Select proper irrigation flow meter

Water circulate meters are required by national water companies for model spanking new and existing agricultural irrigation functions to measure and manage surface water and groundwater use. There is a rising must preserve sources and balance the water needs of agriculture with different industries, and as the population continues to grow, residential use is driving water conservation in unprecedented ways.
Irrigation scheduling is the method irrigators use to determine the correct frequency and period of watering. It includes understanding, making use of and then monitoring and controlling the necessary instruments similar to soil moisture sensors, rain gauges and circulate meters to ensure efficient water use in crop manufacturing. This minimizes water waste and supports water conservation while maximizing crop well being and yield. Good irrigation planning practices include knowing how much water is used in each field. A properly chosen and put in move meter precisely measures the amount of water applied. Accurate circulate meters are an necessary software for implementing a great irrigation program.
The two most common kinds of irrigation circulate meters are electromagnetic meters and propeller meters. Propeller meters are mechanical move meters that have been around in irrigation since 1919 and therefore make up a big portion of the installed base of irrigation water meters. Fifteen years in the past, many people thought that propeller meters have been the best meter choice for irrigation – that’s not the case right now. Expensive propeller meter repairs have led many meter customers to look for different circulate measurement options. With advances in expertise, electromagnetic flowmeters are now available for battery power at distant irrigation locations. Many have lengthy battery life, high accuracy in tight areas, and no transferring components to wear out; they are unaffected by particles. Some electromagnetic flow meters are similar in worth to mechanical propeller move meters.
Use the following 4 ideas to assist select the best move meter for irrigation.
Table of Contents

What is the application?

How essential is accuracy?

What is your meter maintenance schedule?

Electromagnetic or mechanical?

What is the application?

Knowledge of the fluid medium, circulate vary, temperature, strain, line dimension, desired sign output and available installation space are all essential to make sure correct flow meter selection.
What is the application? Is it groundwater, surface water, pond water or manure slurry lagoon water? While เกจวัดแรงดัน may be suitable for clear water functions the place the flow vary is inside the meter’s functionality, electromagnetic meters supply the best accuracy and efficiency in each clear and soiled water purposes. With no transferring components, weeds, trash and dust might turn into entangled in the mechanical meter and simply circulate by way of the magnetic meter.
What are the minimum and maximum move ranges? When selecting a mechanical propeller circulate meter, it is important to know the minimum and most circulate ranges. A propeller move meter requires a minimal circulate rate to allow the bearing meeting and propeller to show quick enough to make sure accurate readings. If the flow fee exceeds the mechanical meter’s rating, the bearing assembly can endure expensive damage and the meter is not going to operate correctly. Because there are not any shifting parts to wear, electromagnetic flowmeters present higher accuracy over a wider flow vary than mechanical meters.
What are the temperatures and pressures? Most flowmeters offered for this market are rated to function at temperatures as much as 150 psi and a hundred and forty F. Most of these applications fall within that temperature and stress vary. However, it is at all times wise to verify the application temperature and strain.
What is the scale of the line? This will assist decide the style of meter. Both electromagnetic and mechanical gauges can be found in full bore and plug-in configurations. For cost and ease of set up, the plug-in style could also be the greatest choice for larger line sizes.
Does the meter require a signal output? Some purposes require the instrument to ship alerts corresponding to pulses, 4-20mA, or Modbus. In some cases, the output is used to send a signal to a distant telemetry system, allowing the irrigator to collect meter data remotely. Signal outputs on propeller circulate meters are optional and usually require the added price of a transmitter or particular digital register that may provide the output. Most electromagnetic circulate meters have pulse sign output as a normal function, making them “telemetry system ready” and might present Modbus or 4-20mA output alerts for a small additional price.
How a lot house is out there to put in the meter? The straight pipe requirements for flow meters are costly by means of materials and installation labor. In the case of including a model new flow meter to an current facility, there’s often not enough area to accommodate the straight pipe sections required for correct move measurement. Mechanical propeller meters require more room to install due to the longer straight run requirements to make sure proper and correct efficiency. Straightening vanes or rectifiers can be mounted in front of the propeller meter to shorten the straight pipe requirement, but can significantly enhance the fee and set up labor involved. Typically, a normal full-bore electromagnetic flow meter will match well in tight spaces and measure circulate precisely.
How important is accuracy?

In common, electromagnetic meters are extra accurate than mechanical meters. Most electromagnetic flow meters for irrigation provide +/-1% flow over a wide range of move charges with no head loss. The most common mechanical meter utilized in irrigation is the propeller flow meter. Propeller meters usually provide +/-2% accuracy over a specified move range and should experience some head loss. Because there are no moving elements to wear, electromagnetic meters can keep accuracy throughout the lifetime of the meter.
What is your meter maintenance schedule?

As with most farm equipment, all irrigation move meters require consideration sooner or later.
Mechanical propeller meters have transferring elements, corresponding to propellers, bearings and mechanical registers, that can put on out, inflicting interruptions in measurement knowledge and leading to expensive repairs. The number of components for mechanical gauges has elevated dramatically over the years, and the fee to restore a part is nearly as excessive as the fee to exchange it. The commonplace warranty on most mechanical propeller gauges is one year.
Electromagnetic meters wouldn’t have any breakable shifting components and upkeep is normally limited to replacing the batteries. Many battery-powered electromagnetic flowmeters now offer a 5-year battery life, and the cost of battery replacement is a fraction of the price associated with typical mechanical meter repairs. In addition, most electromagnetic flowmeters come standard with a two- to five-year guarantee, depending on the model.
Electromagnetic or mechanical?

Electromagnetic move meters – also called magnetic meters or just electrometers – function based on Faraday’s Law – if a conductive fluid (such as irrigation water) passes via a magnetic field, a small voltage is generated. The movement of the conductive fluid through the sector generates a small quantity of electrical power, similar to a generator (more flow = extra voltage). An electron coil placed on the surface of the fluid is immediately energized. The magnetic field passes through the fluid at proper angles, the electrodes measure the altering voltage, and the display unit reveals the rate and the total. Electromagnetic move meters have been around for 60 years, simply not for irrigation. They are usually used for municipal and industrial, water and wastewater applications. In the final 15 years or so, magnetometer expertise has developed so rapidly that some can now be battery powered and are perfect for irrigation use. Most electromagnetic move meters come standard with many mechanical propeller move meter choices. Many instances, the overall out-of-pocket price of an electromagnetic move meter might be lower than the value of a mechanical propeller circulate meter. To make certain you get your money’s worth, think about what you need out of your flowmeter – added pulse output, straightened vanes (for tight space installations), excessive capability bearing assemblies, digital readout, data logging and any other choices that may be required with a mechanical propeller meter – and then compare the price to a battery-powered electromagnetic meter, which usually embrace all of the choices you need as standard features. In the end, electromagnetic flowmeters supply: higher accuracy over a wider move range, no shifting elements to exchange, durability, no circulate blockage, lengthy battery life, low maintenance costs, longer warranties, and minimal straight pipe necessities for tight area installations. In addition to full bore, some electromagnetic flowmeters are now available with saddle inserts for easy installation in new installations and retrofit/replacement of current saddle propeller meters.
AYT Digital Liquid Magnetic Flow Meter

Learn More AYT Digital Liquid Magnetic Flow Meter

AFT Split Type Electromagnetic Flow Meter

Learn More AFT Split Type Electromagnetic Flow Meter

ACT Insertion Type Magnetic Flowmeter

Learn More ACT Insertion Type Magnetic Flowmeter

Mechanical Propeller Meters – Also known as propeller circulate meters or just propeller flow meters, function based on the following precept – A propeller move meter consists of a rotating device, normally a spiral impeller, situated in the air stream. The impeller rotates at a velocity proportional to the speed of the flow. As เกจวัดแรงดัน flows through the pipe, it rotates the propeller. The rotational motion is then transmitted to the pinnacle of the meter through a gear or drive cable. The instantaneous and complete flow rates may be learn on a mechanical or digital meter register. Although they work on the identical precept, these meters are available in quite so much of mounting configurations to meet the wants of the installer: saddle, flange, threaded finish, grooved end, and so on., making set up easier. Propeller meters provide a cheap flow metering resolution when only mechanical move and whole flow are required. They sometimes work properly in clear water applications, but particles carrying water can damage moving elements. While mechanical propeller move meters have been as soon as probably the most economical choice for irrigation, that is usually now not the case.
Apure is a designer and producer of a broad range of circulate metering, subject instrumentation and process analyzer products. Since 2007, we’ve been offering progressive options for users in irrigation, water treatment, groundwater, floor water and chemical processing purposes. Our merchandise have a status for sturdiness and accuracy at competitive costs and are offered through a community of home and worldwide distributors. We make use of just-in-time manufacturing strategies and are extremely dedicated to steady enchancment. Our give attention to innovation, product worth and customer accessibility has led to nearly two decades of constant development. Feel free to contact us for technical, quotation or distributor assist.
More articles on flowmeters:
Difference between move meter and move transmitter

Flow meter calibration

Useful information about move items

Mass flow rate vs volumetric flow feee
On thing to keep in your mind on the subject of #keyword# would be to certainly not think you will need to take a course that you won’t be comfortable together with, or have tried before without success. No one else could decide for you the most effective way for you to move forward. When you’ve the bravery to try one thing fresh, whether or not it’s really a challenge, you might benefit by being able to take a more detailed glance at your basic thinking as well as habitual actions. This is the key reason why it’s so helpful to view as many sources as you can when you’re looking for aid. When you are doing your homework, here are two Internet sites that you might find helpful, #links# and #links#. The extra factors involving view you consider, the more likely it is that you’ll find answers that are tailor made for you.


Water circulate meters are required by nationwide water agencies for model spanking new and present agricultural irrigation purposes to measure and manage floor water and groundwater use. There is a growing must conserve sources and balance the water wants of agriculture with different industries, and as a outcome of the population continues to develop, residential use is driving water conservation in unprecedented ways.
Irrigation scheduling is the process irrigators use to determine the correct frequency and length of watering. It includes understanding, applying and then monitoring and controlling the required devices corresponding to soil moisture sensors, rain gauges and circulate meters to ensure efficient water use in crop production. This minimizes water waste and helps water conservation whereas maximizing crop health and yield. Good irrigation planning practices embrace knowing how much water is used in each subject. A properly chosen and installed flow meter precisely measures the amount of water applied. Accurate move meters are an necessary device for implementing a good irrigation program.
The two most common kinds of irrigation flow meters are electromagnetic meters and propeller meters. Propeller meters are mechanical circulate meters which have been round in irrigation since 1919 and due to this fact make up a big portion of the installed base of irrigation water meters. Fifteen years in the past, many individuals thought that propeller meters have been the most effective meter selection for irrigation – that isn’t the case at present. Expensive propeller meter repairs have led many meter customers to look for other move measurement choices. With advances in technology, electromagnetic flowmeters are now obtainable for battery power at remote irrigation areas. Many have lengthy battery life, excessive accuracy in tight areas, and no transferring elements to wear down; they are unaffected by particles. Some electromagnetic circulate meters are similar in price to mechanical propeller move meters.
Use the next 4 suggestions to help choose the best move meter for irrigation.
Table of Contents

What is the application?

How necessary is accuracy?

What is your meter upkeep schedule?

Electromagnetic or mechanical?

What is the application?

Knowledge of the fluid medium, flow vary, temperature, stress, line size, desired sign output and out there set up house are all necessary to ensure proper move meter selection.
What is the application? Is it groundwater, surface water, pond water or manure slurry lagoon water? While mechanical meters could also be appropriate for clear water applications where the move range is inside the meter’s capability, electromagnetic meters supply the very best accuracy and performance in each clear and dirty water applications. With no shifting parts, weeds, trash and dust might become entangled in the mechanical meter and easily circulate via the magnetic meter.
What are the minimum and most circulate ranges? When selecting a mechanical propeller move meter, it’s critical to know the minimum and most circulate ranges. A propeller move meter requires a minimal flow fee to allow the bearing meeting and propeller to show quick enough to ensure accurate readings. If the move fee exceeds the mechanical meter’s ranking, the bearing assembly can suffer pricey injury and the meter is not going to function properly. Because there are no transferring elements to put on, electromagnetic flowmeters provide greater accuracy over a wider move range than mechanical meters.
What are the temperatures and pressures? Most flowmeters supplied for this market are rated to function at temperatures up to 150 psi and one hundred forty F. Most of these purposes fall inside that temperature and stress vary. However, it is always wise to verify the appliance temperature and pressure.
What is the size of the line? This will help determine the style of meter. Both electromagnetic and mechanical gauges are available in full bore and plug-in configurations. For value and ease of installation, the plug-in style may be your finest option for bigger line sizes.
Does the meter require a sign output? Some applications require the instrument to ship signals corresponding to pulses, 4-20mA, or Modbus. In some instances, the output is used to ship a signal to a remote telemetry system, allowing the irrigator to gather meter knowledge remotely. Signal outputs on propeller move meters are optional and often require the added value of a transmitter or particular digital register that can provide the output. Most electromagnetic move meters have pulse sign output as a normal function, making them “telemetry system ready” and might present Modbus or 4-20mA output alerts for a small additional price.
How a lot space is out there to install the meter? The straight pipe requirements for move meters are costly in phrases of materials and installation labor. In the case of adding a new flow meter to an present facility, there could be often not enough area to accommodate the straight pipe sections required for correct circulate measurement. Mechanical propeller meters require more space to install as a result of longer straight run requirements to ensure correct and accurate efficiency. Straightening vanes or rectifiers could be mounted in front of the propeller meter to shorten the straight pipe requirement, but can considerably enhance the price and installation labor concerned. Typically, a normal full-bore electromagnetic circulate meter will fit well in tight areas and measure flow accurately.
How necessary is accuracy?

In common, electromagnetic meters are more correct than mechanical meters. Most electromagnetic flow meters for irrigation provide +/-1% circulate over a wide range of circulate charges with no head loss. The commonest mechanical meter utilized in irrigation is the propeller circulate meter. Propeller meters usually provide +/-2% accuracy over a specified move range and will expertise some head loss. Because there aren’t any moving elements to wear, electromagnetic meters can maintain accuracy all through the lifetime of the meter.
What is your meter upkeep schedule?

As with most farm tools, all irrigation move meters require consideration in some unspecified time in the future.
Mechanical propeller meters have moving components, similar to propellers, bearings and mechanical registers, that may wear out, inflicting interruptions in measurement data and resulting in costly repairs. The number of parts for mechanical gauges has elevated dramatically over the years, and the price to repair a component is type of as excessive as the cost to switch it. The standard guarantee on most mechanical propeller gauges is one yr.
Electromagnetic meters wouldn’t have any breakable shifting elements and maintenance is often restricted to replacing the batteries. Many battery-powered electromagnetic flowmeters now offer a 5-year battery life, and the value of battery substitute is a fraction of the cost related to typical mechanical meter repairs. In addition, most electromagnetic flowmeters come commonplace with a two- to five-year warranty, relying on the brand.
Electromagnetic or mechanical?

Electromagnetic flow meters – also called magnetic meters or simply electrometers – function according to Faraday’s Law – if a conductive fluid (such as irrigation water) passes through a magnetic field, a small voltage is generated. The movement of the conductive fluid through the sphere generates a small amount of electrical energy, just like a generator (more move = extra voltage). An electron coil placed on the outside of the fluid is immediately energized. The magnetic area passes via the fluid at proper angles, the electrodes measure the altering voltage, and the show unit shows the rate and the whole. Electromagnetic move meters have been around for 60 years, just not for irrigation. They are sometimes used for municipal and industrial, water and wastewater applications. In the last 15 years or so, magnetometer technology has evolved so rapidly that some can now be battery powered and are excellent for irrigation use. Most electromagnetic flow meters come standard with many mechanical propeller flow meter choices. Many occasions, the overall out-of-pocket value of an electromagnetic flow meter shall be lower than the value of a mechanical propeller flow meter. To make sure you get your money’s worth, think about what you want from your flowmeter – added pulse output, straightened vanes (for tight space installations), excessive capacity bearing assemblies, digital readout, knowledge logging and another choices that could be required with a mechanical propeller meter – and then evaluate the worth to a battery-powered electromagnetic meter, which typically include all the choices you want as standard options. In the tip, electromagnetic flowmeters supply: higher accuracy over a wider circulate range, no moving components to exchange, durability, no flow blockage, lengthy battery life, low upkeep costs, longer warranties, and minimal straight pipe requirements for tight house installations. In addition to full bore, some electromagnetic flowmeters are now out there with saddle inserts for simple set up in new installations and retrofit/replacement of present saddle propeller meters.
AYT Digital Liquid Magnetic Flow Meter

Learn More AYT Digital Liquid Magnetic Flow Meter

AFT Split Type Electromagnetic Flow Meter

Learn More AFT Split Type Electromagnetic Flow Meter

ACT Insertion Type Magnetic Flowmeter

Learn More ACT Insertion Type Magnetic Flowmeter

Mechanical Propeller Meters – Also often recognized as propeller flow meters or just propeller circulate meters, operate based on the following principle – A propeller move meter consists of a rotating system, usually a spiral impeller, located within the air stream. The impeller rotates at a pace proportional to the speed of the circulate. As the water flows through the pipe, it rotates the propeller. The rotational movement is then transmitted to the top of the meter via a gear or drive cable. The instantaneous and total circulate charges could be learn on a mechanical or digital meter register. Although they work on the same precept, these meters are available in a wide selection of mounting configurations to meet the wants of the installer: saddle, flange, threaded finish, grooved end, etc., making set up easier. Propeller meters present a cost-effective move metering resolution when only mechanical move and whole circulate are required. They typically work well in clear water functions, however debris carrying water can harm shifting elements. While mechanical propeller move meters had been as soon as probably the most economical choice for irrigation, that is often now not the case.
Apure is a designer and producer of a wide range of circulate metering, area instrumentation and course of analyzer products. Since 2007, we’ve been offering progressive solutions for customers in irrigation, water therapy, groundwater, floor water and chemical processing purposes. Our merchandise have a reputation for sturdiness and accuracy at competitive prices and are bought by way of a network of domestic and international distributors. We employ just-in-time manufacturing strategies and are highly committed to continuous enchancment. Our focus on innovation, product worth and buyer accessibility has led to just about two decades of constant growth. Feel free to contact us for technical, citation or distributor assist.
More articles on flowmeters:
Difference between circulate meter and circulate transmitter

Flow meter calibration

Useful information about circulate items

Mass circulate fee vs volumetric circulate feee

Scroll to Top