Water move meters are required by nationwide water businesses for model spanking new and current agricultural irrigation applications to measure and manage surface water and groundwater use. There is a growing need to conserve resources and steadiness the water needs of agriculture with other industries, and as the population 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 duration of watering. It entails understanding, applying after which monitoring and controlling the necessary devices similar to soil moisture sensors, rain gauges and flow meters to make sure efficient water use in crop manufacturing. digital pressure gauge minimizes water waste and supports water conservation while maximizing crop well being and yield. Good irrigation planning practices include figuring out how much water is used in every area. A correctly chosen and installed flow meter accurately measures the quantity of water utilized. Accurate circulate meters are an necessary device for implementing an excellent irrigation program.
The two commonest types of irrigation move meters are electromagnetic meters and propeller meters. Propeller meters are mechanical flow meters that have been round in irrigation since 1919 and therefore make up a large portion of the installed base of irrigation water meters. Fifteen years ago, many individuals thought that propeller meters had been the best meter alternative for irrigation – that isn’t the case right now. Expensive propeller meter repairs have led many meter customers to look for different circulate measurement choices. With advances in know-how, electromagnetic flowmeters at the moment are out there for battery energy at distant irrigation locations. Many have long battery life, high accuracy in tight areas, and no moving components to put on down; they’re unaffected by debris. Some electromagnetic move meters are similar in value to mechanical propeller move meters.
Use the following four ideas to assist choose the right flow meter for irrigation.
Table of Contents
What is the application?
How necessary is accuracy?
What is your meter maintenance schedule?
Electromagnetic or mechanical?
What is the application?
Knowledge of the fluid medium, flow range, temperature, pressure, line dimension, desired sign output and available installation house are all needed to ensure correct move meter choice.
What is the application? Is it groundwater, floor water, pond water or manure slurry lagoon water? While mechanical meters may be suitable for clear water purposes where the circulate range is throughout the meter’s capability, electromagnetic meters provide the highest accuracy and efficiency in each clear and soiled water purposes. With no transferring elements, weeds, trash and dirt might turn into entangled in the mechanical meter and simply circulate via the magnetic meter.
What are the minimum 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 minimal move rate to allow the bearing meeting and propeller to turn quick sufficient to ensure accurate readings. If the move fee exceeds the mechanical meter’s score, the bearing meeting can suffer pricey injury and the meter will not function correctly. Because there are not any shifting components to put on, electromagnetic flowmeters provide higher accuracy over a wider flow range than mechanical meters.
What are the temperatures and pressures? Most flowmeters provided for this market are rated to operate at temperatures up to a hundred and fifty psi and 140 F. Most of those purposes fall inside that temperature and pressure range. However, it is always clever to verify the appliance temperature and strain.
What is the size of the line? This will assist determine the fashion of meter. Both electromagnetic and mechanical gauges are available in full bore and plug-in configurations. For price and ease of installation, the plug-in fashion may be your finest option for larger line sizes.
Does the meter require a signal output? Some applications require the instrument to ship indicators corresponding to pulses, 4-20mA, or Modbus. In some instances, the output is used to send a signal to a distant telemetry system, allowing the irrigator to collect meter knowledge remotely. Signal outputs on propeller flow meters are optional and normally require the added cost of a transmitter or special digital register that can present the output. Most electromagnetic move meters have pulse sign output as a standard function, making them “telemetry system ready” and might provide Modbus or 4-20mA output signals for a small extra cost.
How a lot area is on the market to put in the meter? The straight pipe requirements for flow meters are costly when it comes to materials and set up labor. In the case of adding a new circulate meter to an existing facility, there could be often not enough house to accommodate the straight pipe sections required for correct circulate measurement. Mechanical propeller meters require more space to put in 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 considerably improve the price and installation labor involved. Typically, a normal full-bore electromagnetic move meter will fit well in tight spaces and measure circulate precisely.
How important is accuracy?
In basic, electromagnetic meters are extra correct than mechanical meters. Most electromagnetic move meters for irrigation provide +/-1% flow over a broad range of circulate rates with no head loss. The most common mechanical meter utilized in irrigation is the propeller circulate meter. Propeller meters usually present +/-2% accuracy over a specified move vary and should experience some head loss. Because there aren’t any moving parts to wear, electromagnetic meters can preserve accuracy throughout the life of the meter.
What is your meter upkeep schedule?
As with most farm tools, all irrigation circulate meters require consideration sooner or later.
Mechanical propeller meters have transferring parts, corresponding to propellers, bearings and mechanical registers, that may put on out, inflicting interruptions in measurement information and leading to expensive repairs. The number of components for mechanical gauges has increased dramatically through the years, and the cost to repair a part is nearly as excessive as the cost to replace it. เกจวัดแรงดัน on most mechanical propeller gauges is one yr.
Electromagnetic meters wouldn’t have any breakable transferring components and upkeep is usually limited to changing the batteries. Many battery-powered electromagnetic flowmeters now supply a 5-year battery life, and the worth of battery replacement 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 model.
Electromagnetic or mechanical?
Electromagnetic circulate meters – also called magnetic meters or simply electrometers – function based on Faraday’s Law – if a conductive fluid (such as irrigation water) passes through a magnetic subject, a small voltage is generated. The movement of the conductive fluid via the sphere generates a small quantity of electrical energy, similar to a generator (more move = extra voltage). An electron coil positioned on the outside of the fluid is immediately energized. The magnetic subject passes by way of the fluid at proper angles, the electrodes measure the changing voltage, and the display unit reveals the rate and the whole. Electromagnetic move meters have been round for 60 years, simply not for irrigation. They are typically used for municipal and industrial, water and wastewater applications. In the last 15 years or so, magnetometer expertise has evolved so shortly that some can now be battery powered and are perfect for irrigation use. Most electromagnetic move meters come commonplace with many mechanical propeller flow meter options. Many instances, the general out-of-pocket cost of an electromagnetic circulate meter shall be less than the worth of a mechanical propeller move meter. To make sure you get your money’s price, consider what you want from your flowmeter – added pulse output, straightened vanes (for tight area installations), high capability bearing assemblies, digital readout, data logging and any other options which may be required with a mechanical propeller meter – after which examine the price to a battery-powered electromagnetic meter, which generally embody all the choices you need as normal features. In the end, electromagnetic flowmeters supply: higher accuracy over a wider flow range, no moving components to replace, sturdiness, no move blockage, long battery life, low maintenance costs, longer warranties, and minimal straight pipe requirements for tight area installations. In addition to full bore, some electromagnetic flowmeters at the second are out there with saddle inserts for straightforward installation 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 known as propeller circulate meters or simply propeller flow meters, operate based on the following principle – A propeller flow meter consists of a rotating gadget, usually a spiral impeller, located in the air stream. The impeller rotates at a velocity proportional to the rate of the move. As the water flows by way of the pipe, it rotates the propeller. The rotational movement is then transmitted to the head of the meter by way of a gear or drive cable. The instantaneous and total move charges could be learn 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 fulfill the wants of the installer: saddle, flange, threaded end, grooved end, and so forth., making set up easier. Propeller meters present a cost-effective move metering resolution when only mechanical move and complete circulate are required. They usually work nicely in clear water applications, however particles carrying water can harm shifting parts. While mechanical propeller flow meters had been as soon as essentially the most economical choice for irrigation, that is often now not the case.
Apure is a designer and manufacturer of a variety of circulate metering, subject instrumentation and process analyzer products. Since 2007, we have been offering progressive options for customers in irrigation, water remedy, groundwater, floor water and chemical processing functions. Our merchandise have a status for sturdiness and accuracy at aggressive costs and are bought via a network of domestic and worldwide distributors. We make use of just-in-time manufacturing strategies and are extremely dedicated to continuous improvement. Our give attention to innovation, product worth and buyer accessibility has led to almost 20 years of consistent development. Feel free to contact us for technical, quotation or distributor support.
More articles on flowmeters:
Difference between circulate meter and flow transmitter
Flow meter calibration
Useful details about circulate units
Mass circulate rate vs volumetric circulate ratee
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Water circulate meters are required by national water companies for model new and existing agricultural irrigation functions to measure and manage surface water and groundwater use. There is a growing need to preserve sources and balance the water wants of agriculture with other industries, and because the inhabitants continues to grow, residential use is driving water conservation in unprecedented ways.
Irrigation scheduling is the process irrigators use to discover out the correct frequency and length of watering. It entails understanding, applying after which monitoring and controlling the mandatory instruments such as soil moisture sensors, rain gauges and flow meters to make sure environment friendly 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 a lot water is used in each subject. A properly chosen and put in flow meter precisely measures the quantity of water utilized. Accurate circulate meters are an necessary software for implementing a good irrigation program.
The two most common types of irrigation circulate meters are electromagnetic meters and propeller meters. Propeller meters are mechanical circulate meters which have been around 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 people thought that propeller meters were one of the best meter choice for irrigation – that isn’t the case today. Expensive propeller meter repairs have led many meter customers to look for different circulate measurement options. With advances in know-how, electromagnetic flowmeters are now available for battery energy at remote irrigation locations. Many have lengthy battery life, excessive accuracy in tight areas, and no moving elements to put on out; they are unaffected by particles. Some electromagnetic circulate meters are similar in value to mechanical propeller flow meters.
Use the following 4 ideas to assist select the right move meter for irrigation.
Table of Contents
What is the application?
How important is accuracy?
What is your meter upkeep schedule?
Electromagnetic or mechanical?
What is the application?
Knowledge of the fluid medium, flow range, temperature, stress, line measurement, desired signal output and obtainable installation area are all needed to make sure proper flow meter choice.
What is the application? Is it groundwater, floor 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 capability, electromagnetic meters provide the very best accuracy and efficiency in each clear and soiled water purposes. With no transferring elements, weeds, trash and dirt may turn out to be entangled in the mechanical meter and easily circulate by way of the magnetic meter.
What are the minimal and most move ranges? When deciding on a mechanical propeller move meter, it is important to know the minimal and most flow ranges. A propeller circulate meter requires a minimum move rate to permit the bearing assembly and propeller to turn quick enough to ensure accurate readings. If the move price exceeds the mechanical meter’s ranking, the bearing assembly can undergo pricey damage and the meter will not operate correctly. Because there are not any shifting components to put on, electromagnetic flowmeters present higher accuracy over a wider move vary than mechanical meters.
What are the temperatures and pressures? Most flowmeters offered for this market are rated to operate at temperatures up to one hundred fifty psi and one hundred forty F. Most of these purposes fall inside that temperature and pressure vary. However, it is all the time clever to verify the appliance temperature and stress.
What is the dimensions of the line? This will help determine 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 type could additionally be the only option for larger line sizes.
Does the meter require a signal output? Some functions require the instrument to ship signals corresponding to pulses, 4-20mA, or Modbus. In some circumstances, the output is used to ship a signal to a distant telemetry system, allowing the irrigator to gather meter information remotely. Signal outputs on propeller circulate meters are optionally available and usually require the added price of a transmitter or special digital register that may provide the output. Most electromagnetic circulate meters have pulse sign output as a normal characteristic, making them “telemetry system ready” and might provide Modbus or 4-20mA output indicators for a small further cost.
How a lot house is on the market to install the meter? The straight pipe necessities for flow meters are costly by method of materials and set up labor. In the case of adding a new move meter to an present facility, there’s usually not sufficient space to accommodate the straight pipe sections required for accurate circulate measurement. Mechanical propeller meters require more space to put in as a end result of longer straight run requirements to make sure correct and accurate efficiency. Straightening vanes or rectifiers may be mounted in front of the propeller meter to shorten the straight pipe requirement, but can significantly improve the cost and set up labor involved. Typically, a regular full-bore electromagnetic circulate meter will fit well in tight areas and measure move accurately.
How important is accuracy?
In general, electromagnetic meters are more accurate than mechanical meters. Most electromagnetic move meters for irrigation provide +/-1% circulate over a wide range of flow charges with no head loss. The most typical mechanical meter used in irrigation is the propeller circulate meter. Propeller meters typically present +/-2% accuracy over a specified move vary and should experience some head loss. Because there aren’t any shifting parts to wear, electromagnetic meters can maintain accuracy throughout the lifetime of the meter.
What is your meter maintenance schedule?
As with most farm gear, all irrigation flow meters require attention in some unspecified time within the future.
Mechanical propeller meters have moving parts, such as propellers, bearings and mechanical registers, that may put on out, inflicting interruptions in measurement data and resulting in pricey repairs. The variety of components for mechanical gauges has elevated dramatically over time, and the price to repair an element is nearly as high as the price to exchange it. The commonplace guarantee on most mechanical propeller gauges is one year.
Electromagnetic meters do not have any breakable shifting components and maintenance is usually restricted to replacing the batteries. Many battery-powered electromagnetic flowmeters now supply a 5-year battery life, and the value of battery substitute is a fraction of the fee related to typical mechanical meter repairs. In addition, most electromagnetic flowmeters come commonplace with a two- to five-year guarantee, depending on the brand.
Electromagnetic or mechanical?
Electromagnetic circulate meters – also recognized as magnetic meters or just electrometers – operate 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 by way of the field generates a small amount of electrical vitality, just like a generator (more move = extra 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 show unit reveals the rate and the whole. Electromagnetic flow meters have been round for 60 years, simply not for irrigation. They are typically used for municipal and industrial, water and wastewater functions. In the final 15 years or so, magnetometer expertise has advanced so shortly that some can now be battery powered and are good for irrigation use. Most electromagnetic move meters come commonplace with many mechanical propeller flow meter options. Many instances, the general out-of-pocket cost of an electromagnetic flow meter shall be lower than the value of a mechanical propeller move meter. To ensure you get your money’s worth, consider what you want out of your flowmeter – added pulse output, straightened vanes (for tight area installations), excessive capability bearing assemblies, digital readout, data logging and any other options that could be required with a mechanical propeller meter – and then examine the worth to a battery-powered electromagnetic meter, which usually embrace all of the options you want as standard options. In the tip, electromagnetic flowmeters offer: greater accuracy over a wider move range, no moving elements to switch, sturdiness, no flow blockage, long battery life, low maintenance costs, longer warranties, and minimum straight pipe necessities for tight space installations. In addition to full bore, some electromagnetic flowmeters are now obtainable with saddle inserts for simple installation 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 generally identified as propeller move meters or simply propeller circulate meters, operate in accordance with the next principle – A propeller move meter consists of a rotating gadget, usually a spiral impeller, positioned in the air stream. The impeller rotates at a pace proportional to the speed of the circulate. As the water flows by way of 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 move charges could be learn on a mechanical or digital meter register. Although they work on the identical precept, these meters can be found in a selection of mounting configurations to meet the wants of the installer: saddle, flange, threaded finish, grooved finish, and so forth., making set up easier. Propeller meters provide a cost-effective move metering answer when solely mechanical flow and complete move are required. They usually work properly in clear water functions, however particles carrying water can damage transferring elements. While เพรสเชอร์เกจ had been as soon as essentially the most economical option for irrigation, that is usually no longer the case.
Apure is a designer and manufacturer of a broad range of flow metering, area instrumentation and course of analyzer merchandise. Since 2007, we have been providing innovative options for customers in irrigation, water therapy, groundwater, surface water and chemical processing functions. Our merchandise have a reputation for sturdiness and accuracy at aggressive prices and are bought by way of a network of home and worldwide distributors. We make use of just-in-time manufacturing methods and are extremely committed to continuous enchancment. Our focus on innovation, product value and buyer accessibility has led to almost 20 years of constant growth. Feel free to contact us for technical, citation or distributor help.
More articles on flowmeters:
Difference between flow meter and flow transmitter
Flow meter calibration
Useful information about circulate models
Mass flow rate vs volumetric circulate feee