Sewage flow meters- Wastewater flow meters

Sewage flow meter, also known as a wastewater flow meter. The sewage flow meter measures the flow of various sewages in pipes and open channels. Common sewage flow meters are magnetic flow meters, non-contact ultrasonic flow meters, etc.

Industries like wastewater, river water, industrial gas.

What is wastewater flow?

Sewage flow or wastewater can be a pain to accurately measure. The environment is corrosive and humid. While the flow itself can experience wide swings due to inflow and infiltration. Wastewater is usually carried in non-full open channel pipes.

So, all the flow measurement instruments suitable for Sewage flow are called Sewage flow meters, or wastewater flow meters.

Here you can find a Sewage flow meter to measure the flow of wastewater for your application.

How is wastewater measured?

Magnetic flow meters

Sewage Flow Meters

The electromagnetic flowmeter is based on Faraday’s law of electromagnetic induction. That is, the measured medium flows perpendicular to the direction of magnetic lines of force. Thus generating an induced electromotive force in a direction perpendicular to the flow of the medium and the lines of magnetic force.

The induced electromotive force is proportional to the measured medium flow, and the instantaneous flow rate can be obtained by using the flow rate, and the cross-sectional area of ​​the pipe.

The conductivity in water is one of the prerequisites for the electromagnetic flowmeter to work properly.

The sewage contains a large number of impurities and salt and has a certain conductivity.

Therefore, the electromagnetic flowmeter can be used for sewage measurement.

For pure water, it cannot be measured with an electromagnetic flowmeter.

The advantages of the electromagnetic flowmeter are high precision, stable measurement and wide application range.

The electrode and the inner lining can be selected according to the medium, and can also be used for measuring work in a bad medium.

The disadvantage is that it is easily interfered by electromagnetic waves, and the diameter of the pipe is larger.

The more expensive the price, the larger the diameter of the electromagnetic flowmeter is not easy to disassemble, and the maintenance is difficult.

Guess you like: Magnetic Flow Meters technical guide|What is &How they work? 

Ultrasonic flowmeter

ultrasonic flowmeter
ultrasonic flowmeter

The working principle of the ultrasonic flowmeter (Best Guide to Ultrasonic Level Transmitter) is that, by means of the time difference measurement principle. A pair of ultrasonic probes transmit signals through the intermediate medium to the other side of the tube wall and are received by the other probe. And the other side of the probe also transmits a signal to be the first one.

Extended reading: Ultrasonic Insertion Flow Meter for Lined/Large Pipes

The probe is received. In this process, since the signal delivery time is affected by the medium flow rate, there is a certain time difference.

Based on this, the ultrasonic flowmeter calculates the corresponding flow value by means of the relevant formula.

In general, ultrasonic flow meters can be divided into two types: external clip type and plug-in type.

If the length of the straight pipe before the flowmeter does not meet the installation requirements, a multi-channel ultrasonic flowmeter can be installed.

Compared with the electromagnetic flowmeter, the installation of the ultrasonic flowmeter on the large diameter (especially the large diameter of 1 m or more) has obvious advantages, and the construction is not difficult, the cost is relatively low, and the maintenance is convenient.

The external clip-type ultrasonic flowmeter (Ultrasonic flow measurement) is easy to carry and install.

Open channel flowmeter

Most of the sewage treatment plant sewage discharge methods are natural flow, that is, the flow of sewage in the pipeline or in the pipeline is not full.

A waterway that flows in such a non-full-tube state, that is, a waterway with a free surface, is called an “open channel.”

Even in the so-called “dark channel” waterway, since the liquid flows naturally, it also belongs to the open channel.

For such waterways, conventional pressurized full flow meters cannot be used when measuring flow.

The measured sewage contains various impurities and other organic chemical components.

Although it has been purified before the sewage is discharged, if a flow meter is used in direct contact with the sewage medium, scaling will inevitably occur inside the flowmeter after a long time.

Or the situation of being corroded, thus affecting the smooth progress of the measurement work.

The advantage of the open channel flowmeter is that the measuring range is large, and the flow measurement is not affected by the return of the tributary surface, the sediment in the water, the bubbles, and the water level. And the flow sensor will have resistance to the water flow, the structure is simple, the volume is small. And the installation is Convenience.

It is used in the Pearl River Delta area. The standard channels do not need to be modified, they can be installed directly, and the installation and construction costs are low. Therefore, it is suitable for measuring the discharge of sewage from sewage treatment plants.

Extended reading:
What is the K-factor in a flow meter?
Cryogenic Flow Meters|Liquid Nitrogen-Liquid Oxygen-LNG fluids

Orifice flowmeter

The throttling flowmeter is a metering device, for metering flow that has been used in many previous years. It has the longest history and the most usage.

Nowadays, the common type is the circular orifice type and the tapered inlet plate type.

The working principle is to participate in the one-plate saving part in the fluid pipeline, and the pressure difference transmitter is introduced through the pressure guiding tube to measure the pressure difference between the upstream and the downstream of the saving piece.

According to the measured pressure difference, the instantaneous value of the flow is obtained by accounting.

Because of the inactivity of the water in the pressure guiding tube, in the colder area, the orifice tube of the outdoor equipment in winter is simply frozen (frozen), so that the differential pressure instrument cannot work normally.

When measuring dirty sewage, the orifice plate needs to be cleaned frequently.

If the cleaning is not timely, the measurement accuracy is reduced, and the pressure tube is often blocked by dirt, and the appearance cannot be used.

When the flow rate is measured by the orifice plate method, there are disadvantages such as large pressure loss and large protection amount.

Therefore, by changing the pressure-receiving method, for example, by using the radial pressure method, the influence of the fouling of the orifice plate can be reduced.

Widely used in environmental protection, metallurgy, chemical, pharmaceutical, water supply, food, paper, and other industries.

Read more about Sanitary Flow Meters-316SS,Tri clamp-Pulse- for Brewery

Sewage Flow Meter Selection

Before you make the selection of sewage flow metering instruments.

According to the actual situation of the site and the comparison of different flowmeters:

  1. Electromagnetic flowmeter measurement stability, a wide range of applications, can measure a variety of media, but is susceptible to electromagnetic interference. As the diameter of the pipe increases, its price will become more and more expensive.
  2. Ultrasonic flowmeter has low cost, high measurement accuracy, stable operation, convenient installation and maintenance, and the price will not become higher and higher with the increase of pipe diameter, but it will become more and more expensive due to the increase of sound path.
  3. The open channel flowmeter has a wide measuring range, and the flow measurement is not affected by the change of the medium, but it is limited by the size of the measuring tank.

Generally speaking, in the case of meeting the open channel installation conditions, the flow data is large, and the sewage flow can be transported through the open channel.

And the sputum flowmeter and the trough flowmeter are used for related operations.

In the actual measurement process, such equipment can meet the accuracy requirements of metering and save energy.

It uses a self-flowing method to transport sewage.

Extended reading: Industrial VS Residential inline water flow meters

You may like:

Inline water flow meters

Featured inline water flow meters Residential inline water flow meter The residential inline water flow meter is an essential thing in modern residents’ homes. The residential inline water flow meter is used to measure household water consumption. It is also Read More

Industrial Oxygen Flow Meters

Oxygen Flow Meters are digital flow meters that can measure industrial oxygen. It is very important to choose a suitable flow meter to measure and monitor the oxygen flow. Featured Industrial Oxygen Flow Meters for Sale Extended reading: Flow Totalizer Read More

Industrial CO2 flow meters

CO2 flow meters are instruments that can measure the flow of gaseous or liquid carbon dioxide. CO2 is a common industrial gas, and effective measurement is very important. CO2 gas flow meter Precession Vortex Gas Flowmeter, like a vortex flowmeter, Read More

Biogas Flow Meters Selection Guide

Biogas Flow Meters are instruments that can measure the flow of biogas. Could be a vortex flow meter, thermal mass flow meter, etc. Commonly used in biogas stations, biogas production fermentation tanks, etc. Featured Biogas Flow Meters Purpose of biogas Read More

Industrial LPG/Propane flow meter

Featured Inline Propane Flow Meter Propane is also generally referred to as liquefied petroleum gas (LPG). So what is the difference and connection between propane and LPG? Next, let’s take a look together. Propane VS LPG Because propane is one Read More

Industrial Fuel Flow Meters

What is a fuel flow meter? The fuel flow meter is an instrument that can monitor fuel flow. Industrial Fuel is an important energy source. For example, diesel, marine fuel, gasoline, etc. Featured inline fuel flow meters for sale Common Read More

Micro flow meters for low flow liquids

Micro flow meters for Low Flow Indicating is a big challenge for the manufacturing industry. The smaller the flow, the more difficult the measurement. Featured Micro flow meters for Sale Further reading: Industrial LPG/Propane flow meter Microflow meter is also Read More

Clamp on flow meters for liquid pipes

Clamp on flow meters refers to the non contact flow meter, or strap on flow meters, which clamps the ultrasonic sensor outside the pipeline for measurement. Best clamp-on flow meters for sale Clamp-on flow sensor for clamp-on flow meters With Read More

Liquid Turbine Flow Meters

Liquid Turbine Flow Meter is one of the most ideal flow meters for measuring liquids. Liquid Turbine Flow Meter is suitable for measuring low-viscosity media, such as water, diesel, gasoline, etc. Featured Liquid Turbine Flow Meters Types of Turbine Flow Read More

Cryogenic Flow Meters for Sale

Cryogenic Flow Meters for Highly Accurate and Reliable Cryogenic Fluids Flow Measurement. Featured Cryogenic Flow Meters Cryogenic Turbine Flow Meter The liquid nitrogen flow meter is a commonly used cryogenic flow meter. The low-temperature turbine flowmeter is a dedicated liquid Read More

Sanitary Flow Meters for Sale

Common sanitary flow meters are sanitary magnetic flow meters and sanitary turbine flow meters. Composed of 304/316 stainless steel. A Sanitary flowmeter with Tri-Clamp fittings is easier to install and disassemble. Suitable for the food hygiene industry. Featured Sanitary Flow Read More

Digital Water Flow Meters

Featured Digital Water Flow Meters for Sale Water flow meter types Water flow meters are flow meters that can diaplay the flow rate of industrial water pipe. A water flow meter measures the amount of water flowing through a pipe. Read More

Sino-Inst offers sewage flow meter products. About 85% of these are Magnetic flow meters, 3% are Ultrasonic water meters. A wide variety of sewage flow meter options are available to you, such as free samples, paid samples.

The top-selling countries or regions are China, India, and Israel, which supply 99%, 1%, and 1% of sewage flow meter respectively. Sewage flow meter products are most popular in Domestic Market, Mid East, and North America. You can ensure product safety by selecting from a certified suppliers, with ISO9001, and Other certifications.

Request a Quote

Please provide your measurement parameters or details. Sino-Instrument support customer customization and OEM

Leave a Reply

Your email address will not be published. Required fields are marked *