used for measuring rotating weeks time.
N T propeller rotation weeks for a set period of time.

So, in a certain time, as long as measure the rotation of the propeller weeks, can find out the position of the propeller of the instantaneous velocity value.

Then, cross section of the test, the flow velocity and flow area integral at various points can be obtained by the traffic.

2 circuit design of the portable intelligent open channel flow meter based on MCU C8051F060 as the core, through the sensor to measure the rotation of the propeller in weeks, the flow velocity and flow rate is calculated, and through the liquid crystal display real-time display;

Calculations required parameters, such as: hydraulic pitch coefficient, slip, drag coefficient of the instrument, measurement section, through a small keyboard set in advance.

In addition, the system also has the U disk read and write function, real time clock and serial nonvolatile data storage function, etc.
System block diagram is shown in figure 1.
Figure 1 system block diagram 2.

1 master control module system master control chip selects high integration MCU C8051F060 chips, the microcontroller is fully integrated mixed signal SoC (system on
Systemonchip)
, with MCS

51 kernel and instruction set is fully compatible with microcontrollers, besides has the standard 8051 digital peripheral components, has integrated the data acquisition and control system on chip that is commonly used in simulating parts and other digital peripherals and feature.
2.

2 signal acquisition module velocity signal acquisition is a propeller type current sensor.

Propeller type velocity sensor of the rotors turn every five forwards a signal, the signal as pulse signal, the capture function of C8051F060, measure pulse cycle, can calculate the current velocity.

Propeller type velocity sensor signals through high speed photoelectric coupler 6 n136 into C8051F060 T4EX side, T4 end to capture mode, T3 to square wave output mode, T3EX grounding, make the T3 the decrement count, T3 and T4 are linked together, after 10 k & Omega;
Pull-up resistors.

When T4EX receives the signal for the falling edge, T4 capture interrupt, through EXF4 queries.

When T4EX received signal pulse width is longer, the T4 overflow, at this time, there was no capture, in the heart of the interrupt overflow flag bit 0, overflow number plus 1, record the number of overflow, according to the number of overflow and RCAP4 value calculation of a pulse cycle, all the cycle time accumulative total time, using the data from the formula in flow velocity can be obtained.

Water level signal acquisition is mike pressure sensor is used to realize.
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Abstract: what are the factors influence the measuring accuracy of vortex flow meter scale information produced by excellent flow meter, flow meter manufacturer to offer you the quotation.

Now we face the most users are using vortex flowmeter measurement of steam flow, today we will give priority to with saturated steam to analysis together with everybody steam of vortex street flowmeter accuracy exactly what factors influence.
Problem analysis and solution:.

More flow meter manufacturers choose model price quote you are welcome to inquire, here is what are the factors influence the measuring accuracy of vortex flow meter scale article details.

Now we face the most users are using vortex flowmeter measurement of steam flow, today we will give priority to with saturated steam to analysis together with everybody steam of vortex street flowmeter accuracy exactly what factors influence.

Problem analysis and solution: 1, the steam is dry humidity analysis: in the steam containing water have an effect on accuracy of vortex flowmeter is 'the article we have introduced not contain too much water into steam, steam dryness under 85%.

Solution: when steam humidity higher than 85%, in 7 d - meter exports
Humidity transmitter 8 d.

2, excessive saturated steam pressure variation analysis: in the industrial field of normal pressure changes in the change in pressure is directly resulted in the density of saturated steam, when the pressure fluctuation value is higher than the rating, will directly affect the flow numerical height;

Solution: because the density of saturated vapor pressure and temperature are one-to-one correspondence, so we according to the change of pressure correction of density compensation method based on look-up table segmented correction 3, instrument installation of pipeline vibration analysis: larger installation without reinforcement, pipe when the vibration is larger, results in higher flow value solution: strengthening four triangular, steam pipe exports to atmospheric vortex flowmeter analysis: when flowmeter export to the atmosphere, will appear before and after the pressure difference is too big, easy to achieve flow velocity limit;

Solution: need to strictly control the saturated steam velocity makes it less than the maximum velocity of flow meter, or on the sides of vortex flowmeters are 5 rectifier, steam straight pipe before and after the installation of the wrong analysis: when the straight pipe before and after the meter is not in conformity with the requirements, the measuring principle of vortex flowmeters can be concluded that the distance is not in conformity with the requirement to reach vortex formation of the necessary conditions for the solution: straight pipe before and after the steam of vortex flow meter distance must be installed in strict accordance with the requirement to summarize: when the user after the purchase of vortex street flowmeter, during the installation process of Shanghai quality instrumentation engineers strong mind, read the instructions before installation, to avoid the unnecessary factors before and after the installation work above is all there is in this article, you are welcome to inquire me factory flowmeter selection, quotation, etc.
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can be used in a wide variety of ways.
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Abstract: what are the advantages of the electromagnetic flowmeter scale?

Information produced by excellent flow meter, flow meter manufacturer to offer you the quotation.
The main advantage of the electromagnetic flowmeter is as follows: 1)

Electromagnetic flowmeter sensor structure is simple, the measuring tube has no moving parts, no obstacles to fluid flow throttling components.

So when the fluid flow through timing does not cause any additional pressure loss.

More flow meter manufacturers choose model price quote you are welcome to inquire, what are the advantages of the electromagnetic flowmeter scale is the following?
The article details.

The main advantage of the electromagnetic flowmeter is as follows: 1)

Electromagnetic flowmeter sensor structure is simple, the measuring tube has no moving parts, no obstacles to fluid flow throttling components.

So when the fluid flow through timing does not cause any additional pressure loss, flow meter is running in one of the flowmeters zui low energy consumption.
2)

Measurable smudges medium, corrosive medium and clouding the liquid-solid two phase flow of traffic.

This is due to internal unimpeded flow meter tube parts, and the measurement of body contact is sounding pipe lining and electrode, the materials can choose according to the nature of the current body.

For example, made from poly three fluoride or ptfe lining, can measure all kinds of acid, alkali, salt and other corrosive medium.

Adopt wear-resisting rubber lining, is especially suitable for measuring with solid particle slurry, water slurry, wear a large liquid-solid two phase flow and various liquid with fiber and pulp suspension.
3)

Electromagnetic flowmeter is a kind of volume flow measuring instrument, in the process of measurement, it is not affected by the temperature of the measured medium, viscosity and density with conductivity (
In a certain range),
The influence of.

Therefore, electromagnetic flowmeter only after water calibration, it can used to measure the conductivity of liquid flow.
4)

The output of the electromagnetic flowmeter is proportional to the average flow velocity of the measured medium only, and with the flow state of symmetrical distribution (
Laminar or turbulent)
Has nothing to do.

So the electromagnetic flowmeter range very wide range, the measurement range can be up to 100:1, some even up to 1000:1 working flow range.
5)

Electromagnetic flowmeter without mechanical inertia, responsive, can measure the instantaneous pulse flow, also can measure the rate of flow of positive and negative two directions.
6)

Industrial use very wide range of the calibre of the electromagnetic flowmeter, from a few millimeters to a few meters, and the domestic existing diameter up to 3 m's real flow calibration equipment, which laid a foundation for the application and development of electromagnetic flow meter.

Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.
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Precision Matters: Accuracy Comparison of Coriolis vs. Magnetic Flow Meters

Introduction:

Flow meters are crucial instruments in various industries where accurate measurement of fluid flow rates is essential for process optimization. When it comes to choosing the right flow meter, precision is of utmost importance. In this article, we will compare the accuracy of two commonly used flow meters - Coriolis and Magnetic flow meters. We will delve into their working principles, advantages, limitations, and provide insights into their accuracy performance. Understanding the key differences between these flow meters will aid in making an informed decision for your specific application.

Working Principles:

1. Coriolis Flow Meters:

Coriolis flow meters operate on the principle of Coriolis effect. The meter consists of a tube through which the fluid flows. When the fluid enters the vibrating tube, it causes it to twist in proportion to mass flow rate. The degree of tube twist is directly related to the mass flow rate of the fluid. Sensors at the inlet and outlet of the tube measure the phase shift, which is converted into an accurate flow reading.

2. Magnetic Flow Meters:

Magnetic flow meters, also known as electromagnetic flow meters, rely on Faraday's Law of Electromagnetic Induction. These meters utilize a magnetic field and electrodes inserted into the pipe to measure flow. As the conductive fluid passes through the magnetic field, it generates a voltage proportional to the flow velocity. The electrodes detect this voltage and convert it into a flow rate reading.

Accuracy Performance:

1. Coriolis Flow Meters:

Coriolis flow meters are known for their exceptional accuracy. They offer high repeatability and can achieve accuracy levels of up to ±0.1% of the measured value. The direct measurement of mass flow also makes them less susceptible to variations in fluid density or temperature. Coriolis flow meters exhibit excellent turndown ratios, allowing accurate measurement across a wide flow range.

2. Magnetic Flow Meters:

Magnetic flow meters offer good accuracy, typically ranging from ±0.25% to ±1% of the measured value. However, their accuracy is dependent on the conductivity of the fluid. Lower conductivities may lead to lower accuracy levels. Magnetic flow meters also have limitations in measuring gas flow, as they are designed for conductive fluids only. Additionally, changes in fluid viscosity can affect the accuracy of magnetic flow meters.

Advantages and Limitations:

1. Coriolis Flow Meters:

Advantages:

- Direct measurement of mass flow.

- Superior accuracy and repeatability.

- Wide turndown ratio.

- Suitable for various fluids, including gases and slurries.

- Minimal pressure drop.

Limitations:

- Higher initial cost compared to magnetic flow meters.

- Can be bulky and require sufficient space for installation.

- Susceptible to pressure and temperature limitations based on the material of the flow tube.

2. Magnetic Flow Meters:

Advantages:

- Lower initial cost compared to Coriolis flow meters.

- Suitable for large pipe sizes and high flow rates.

- Non-invasive measurement, no pressure drop.

- Can measure both clean and dirty conductive fluids accurately.

Limitations:

- Dependent on fluid conductivity, limiting applications to conductive fluids only.

- Susceptible to the presence of air bubbles or gas in the fluid, affecting accuracy.

- Fluid viscosity changes can impact accuracy.

- Electrode coating or scaling can cause measurement errors.

Applications:

1. Coriolis Flow Meters:

Coriolis flow meters find applications in various industries, including:

- Oil and gas: Accurate measurement of crude oil, refined oil, gas flow, and custody transfer.

- Chemical processing: Measurement of chemicals, solvents, and corrosive fluids.

- Food and beverage: Measurement of dairy products, syrups, and beverage flow.

- Pharmaceutical: Accurate dosing and measuring of pharmaceutical ingredients.

- Water and wastewater: Monitoring flow rates and ensuring accurate billing.

2. Magnetic Flow Meters:

Magnetic flow meters are widely used in applications such as:

- Water and wastewater treatment: Monitoring flow rates, leak detection, and environmental compliance.

- Mining and mineral processing: Measurement of slurry flow rates and process optimization.

- Pulp and paper: Accurate monitoring of fluid flow in paper production.

- HVAC: Measurement of chilled water, hot water, and condenser water flow.

- Agriculture: Irrigation control and accurate measurement of fertilizer and chemical injection.

Conclusion:

When it comes to precise flow measurement, both Coriolis and Magnetic flow meters have their advantages and limitations. Coriolis flow meters offer unparalleled accuracy and versatility, making them suitable for a wide range of applications. Magnetic flow meters, on the other hand, provide good accuracy at a lower cost, particularly for conductive fluid measurements. Understanding the specific requirements of your application is crucial in selecting the most accurate and cost-effective flow meter. By weighing the pros and cons of each technology, you can make an informed decision to achieve optimal process performance and efficiency.

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Navigating the Regulatory Landscape for Mass Flow Meters in Industrial Applications

The importance of mass flow meters in industrial applications cannot be understated. These instruments are essential for accurately measuring the flow rate of gases and liquids in a wide range of industrial processes. However, the regulatory landscape surrounding mass flow meters can be complex and challenging to navigate. In this article, we will explore the regulatory requirements that govern the use of mass flow meters in industrial applications, and provide guidance on how to ensure compliance with these requirements.

Understanding the Regulatory Landscape

The regulatory landscape for mass flow meters is governed by a variety of national and international standards and regulations. In the United States, for example, mass flow meters used in industrial applications are subject to regulations from agencies such as the Environmental Protection Agency (EPA) and the Occupational Safety and Health Administration (OSHA). These regulations set out requirements for factors such as accuracy, safety, and environmental impact, and failure to comply with them can result in serious consequences for industrial operators.

In addition to national regulations, mass flow meters in industrial applications are also subject to international standards set by organizations such as the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). These standards establish requirements for factors such as metrological performance, electromagnetic compatibility, and functional safety, and ensure that mass flow meters meet a high level of performance and reliability.

It is important for industrial operators to have a comprehensive understanding of the regulatory landscape governing mass flow meters in order to ensure compliance with all relevant requirements. Failure to comply with regulatory standards can result in costly fines, legal disputes, and damage to the reputation of the organization.

Compliance Challenges

Navigating the regulatory landscape for mass flow meters in industrial applications can present several challenges for industrial operators. One of the key challenges is the complexity and diversity of the regulatory requirements that apply to mass flow meters. These requirements can vary significantly depending on factors such as the type of industrial process, the nature of the fluids being measured, and the specific application of the mass flow meter.

In addition, the regulatory landscape for mass flow meters is constantly evolving, with new standards and regulations being introduced on a regular basis. This can make it difficult for industrial operators to stay up to date with the latest requirements and ensure that their mass flow meters remain in compliance.

Another challenge is the need for accurate and reliable measurement data. Regulatory standards for mass flow meters often set out strict requirements for factors such as accuracy, repeatability, and resolution. Ensuring that mass flow meters meet these requirements can be a complex task, particularly in industrial applications where the measurement of flow rates is critical to the safety and efficiency of the process.

Best Practices for Compliance

Despite the challenges posed by the regulatory landscape, there are several best practices that industrial operators can follow to ensure compliance with regulatory requirements for mass flow meters. One of the most important best practices is to stay informed about the latest developments in the regulatory landscape. This can involve staying up to date with the latest standards and regulations, as well as participating in industry forums and events where regulatory issues are discussed.

Another best practice is to work with reputable suppliers and manufacturers of mass flow meters. By sourcing mass flow meters from trusted suppliers, industrial operators can ensure that their instruments meet the latest regulatory requirements and have been manufactured to the highest quality standards. It is also important to work with suppliers who provide comprehensive support and guidance on regulatory compliance, including assistance with certification and testing requirements.

In addition, industrial operators should invest in regular maintenance and calibration of their mass flow meters. Regular maintenance can help to ensure that mass flow meters remain in optimal working condition and continue to meet regulatory requirements for factors such as accuracy and repeatability. Calibration is also essential for verifying the accuracy of mass flow meters and ensuring that they provide reliable measurement data.

Future Developments in Regulatory Landscape

Looking ahead, the regulatory landscape for mass flow meters in industrial applications is likely to continue evolving in response to changing industry needs and technological developments. One area of particular focus is likely to be the integration of digital technologies and connectivity into mass flow meters, which has the potential to improve the accuracy and reliability of measurement data, as well as streamline compliance with regulatory requirements.

In addition, there may be increased focus on sustainability and environmental impact, with regulations and standards being introduced to promote the use of mass flow meters that minimize waste and reduce emissions. This could involve requirements for factors such as energy efficiency, material usage, and end-of-life disposal, and may require industrial operators to make changes to their existing mass flow meter infrastructure.

As the regulatory landscape continues to evolve, it will be important for industrial operators to stay informed and proactive in their approach to compliance. This may involve working closely with industry associations and regulatory bodies to understand the latest developments and ensure that mass flow meters remain in compliance with all relevant requirements.

Conclusion

In conclusion, navigating the regulatory landscape for mass flow meters in industrial applications can be a complex and challenging task. However, by staying informed about the latest standards and regulations, working with reputable suppliers, and investing in regular maintenance and calibration, industrial operators can ensure compliance with regulatory requirements and the accuracy and reliability of their mass flow meters. As the regulatory landscape continues to evolve, it will be essential for industrial operators to stay proactive and adaptable in their approach to compliance, in order to meet changing industry needs and technological developments.

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