Digital flow meters for Water

Table of content
Electromagnetic Flowmeters for water flow measurements
Features of eletromagnetic water flow meter
Turbine Flowmeters for water flow measurements
Features of turbine water flow meter
Vortex shedding flowmeter for water measurements devices
How Vortex water flow meter works?
Features of vortex type water flow meter
Digital Rotameters for water flow measurement
How digital water rotameter flow meter works?
Advantages to use digital variable area flow meter for water flow measurement
Ultrasonic water flow meter
Features of ultrasonic water flow meter
Open channel water flow meter
How open channel water flow meter works?
Applications of open channel water flow meter
Digital Mass water flow meter
Features of digital mass water flow meter
Digital Micro water flow meter

Anytime there is a discussion on the best digital flow meter for water we often recommend ultrasonic flow meter, vortex flow meter, turbine flow meters, and electromagnetic flow meter. All these digital flow meters are cost-effective and they're reliable because of their efficiency. Therefore in this article, I will highlight these digital flow meters to help you in deciding on which to purchase.

Electromagnetic Flowmeters for water flow measurements

The electromagnetic flowmeter is a flow instrument that uses Faraday's law of electromagnetic induction to measure the volume flow of conductive liquids. Water, as a conductive liquid, can of course be measured using an electromagnetic flowmeter.
Electromagnetic flow meters are very essential in monitoring the control system in treatment plants homes and another industrial control process
In this case, the electromagnetic method is fit for liquid flow measurement because it does not restrict the flow of the water under measurement. The electromagnetic method measures the flow independent of the temperature, viscosity, pressure of the liquid. Therefore all SHD mag flow meter display total and instant flow which are the key parameters that can be configured in the display.

Features of eletromagnetic water flow meter

The electromagnetic flow meter for water offers several key features:
- Magnetic water flow meter includes a standard 4-20 mA analog output and pulse output for accurate flow measurement.
- The flow meter can display water flow rate measurements in various units, including gallons per minute (GPM), liters per hour (L/h), and cubic meters per hour (m³/h), providing comprehensive water flow information.
- Communication options available include HART protocol, Profibus DP, and RS485, enhancing integration with other systems.
- The water flow sensor is designed without any moving parts, ensuring durability and reducing maintenance requirements.
- It offers a cost-effective solution for water line flow measurement with advanced electronic components.
- With a water sensor size of up to 2000 mm, it is well-suited for digital irrigation applications.
- Various sensor sizes are available, including 1 inch digital water flow meter, 2 inches water flow meter, 8 inches water flow meter, and 12 inches electronic water flow meter, and can be customized for larger digital flow meters. Electromagnetic flow meters are beneficial because it lacks moving parts. The sensors which are installed in its pipeline do not obstruct the flow of the water which is being measured. The absence of these moving parts implies that there will be little or no maintenance requirements when taking water flow measurement.

Turbine Flowmeters for water flow measurements

The turbine flow meter, also known as an impeller flow meter, consists of a sensor and a converter. The turbine water flow sensor utilizes a multi-blade rotor to detect the average velocity of the water, which is then used to calculate the water flow rate or total volume.
Turbine flow meters are SLW series which has proven to be an economical flowmeter choice. Therefore it can measure only clean water which has no solids. This type of flow meter measures water with low conductivity such as pure water, condensate water, DI water meter, and RO （Reverse osmosis）water meter.

Features of turbine water flow meter

The following are Features of the Turbine  water flow meter.
-It is a digital flow meter that has an output of 4-20 MA and it is capable of having RS485 communication.
-It can show water flow information because it has an electronic display.
-It has a 24 V DC power supply or an option for battery power.
-It can handle a max water temperature range of 150c.
-It is an affordable water flow meter that is designed as a simple pulse out meter.
-Parameters such as set flow meter, set flow units, clear the total flow is visible in its electronic display.
-The water turbine flow meter features a straightforward design with minimal processed components, making it lightweight and easy to maintain.
-Water turbine flow meter offers a high level of accuracy, typically ranging from 0.5% to 1.0%, and exhibits excellent repeatability.
- Additionally, it can be engineered for high-pressure water turbine flow meter, capable of withstanding pressures of up to 100 bar or more.
- Digital water turbine flow meter is also cost-effective, making it a practical choice for various applications.
Turbine Flowmeters can be a great option because it is usable for a wide range of water measurement applications, it is easy to set up and operate, it is economical to buy and it is precise and highly accurate.

Vortex shedding flowmeter for water measurements devices

How Vortex water flow meter works?

The vortex water flow meter operates by introducing a non-streamlined bluff body into the water flow. As the water passes the bluff body, it alternately separates, generating two series of regular vortices on either side. Within a specific flow range, the frequency of vortex shedding is directly proportional to the average water flow velocity in the pipeline, allowing for accurate measurement of the wter flow rate.
The vortex flowmeter can measure liquids, steam, and gases. It has a digital versatile sensor that can make precise water measurements. Additionally, it can also be used as an electronic water flow meter.

Features of vortex type water flow meter

-It has a digital display that can show information on instant  water flow, total flow.
-It is a stainless steel flow meter for water flow measurement
-It can handle a maximum temperature range of 350C, hence can be used as high temperature water flow meter, such as boiler water flow meter, condensate water flow meter.
-There is various process connection such as tri-clamp for sanitary and hygienic industry, flange and wafer.
-It has an option of HART and RS485 communication for enhanced system integration.
-Vortex water flow meter has a 24 DC power supply or battery power supply.
-It is also a 2-wire electronic water flow meter.
-The vortex flow meter is also ideal for its long term accuracy. Maintenance is not much required because there are no moving parts. Its temperature range is also impressive hence being reliable. Additionally, the installation cost is also cheaper.

Digital Rotameters for water flow measurement

How digital water rotameter flow meter works?

The operating principle of a rotameter involves a float that moves up and down within a vertically tapered tube in response to changes in water flow. As the water flow rate varies, the float adjusts the flow area, allowing for the measurement of volumetric water flow, hence the name "variable area flow meter." While the float can serve as a simple flow indicator for measuring water flow, Silver Automation Instruments has advanced it into an electronic rotor flow meter equipped with transmitter. This electronic rotameter head not only displays the water flow rate but also the water total flow. Additionally, the rotameter transmitter can output a 4-20 mA signal, with options for RS485 or HART communication.

Advantages to use digital variable area flow meter for water flow measurement

-Metal tube rotor flowmeter measures water flow, which is more durable than glass tube rotameter.
-Electronic rotameter flowmeter can have analog output, and can also output upper and lower limit alarm signals for various process control and remote transmission.
-There are options for explosion-proof water flowmeter and intrinsic safety water flowmeter.
-Electronic variable area flowmeter is generally suitable for low water flow measurement.
-There are also heat preservation and jacket flowmeter option for water.
-Variable area water flow sensor size ranges from 1/2" to 8".
-It can be made into vertical water flow meter, also horizontal water flow meter.
-The structure is simple and basically no maintenance is required.
-A variety of process connection options for rotameter water flow meter device, such as clamp connection, threaded connection, flange connection, etc.

Ultrasonic water flow meter

Principle of ultrasonic water flowmeter: When sound waves propagate in the water, the speed of sound wave propagation increases in the downstream direction and decreases in the upstream direction. The same propagation distance has different propagation times. The difference in travel time over the same distance is used to calculate the water flow rate. This method is known as a transit-time ultrasonic flow meter.

Features of ultrasonic water flow meter

1. The non-contact ultrasonic water flow meter features a clamped on transducers that are mounted on the surface of the pipe, eliminating the need to stop the water flow or cut the pipe during installation.
2. There are both fixed wall-mounted mounted ultrasonic water flow meter and portable handheld ultrasonic water flow meters.
3. The non-intrusive ultrasonic water meter has no internal components that obstruct the flow, resulting in zero pressure loss.
4. Transit-time ultrasonic water meters are typically used for measuring clean water in unlined pipes. For measuring sewage water flow, a Doppler ultrasonic flow meter is recommended.
5. Ultrasonic water flow meters are highly cost-effective, with no need for additional pipeline modifications during installation.
6. In China, ultrasonic flow meters are not suitable for measuring water flow in pipelines with a diameter smaller than DN32. For pipelines below DN32, a turbine water flow meter or electromagnetic water flow meter is recommended.

Open channel water flow meter

How open channel water flow meter works?

The open channel flow meter is designed to measure natural flow in partially filled pipes or open channels with a free surface. The open channel flow meters offered by Silver Automation Instruments are typically used in conjunction with Parshall flumes. The principle of the ultrasonic open channel flow meter involves narrowing a section of the channel's cross-sectional area, causing the liquid level at the narrowed section to be lower than the upstream liquid level. The flow rate is determined by measuring the difference in liquid levels.

Applications of open channel water flow meter

Open channel flow meters are suitable for use in urban water supply diversion channels, cooling water diversion and drainage channels in thermal power plants, sewage treatment inflow and discharge channels, industrial and mining wastewater discharge, as well as in water conservancy projects and agricultural irrigation channels.

Digital Mass water flow meter

The Coriolis mass flowmeter is currently the most accurate water mass flowmeter in the world. Principle of Coriolis mass flowmeter for water: The fluid is in a rotating system while moving in a straight line, producing the Coriolis principle which is proportional to the mass flow rate.

Features of digital mass water flow meter

1. Directly measure the mass flow rate of water, rather than the mass flow rate converted by the volume flow rate and density relationship.
2. Measure the flow rate of various waters, ultrapure water, RO water, in short, any kind of water can be measured. On the contrary, electromagnetic cannot measure non-conductive water, and vortex water flow meter and turbine water flow meter cannot measure water containing impurities.
3. The vibration amplitude of the measuring tube is small, there are no obstructions and moving parts in the pipeline, and there is no pressure loss water flowmeter.
4. Not only measure the mass flow rate of water, but also measure the temperature and pressure of water, multi-parameter digital water flowmeter.
5. The highest precision water flowmeter, the accuracy can reach 0.1%. 6. Our company has micro water flowmeters and Coriolis mass flow controllers for water.
6. The digital mass water flow meter features a digital display and supports various communication protocols, including Profibus PA, HART, and MODBUS RTU. It offers flow or density output options for 4-20 mA and frequency signals. The mass flow meter can be powered by either a 24V DC or 220V AC supply.

Digital Micro water flow meter

Our company offers advanced digital type micro flow meters for precise water measurement, utilizing cutting-edge technology. We specialize in providing micro oval gear flow meters, micro differential pressure flow meters, and micro Coriolis mass flow meters. Each of these devices represents a high level of technological sophistication and accuracy in flow measurement. Below is a brief overview of our offerings.

Micro Coriolis flow meter/flow controller	Coriolis flow meter Principle High accuracy (±0.5%FS) and wide measuring grange, max turndown ratio can be 100：1 Can detect 40 g/h water mass flow or even smaller water flow Option with display type or without display type
Micro DP flow meter	Much cheaper than Coriolis water flow meter Can detect min water flow 0.5 ml/min(CCM) Output 4-20Ma,0-5V or 1-5V option RS485 or RS232 Max water pressure rating : 150 psi Water temperature range : 10~50 °C
Micro oval gear flow meter	Pulse output NPN or PNP 24V DC power supply Min water flow can detect: 10 ml/min Stainless steel small water flow meter

Conclusion

Digital flow meters are very reliable best on the functionality. It is perfectly used for water measurements and monitoring. All you need to do is to familiarise yourself with digital flow water meter prices as well as quality to enable you to identify which is quite stable and reliable so that when you purchase one you will be sure to have the best digital flow meter for water measurements. Welcome to contact us Silver Automation Instruments and provide us your digital water flow measurement applications.