Select right irrigation circulate meter

Water flow meters are required by nationwide water businesses for brand new and current agricultural irrigation applications to measure and manage surface water and groundwater use. There is a growing need to conserve sources and stability the water needs of agriculture with other industries, and as the inhabitants continues to grow, residential use is driving water conservation in unprecedented ways.
Irrigation scheduling is the process irrigators use to determine the right frequency and period of watering. It involves understanding, applying after which monitoring and controlling the required devices corresponding to soil moisture sensors, rain gauges and flow meters to ensure environment friendly water use in crop production. This minimizes water waste and supports water conservation while maximizing crop well being and yield. Good irrigation planning practices embody knowing how a lot water is used in every subject. A properly chosen and put in flow meter accurately measures the amount of water utilized. Accurate circulate meters are an necessary device for implementing a great irrigation program.
The two most common forms of irrigation move meters are electromagnetic meters and propeller meters. Propeller meters are mechanical circulate meters that have been round in irrigation since 1919 and due to this fact make up a large portion of the installed base of irrigation water meters. Fifteen years ago, many individuals thought that propeller meters have been the most effective meter alternative for irrigation – that’s not the case today. Expensive propeller meter repairs have led many meter users to search for different flow measurement options. With advances in technology, electromagnetic flowmeters are now available for battery energy at remote irrigation places. Many have lengthy battery life, excessive accuracy in tight spaces, and no shifting elements to put on down; they are unaffected by debris. Some electromagnetic circulate meters are related in price to mechanical propeller flow meters.
Use the next four tips to help select the best circulate meter for irrigation.
Table of Contents

What is the application?

How essential is accuracy?

What is your meter upkeep schedule?

Electromagnetic or mechanical?

What is the application?

Knowledge of the fluid medium, flow range, temperature, strain, line measurement, desired sign output and available installation house are all essential to ensure proper circulate meter choice.
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 purposes where the move range is throughout the meter’s functionality, electromagnetic meters offer the very best accuracy and efficiency in each clear and dirty water applications. With no moving components, weeds, trash and dust could turn into entangled within the mechanical meter and easily flow via the magnetic meter.
What are the minimum and maximum move ranges? When selecting a mechanical propeller move meter, it’s critical to know the minimum and most circulate ranges. A propeller circulate meter requires a minimum circulate price to permit the bearing assembly and propeller to show fast enough to make sure correct readings. If the flow fee exceeds the mechanical meter’s rating, the bearing assembly can undergo costly damage and the meter is not going to operate properly. Because there are no transferring components to put on, electromagnetic flowmeters present larger accuracy over a wider flow range than mechanical meters.
What are the temperatures and pressures? Most flowmeters offered for this market are rated to operate at temperatures as much as a hundred and fifty psi and one hundred forty F. Most of these purposes fall inside that temperature and stress range. However, it’s always wise to confirm the application temperature and pressure.
What is the dimensions 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 set up, the plug-in fashion could also be the solely option for larger line sizes.
Does the meter require a signal output? Some functions require the instrument to send alerts similar to pulses, 4-20mA, or Modbus. In some circumstances, the output is used to send a sign to a distant telemetry system, allowing the irrigator to gather meter information remotely. Signal outputs on propeller circulate meters are elective and often require the added value of a transmitter or special digital register that may provide the output. Most electromagnetic move meters have pulse sign output as a standard function, making them “telemetry system ready” and may present Modbus or 4-20mA output signals for a small additional cost.
How much house is on the market to put in the meter? The straight pipe requirements for flow meters are expensive by method of supplies and installation labor. In the case of adding a new move meter to an present facility, there’s often not sufficient area to accommodate the straight pipe sections required for correct flow measurement. Mechanical propeller meters require more room to put in due to the longer straight run requirements to ensure proper and correct performance. Straightening vanes or rectifiers can be mounted in entrance of the propeller meter to shorten the straight pipe requirement, however can considerably enhance the cost and installation labor involved. Typically, a regular full-bore electromagnetic move meter will match well in tight areas and measure flow precisely.
How important is accuracy?

In common, electromagnetic meters are extra correct than mechanical meters. Most electromagnetic flow meters for irrigation present +/-1% flow over a extensive range of flow rates with no head loss. The most typical mechanical meter used in irrigation is the propeller flow meter. Propeller meters typically present +/-2% accuracy over a specified move vary and will expertise some head loss. Because there are not any transferring components to put on, electromagnetic meters can maintain accuracy throughout the life of the meter.
What is your meter maintenance schedule?

As with most farm tools, all irrigation move meters require attention in some unspecified time in the future.
Mechanical propeller meters have shifting components, corresponding to propellers, bearings and mechanical registers, that can put on out, inflicting interruptions in measurement data and resulting in pricey repairs. The variety of elements for mechanical gauges has increased dramatically over time, and the fee to repair a component is type of as excessive as the cost to switch it. The commonplace guarantee on most mechanical propeller gauges is one year.
Electromagnetic meters do not have any breakable transferring parts and maintenance is often limited to changing the batteries. Many battery-powered electromagnetic flowmeters now offer a 5-year battery life, and the worth of battery replacement is a fraction of the fee associated with typical mechanical meter repairs. In addition, most electromagnetic flowmeters come standard with a two- to five-year warranty, depending on the model.
Electromagnetic or mechanical?

Electromagnetic circulate meters – also called magnetic meters or simply electrometers – operate according to Faraday’s Law – if a conductive fluid (such as irrigation water) passes via a magnetic subject, a small voltage is generated. The movement of the conductive fluid by way of the sphere generates a small quantity of electrical power, similar to a generator (more circulate = more voltage). An electron coil placed on the surface of the fluid is immediately energized. The magnetic subject passes by way of the fluid at proper angles, the electrodes measure the altering voltage, and the display unit reveals the speed and the whole. Electromagnetic move meters have been round for 60 years, just not for irrigation. They are typically used for municipal and industrial, water and wastewater functions. In the last 15 years or so, magnetometer expertise has advanced so rapidly that some can now be battery powered and are good for irrigation use. Most electromagnetic circulate meters come standard with many mechanical propeller flow meter choices. Many times, the general out-of-pocket cost of an electromagnetic move meter might be lower than the price of a mechanical propeller flow meter. To ensure you get your money’s worth, think about what you want out of your flowmeter – added pulse output, straightened vanes (for tight space installations), excessive capacity bearing assemblies, digital readout, knowledge logging and any other options that may be required with a mechanical propeller meter – and then examine the worth to a battery-powered electromagnetic meter, which usually embrace all the options you want as standard features. In the tip, electromagnetic flowmeters provide: higher accuracy over a wider move range, no transferring parts to exchange, sturdiness, no circulate blockage, lengthy battery life, low maintenance costs, longer warranties, and minimal straight pipe requirements for tight space installations. In addition to full bore, some electromagnetic flowmeters at the second are obtainable with saddle inserts for easy set up in new installations and retrofit/replacement of existing 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 move meters or just propeller move meters, operate according to the following principle – A propeller move meter consists of a rotating gadget, normally a spiral impeller, situated within the air stream. The impeller rotates at a speed proportional to the velocity of the flow. As the water flows through the pipe, it rotates the propeller. The rotational motion is then transmitted to the head of the meter via a gear or drive cable. The instantaneous and whole circulate rates may be read on a mechanical or digital meter register. Although they work on the identical precept, these meters are available in a big selection of mounting configurations to satisfy the wants of the installer: saddle, flange, threaded finish, grooved finish, etc., making installation easier. Propeller meters provide an economical circulate metering resolution when solely mechanical circulate and total circulate are required. They usually work well in clear water functions, however debris carrying water can injury transferring parts. While mechanical propeller flow meters have been once the most economical possibility for irrigation, that is usually now not the case.
Apure is a designer and manufacturer of a extensive range of flow metering, area instrumentation and course of analyzer merchandise. Since 2007, we’ve been providing revolutionary solutions for users in irrigation, water remedy, groundwater, surface water and chemical processing applications. Our merchandise have a popularity for durability and accuracy at competitive prices and are bought by way of a network of domestic and worldwide distributors. We make use of just-in-time manufacturing methods and are highly committed to continuous improvement. Our give consideration to innovation, product worth and customer accessibility has led to nearly two decades of consistent progress. Feel free to contact us for technical, citation or distributor assist.
เกจวัดแรงดันแก๊สlpg on flowmeters:
Difference between circulate meter and move transmitter

Flow meter calibration

Useful information about circulate models

Mass move rate vs volumetric circulate ratee
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 move meters are required by national water businesses for new and present agricultural irrigation applications to measure and manage surface water and groundwater use. There is a growing must preserve sources and stability the water needs of agriculture with different industries, and as the inhabitants continues to grow, residential use is driving water conservation in unprecedented ways.
Irrigation scheduling is the process irrigators use to find out the proper frequency and duration of watering. It entails understanding, making use of and then monitoring and controlling the necessary devices corresponding to soil moisture sensors, rain gauges and move meters to ensure efficient water use in crop manufacturing. This minimizes water waste and helps water conservation while maximizing crop well being and yield. Good irrigation planning practices embody knowing how much water is used in every area. A properly chosen and put in flow meter accurately measures the quantity of water utilized. Accurate move meters are an essential software for implementing a great irrigation program.
The two most typical kinds of irrigation circulate 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 ago, many individuals thought that propeller meters have been the most effective meter alternative for irrigation – that isn’t the case today. Expensive propeller meter repairs have led many meter users to look for different circulate measurement options. With advances in expertise, electromagnetic flowmeters are now out there for battery power at distant irrigation locations. Many have long battery life, high accuracy in tight areas, and no transferring components to put on out; they’re unaffected by particles. Some electromagnetic flow meters are comparable in value to mechanical propeller circulate meters.
Use the following 4 ideas to assist choose the best circulate 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, pressure, line size, desired sign output and obtainable installation area are all necessary to ensure correct circulate meter selection.
What is the application? Is it groundwater, floor water, pond water or manure slurry lagoon water? While mechanical meters could also be suitable for clear water purposes where the move range is throughout the meter’s functionality, electromagnetic meters supply the highest accuracy and performance in both clear and dirty water functions. With no transferring elements, weeds, trash and mud could turn out to be entangled within the mechanical meter and simply circulate by way of the magnetic meter.
What are the minimal and most circulate ranges? When choosing a mechanical propeller flow meter, it’s important to know the minimal and most circulate ranges. A propeller move meter requires a minimum circulate rate to permit the bearing meeting and propeller to turn fast sufficient to ensure accurate readings. If the circulate price exceeds the mechanical meter’s rating, the bearing meeting can suffer expensive damage and the meter will not operate properly. Because there are no transferring elements to put on, electromagnetic flowmeters provide greater accuracy over a wider move vary than mechanical meters.
What are the temperatures and pressures? Most flowmeters provided for this market are rated to function at temperatures up to one hundred fifty psi and one hundred forty F. Most of these functions fall inside that temperature and stress range. However, it is all the time wise to verify the appliance temperature and strain.
What is the size of the line? This will help decide the fashion of meter. Both electromagnetic and mechanical gauges can be found in full bore and plug-in configurations. For price and ease of installation, the plug-in type may be the solely option for bigger line sizes.
Does the meter require a signal output? Some functions require the instrument to ship signals such as pulses, 4-20mA, or Modbus. In some instances, the output is used to ship a sign to a distant telemetry system, allowing the irrigator to gather meter information remotely. Signal outputs on propeller move meters are optional and often require the added cost of a transmitter or special digital register that can present the output. Most electromagnetic move meters have pulse signal output as a regular feature, making them “telemetry system ready” and might present Modbus or 4-20mA output indicators for a small additional value.
How a lot area is available to put in the meter? The straight pipe requirements for circulate meters are expensive by way of materials and set up labor. In the case of including a brand new flow meter to an existing facility, there is typically not sufficient area to accommodate the straight pipe sections required for accurate move measurement. Mechanical propeller meters require more room to install as a outcome of longer straight run requirements to make sure correct and accurate performance. Straightening vanes or rectifiers may be mounted in entrance of the propeller meter to shorten the straight pipe requirement, but can significantly improve the fee and set up labor involved. Typically, a normal full-bore electromagnetic move meter will match properly in tight areas and measure flow precisely.
How necessary is accuracy?

In general, electromagnetic meters are extra correct than mechanical meters. Most electromagnetic move meters for irrigation present +/-1% move over a wide range of circulate rates with no head loss. The commonest mechanical meter utilized in irrigation is the propeller move meter. Propeller meters typically provide +/-2% accuracy over a specified flow range and may experience some head loss. Because there are not any shifting elements to put on, electromagnetic meters can keep accuracy all through the life of the meter.
What is your meter maintenance schedule?

As with most farm gear, all irrigation move meters require attention in some unspecified time within the future.
Mechanical propeller meters have shifting elements, similar to propellers, bearings and mechanical registers, that can wear out, causing interruptions in measurement knowledge and leading to expensive repairs. The variety of parts for mechanical gauges has elevated dramatically through the years, and the fee to repair a component is type of as excessive as the price to switch it. The commonplace guarantee on most mechanical propeller gauges is one year.
Electromagnetic meters do not have any breakable moving elements and maintenance is usually limited to replacing the batteries. Many battery-powered electromagnetic flowmeters now offer a 5-year battery life, and the value of battery alternative is a fraction of the cost associated with typical mechanical meter repairs. In addition, most electromagnetic flowmeters come standard with a two- to five-year guarantee, relying on the model.
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 area, a small voltage is generated. The motion of the conductive fluid through the sector generates a small quantity of electrical energy, just like a generator (more flow = more voltage). An electron coil positioned on the surface of the fluid is immediately energized. The magnetic field passes through the fluid at right angles, the electrodes measure the altering voltage, and the display unit reveals the speed and the entire. Electromagnetic move meters have been around for 60 years, just 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 shortly that some can now be battery powered and are excellent for irrigation use. Most electromagnetic flow meters come standard with many mechanical propeller circulate meter choices. Many times, the overall out-of-pocket value of an electromagnetic circulate meter shall be lower than the value of a mechanical propeller move meter. To make certain you get your money’s value, contemplate what you want out of your flowmeter – added pulse output, straightened vanes (for tight space installations), high capability bearing assemblies, digital readout, data logging and some other options which could be required with a mechanical propeller meter – and then compare the value to a battery-powered electromagnetic meter, which usually include all of the choices you need as commonplace features. In the tip, electromagnetic flowmeters offer: higher accuracy over a wider circulate range, no moving elements to replace, durability, no move blockage, lengthy battery life, low upkeep prices, longer warranties, and minimum straight pipe necessities for tight house installations. In addition to full bore, some electromagnetic flowmeters at the second are obtainable with saddle inserts for simple set up 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 generally identified as propeller circulate meters or just propeller move meters, operate based on the following principle – A propeller move meter consists of a rotating system, often a spiral impeller, positioned within the air stream. The impeller rotates at a pace proportional to the speed of the move. As the water flows by way of the pipe, it rotates the propeller. The rotational movement is then transmitted to the top of the meter by way of a gear or drive cable. The instantaneous and whole flow rates may be learn on a mechanical or digital meter register. Although they work on the identical principle, these meters can be found in quite a lot of mounting configurations to meet the wants of the installer: saddle, flange, threaded finish, grooved end, and so on., making set up simpler. Propeller meters present an economical flow metering resolution when only mechanical move and total circulate are required. They usually work well in clear water functions, but particles carrying water can injury shifting parts. While mechanical propeller flow meters were once the most economical option for irrigation, this is normally not the case.
Apure is a designer and producer of a variety of flow metering, field instrumentation and process analyzer merchandise. Since 2007, we have been providing innovative options for users in irrigation, water remedy, groundwater, surface water and chemical processing functions. Our merchandise have a popularity for sturdiness and accuracy at competitive prices and are bought by way of a network of domestic and international distributors. We make use of just-in-time manufacturing strategies and are extremely dedicated to continuous enchancment. Our give consideration to innovation, product worth and customer accessibility has led to nearly twenty years of consistent growth. Feel free to contact us for technical, citation or distributor help.
More articles on flowmeters:
Difference between flow meter and move transmitter

Flow meter calibration

Useful details about move items

Mass flow fee vs volumetric move ratee

Leave a Comment