What kind of flow meter is better to choose for sewage measurement

It is better to choose an electromagnetic flowmeter or a vortex flowmeter, but it is best to use an electromagnetic flowmeter, because there are more impurities in the sewage or I am afraid that it will be blocked.

Electromagnetic or ultrasonic, and open channels can be three.

There are many kinds of instruments that can be used in sewage flow meters, which need to know whether there are other media in the sewage, what is the temperature pressure and range, and finally the installation and power supply.

Sewage flow measurement is relatively not very complicated working conditions, conventional flowmeters can be selected and purchased, such as electromagnetic flowmeters, V-cone flowmeters.

The selection of sewage flow meter can be selected according to the size of the required caliber, the medium to be measured, the flow range, the temperature requirements during measurement, and the power supply mode.

Summary. The biggest difference between a sewage flow meter and a water supply flow meter is the different fluids they are suitable for. The water supply flow meter is suitable for the measurement of clean water flow in the water supply system, while the sewage flow meter is suitable for the discharge flow measurement of pollutants such as sewage and wastewater.

Due to the particularity of sewage, sewage flowmeters have different designs and requirements from water supply flowmeters in terms of material, structure, accuracy, etc. For example, sewage flow meters generally use corrosion-resistant materials, adopt special structural design to avoid dirt residue and blockage, and require higher accuracy. Therefore, when selecting a flow timer, you must select the appropriate type according to the actual situation.

The biggest difference between a sewage flow meter and a water supply flow meter is the different fluids they are suitable for. The water supply flow meter is suitable for the flow measurement of clean water in the water supply system, while the sewage flow meter is suitable for the discharge flow measurement of pollutants such as sewage and wastewater. Due to the state particularity of sewage, sewage flowmeters have different designs and requirements from water supply flowmeters in terms of material, structure, accuracy, etc.

For example, the sewage flow meter will generally use corrosion-resistant materials, adopt special structural design to avoid dirt residue and blockage, and require higher accuracy. Therefore, when selecting a flow timer, you must select the appropriate type according to the actual situation.

I'm sorry I don't understand, but can you elaborate on that?

The biggest difference between a sewage flow meter and a water supply flow meter is the different fluids they are suitable for. The water supply flow meter is suitable for the flow measurement of clean water in the water supply system, while the sewage flow meter is suitable for the discharge flow measurement of pollutants such as sewage and wastewater. Due to the state particularity of sewage, sewage flowmeters have different designs and requirements from water supply flowmeters in terms of material, structure, accuracy, etc.

For example, the sewage flow meter will generally use corrosion-resistant materials, adopt special structural design to avoid dirt residue and blockage, and require higher accuracy. Therefore, when selecting a flow timer, you must select the appropriate type according to the actual situation.

Look at the caliber, medium, temperature, pressure, choose the right electrode, lining,

Selection of the installation location of the sewage flow meter: The installation location must ensure that the pipe is always filled with the liquid to be measured. Choose a place where the liquid flow pulse is small, that is, it should be away from pumps, valves, elbows and other local resistance parts.

When measuring biphasic (solid, liquid, gas, liquid) liquids, it is important to select a place where phase separation is not likely to occur. The inner diameter or circumference of the pipe to be measured is easy to measure, and the ovality should be small. 3) The length of the straight pipe section of the sewage electromagnetic flowmeter

The length of the straight pipe section on the upstream side of the sensor installation pipeline should be greater than or equal to 10d, and the downstream side should not be less than 5d (d is the diameter of the pipeline to be measured). MGG KL-DW sewage flowmeter is composed of MGG KL-DW sewage flowmeter sensor and MGG KL sewage flowmeter converter, which is used to measure the volume flow of various conductive liquids in the pipeline and in the channel. MGG KL-DW sewage flowmeter can be widely used in the measurement of the volume flow of conductive liquids in municipal water supply, steel, petroleum, chemical industry, electric power, industry, water conservancy, water administration and water resources departments, especially suitable for flow measurement of channels, small rivers and sewage metering in environmental protection.

Electromagnetic flowmeter.

The electromagnetic flowmeter from Cowell, Germany is good, you can try it.

It seems that there is no flow meter called sewage! Some manufacturers have made it up. The main flowmeters for measuring sewage are electromagnetic flowmeters, rotameters, vortex flowmeters, etc.

The landlord can choose the most suitable flowmeter according to the working conditions (flow, diameter, temperature, pressure, accuracy) combined with the performance of the flowmeter. If you really can't fix it, I'll help you solve it, it's free!

It is best to use a turbine flowmeter and find a manufacturer, so that the quality and quality are guaranteed.

It is best to use an electromagnetic flowmeter, I recommend Shanghai Huaqiang Instrument, I used it, and the performance is good.

The electromagnetic flowmeter mainly does not require maintenance to measure wastewater, and compared with other types of flowmeters, it can maintain the same accuracy after many years and has a longer service life.

Advantages of electromagnetic flowmeters compared to other flowmeters in wastewater treatment.

With the acceleration of urbanization in China, environmental pollution is becoming more and more serious. Because in sewage treatment, it is necessary to analyze and manipulate the discharged sewage, additives, sludge, etc., so flow measurement is very important. Among the many flowmeter products used for sewage measurement, the electromagnetic flowmeter is the most accurate.

The electromagnetic flowmeter has two parts: flow sensor and transmitter, the sensor measuring tube is equipped with an excitation coil up and down, the magnetic field passes through the measuring tube after the excitation current is passed, and a pair of electrodes are installed on the inner wall of the measuring tube and touches with the liquid to draw out the induced electric potential and send it to the transmitter. According to the converter and sensor assembly method, there are two types: separate type and integrated type. In sewage treatment technology, large-diameter flowmeters are mostly split, some devices are underground, and some are on the ground.

The principle of operation of the electromagnetic flowmeter is based on Faraday's law of electromagnetic induction. When a conductive metal rod moves perpendicular to the direction of the magnetic field lines at a certain speed, an induced voltage occurs.

The function of electromagnetic flowmeters on the market is also very different, and it can only measure one-way flow and output analog signals. The intelligent electromagnetic flowmeter has a variety of functions such as bidirectional flow measurement, range switching, upper and lower limit flow alarm, air traffic and power supply interception alarm, small signal removal, flow display and total accounting, automatic verification and self-diagnosis of defects, communication with the host computer and motion configuration.

There is a prerequisite for the use of electromagnetic flowmeter, that is, the liquid to be measured must be conductive, and the conductivity is lower than the threshold, so it cannot be used. Generally, sewage has a high conductivity, because it contains many ions, which is also one of the advantages of electromagnetic flowmeters used to measure sewage.

Some characteristics of the electromagnetic flowmeter itself also determine that it is more suitable for the measurement of sewage compared with other flowmeter products. The electromagnetic flowmeter has good stability, it is not affected by external factors such as temperature, pressure, viscosity, etc., and there is no pressure loss caused by shortening or protruding inside the measuring tube. The start signal detected by the other flow elements is a voltage that changes exactly linearly with the average flow velocity of the fluid, and is independent of other properties of the fluid.

In addition, the structure of the electromagnetic flowmeter is compact, the volume is small, the device, operation and maintenance are very convenient, the measurement system is selected for intelligent planning, the whole sealing is good, and it can operate normally in a harsh environment. Compared with other flowmeter products, vortex flowmeter due to skill factors, the caliber is difficult to make bigger, ultrasonic flowmeter in the first relative electromagnetic lack of advantages, so in the sewage treatment profession, electromagnetic flowmeter, especially large-diameter electromagnetic flowmeter has a great advantage, and has been very widely used.

Option 1: Yes, if your water temperature is below 80 degrees, it is not pure water (non-conductive), and if it is a sewage slurry, it will not be deposited in the pipe. Electromagnetic flowmeter is absolutely preferred, with mature technology, strong anti-interference, minimal maintenance, and moderate in flowmeter.

Accuracy in the second plan: if you are a non-conductive liquid, the vortex flowmeter depends on your flow rate, the flow rate is low and he can't measure it, and if the sewage can not be measured, the accuracy is not as high as the above people say, you can hit 1% accuracy please, if you are an insider, please 1: don't fool people, many injustices will kill yourself, 2:

If you don't know, go learn first.

Option 3: If it is not sewage, and the diameter of the pipe is less than 100 mm:

The glass rotameter (float flowmeter) is the most affordable, a few hundred dollars, but you can only look at the instantaneous flow; Turbine flowmeter, moderate accuracy, is a wheel rotating in it, may be replaced once in a year or two, the faster the flow rate, the shorter the time interval for changing, because there will be wear; In addition, the highest accuracy is the gear flowmeter, similar to our water meter, but it is relatively high, slightly cheaper than the electromagnetic flowmeter, and the large-caliber one may be more expensive.

The third option has the best advantages, especially in the measurement of oil, because it cannot be used for non-conductive electromagnetism, he has advantages, and the disadvantage is that the wear is greater than electromagnetic maintenance.

Option one, if your medium can satisfy it, choose it, yes.

Scheme two, generally a large caliber and non-conductive medium, and to the flow rate is very fast before considering the use, I think it is better to use the V cone, power bar, afraid of vibration, easy to interfere, generally strongly recommend this product to you, in addition to not understanding, that is, they have no other products. Many factories can do vortex streets, but the quality of imports is still advantageous.

Velocity flowmeter electromagnetic. Vortex Street can do 0, 2% volumetric flowmeter can do 0, 2% mass type can achieve 0, 1% accuracy is very high, the key is what you do. Choose the right cost-effective meter.

It is recommended to use an electromagnetic one, which is easy to install and has no pressure drop. Maintenance is also simple.