Water move meters are required by national water businesses for brand spanking new and current agricultural irrigation functions to measure and handle surface water and groundwater use. There is a growing have to conserve 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 method irrigators use to find out the right frequency and length of watering. It includes understanding, making use of and then monitoring and controlling the necessary devices corresponding to soil moisture sensors, rain gauges and move meters to make sure efficient water use in crop manufacturing. This minimizes water waste and helps water conservation whereas maximizing crop well being and yield. Good irrigation planning practices embody figuring out how much water is used in every subject. A properly selected and put in move meter accurately measures the quantity of water utilized. Accurate circulate meters are an essential software for implementing a great irrigation program.
The two commonest kinds of irrigation move meters are electromagnetic meters and propeller meters. Propeller meters are mechanical flow meters which were 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 had been the best meter selection for irrigation – that is not the case at present. Expensive propeller meter repairs have led many meter users to search for other flow measurement choices. With advances in expertise, electromagnetic flowmeters are now out there for battery energy at remote irrigation areas. Many have long battery life, high accuracy in tight areas, and no shifting elements to wear out; they are unaffected by particles. Some electromagnetic flow meters are similar in value to mechanical propeller flow meters.
Use the following 4 suggestions to assist choose the right flow 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, move vary, temperature, strain, line measurement, desired sign output and available set up area are all necessary to ensure correct circulate meter choice.
What is the application? Is it groundwater, floor water, pond water or manure slurry lagoon water? While mechanical meters may be appropriate for clear water applications where the flow vary is throughout the meter’s functionality, electromagnetic meters offer the very best accuracy and performance in each clear and soiled water purposes. With no moving elements, weeds, trash and dust could become entangled within the mechanical meter and easily move by way of the magnetic meter.
What are the minimum and most flow ranges? When selecting a mechanical propeller move meter, it’s critical to know the minimum and maximum move ranges. A propeller flow meter requires a minimal flow rate to allow the bearing assembly and propeller to turn fast enough to make sure accurate readings. If the flow fee exceeds the mechanical meter’s score, the bearing assembly can suffer costly harm and the meter won’t operate correctly. Because there are no shifting components to put on, electromagnetic flowmeters present greater accuracy over a wider flow range than mechanical meters.
What are the temperatures and pressures? Most flowmeters supplied for this market are rated to function at temperatures up to a hundred and fifty psi and 140 F. Most of those functions fall inside that temperature and pressure range. However, it’s at all times wise to substantiate the applying temperature and pressure.
What is the dimensions of the line? This will assist decide the fashion of meter. Both electromagnetic and mechanical gauges are available in full bore and plug-in configurations. For cost and ease of set up, the plug-in fashion may be your finest option for bigger line sizes.
Does the meter require a sign output? Some functions require the instrument to send 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 data remotely. Signal outputs on propeller circulate meters are optionally available and normally require the added value of a transmitter or special digital register that can present the output. Most electromagnetic move meters have pulse signal output as a regular function, making them “telemetry system ready” and can provide Modbus or 4-20mA output signals for a small additional price.
How much area is out there to install the meter? The straight pipe necessities for move meters are expensive by means of supplies and installation labor. In the case of adding a new move meter to an present facility, there is usually not sufficient house to accommodate the straight pipe sections required for correct flow measurement. Mechanical propeller meters require more space to put in as a end result of longer straight run requirements to ensure correct and correct efficiency. Straightening vanes or rectifiers could be mounted in front of the propeller meter to shorten the straight pipe requirement, but can considerably improve the fee and set up labor concerned. Typically, a standard full-bore electromagnetic move meter will match well in tight spaces and measure move accurately.
How essential is accuracy?
In general, electromagnetic meters are more correct than mechanical meters. Most electromagnetic circulate meters for irrigation provide +/-1% move over a wide range of flow charges with no head loss. The commonest mechanical meter used in irrigation is the propeller move meter. Propeller meters usually provide +/-2% accuracy over a specified flow range and will experience some head loss. Because there are เกจวัดแรงดันน้ำราคา moving parts 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 at some point.
Mechanical propeller meters have shifting elements, corresponding to propellers, bearings and mechanical registers, that can put on out, causing interruptions in measurement information and resulting in pricey repairs. The variety of parts for mechanical gauges has elevated dramatically through the years, and the cost to restore a part is almost as excessive as the price to exchange it. The commonplace warranty on most mechanical propeller gauges is one 12 months.
Electromagnetic meters wouldn’t have any breakable transferring parts and upkeep is usually restricted to changing the batteries. Many battery-powered electromagnetic flowmeters now offer a 5-year battery life, and the price of battery replacement is a fraction of the price related to typical mechanical meter repairs. In addition, most electromagnetic flowmeters come normal with a two- to five-year warranty, depending on the brand.
Electromagnetic or mechanical?
Electromagnetic move meters – also recognized as magnetic meters or simply electrometers – operate according to Faraday’s Law – if a conductive fluid (such as irrigation water) passes by way of a magnetic area, a small voltage is generated. The movement of the conductive fluid by way of the field generates a small amount of electrical energy, identical to a generator (more flow = extra voltage). An electron coil positioned on the outside of the fluid is instantly energized. The magnetic area passes through the fluid at proper angles, the electrodes measure the changing voltage, and the display unit reveals the speed and the entire. Electromagnetic flow meters have been around for 60 years, simply not for irrigation. They are sometimes used for municipal and industrial, water and wastewater applications. In the last 15 years or so, magnetometer know-how has evolved so quickly that some can now be battery powered and are excellent for irrigation use. Most electromagnetic circulate meters come standard with many mechanical propeller flow meter choices. Many occasions, the general out-of-pocket price of an electromagnetic move meter might be less than the value of a mechanical propeller circulate meter. To ensure you get your money’s worth, contemplate what you need out of your flowmeter – added pulse output, straightened vanes (for tight house installations), excessive capacity bearing assemblies, digital readout, data logging and any other options that may be required with a mechanical propeller meter – and then compare the worth to a battery-powered electromagnetic meter, which generally embody all of the options you want as standard options. In the tip, electromagnetic flowmeters offer: larger accuracy over a wider flow range, no shifting elements to replace, durability, no circulate blockage, long battery life, low maintenance prices, longer warranties, and minimum straight pipe requirements for tight house installations. In addition to full bore, some electromagnetic flowmeters are now available 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 known as propeller circulate meters or simply propeller move meters, operate according to the following precept – A propeller move meter consists of a rotating system, usually a spiral impeller, located in the air stream. The impeller rotates at a velocity proportional to the rate of the flow. As the water flows by way of the pipe, it rotates the propeller. The rotational motion is then transmitted to the top of the meter by way of a gear or drive cable. The instantaneous and total circulate charges could be read on a mechanical or digital meter register. Although they work on the same principle, these meters can be found in quite a lot of mounting configurations to fulfill the needs 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 solely mechanical flow and whole move are required. They sometimes work well in clear water purposes, however debris carrying water can damage moving parts. While mechanical propeller move meters have been once the most economical possibility for irrigation, that is normally not the case.
Apure is a designer and producer of a variety of circulate metering, subject instrumentation and course of analyzer products. Since 2007, we’ve been offering innovative solutions for customers in irrigation, water treatment, groundwater, surface water and chemical processing applications. Our products have a reputation for durability and accuracy at competitive costs and are bought via a community of home and worldwide distributors. We employ just-in-time manufacturing strategies and are highly dedicated to continuous improvement. Our focus on innovation, product worth and customer accessibility has led to just about twenty years of consistent development. Feel free to contact us for technical, citation or distributor assist.
More articles on flowmeters:
Difference between circulate meter and move transmitter
Flow meter calibration
Useful information about flow models
Mass circulate price vs volumetric move feee
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Water flow meters are required by national water agencies for new and existing agricultural irrigation purposes to measure and handle surface water and groundwater use. There is a rising have to preserve sources and stability the water wants of agriculture with different industries, and as the population continues to develop, residential use is driving water conservation in unprecedented methods.
Irrigation scheduling is the process irrigators use to find out the correct frequency and duration of watering. It includes understanding, applying after which monitoring and controlling the necessary devices similar to 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 figuring out how a lot water is used in every subject. A properly selected and put in move meter precisely measures the amount of water utilized. Accurate flow meters are an essential tool for implementing a good irrigation program.
The two commonest types of irrigation move meters are electromagnetic meters and propeller meters. Propeller meters are mechanical move meters which were 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 ago, many individuals thought that propeller meters have been the most effective meter choice 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 obtainable for battery power at remote irrigation locations. Many have long battery life, excessive accuracy in tight areas, and no shifting elements to wear out; they are unaffected by particles. Some electromagnetic circulate meters are comparable in price to mechanical propeller circulate meters.
Use the following 4 tips to help choose the proper circulate 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, move vary, temperature, strain, line measurement, desired sign output and obtainable installation space are all needed to make sure proper move meter choice.
What is the application? Is it groundwater, surface water, pond water or manure slurry lagoon water? While mechanical meters may be suitable for clear water applications where the flow vary is inside the meter’s functionality, electromagnetic meters supply the highest accuracy and performance in each clear and soiled water purposes. With no transferring components, weeds, trash and dirt could turn into entangled within the mechanical meter and easily circulate through the magnetic meter.
What are the minimal and most flow ranges? When selecting a mechanical propeller circulate meter, it’s critical to know the minimal and most flow ranges. A propeller circulate meter requires a minimum move rate to allow the bearing meeting and propeller to show quick enough to ensure correct readings. If the move fee exceeds the mechanical meter’s score, the bearing assembly can undergo costly harm and the meter is not going to function correctly. Because there are not any transferring components to put on, electromagnetic flowmeters present larger accuracy over a wider circulate range than mechanical meters.
What are the temperatures and pressures? Most flowmeters supplied for this market are rated to operate at temperatures up to one hundred fifty psi and 140 F. Most of these purposes fall inside that temperature and strain range. However, it is at all times wise to verify the appliance temperature and strain.
What is the size of the line? This will assist determine the type 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 also be your greatest option for larger line sizes.
Does the meter require a sign output? Some purposes require the instrument to ship signals such as pulses, 4-20mA, or Modbus. In some circumstances, 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 elective and often require the added cost of a transmitter or particular digital register that may provide the output. Most electromagnetic circulate meters have pulse sign output as a regular function, making them “telemetry system ready” and can present Modbus or 4-20mA output alerts for a small extra cost.
How much house is on the market to install the meter? The straight pipe requirements for circulate meters are costly by method of materials and set up labor. In the case of including a new circulate meter to an present facility, there’s often not enough space to accommodate the straight pipe sections required for correct move measurement. Mechanical propeller meters require more space to put in as a end result of longer straight run requirements to ensure proper and accurate performance. Straightening vanes or rectifiers can be mounted in front of the propeller meter to shorten the straight pipe requirement, however can considerably improve the cost and set up labor involved. Typically, a normal full-bore electromagnetic move meter will match nicely in tight spaces and measure circulate precisely.
How necessary is accuracy?
In common, electromagnetic meters are extra accurate than mechanical meters. Most electromagnetic flow meters for irrigation present +/-1% move over a variety of flow charges with no head loss. The most typical mechanical meter used in irrigation is the propeller move meter. Propeller meters usually present +/-2% accuracy over a specified move vary and may expertise some head loss. Because there are not any shifting elements to put on, electromagnetic meters can maintain accuracy all through the lifetime of the meter.
What is your meter maintenance schedule?
As with most farm equipment, all irrigation flow meters require attention in some unspecified time in the future.
Mechanical propeller meters have transferring components, corresponding to propellers, bearings and mechanical registers, that may wear out, causing interruptions in measurement knowledge and leading to costly repairs. The number of parts for mechanical gauges has increased dramatically through the years, and the price to restore a component is nearly as high as the price to switch it. The commonplace warranty on most mechanical propeller gauges is one 12 months.
Electromagnetic meters don’t have any breakable shifting components and upkeep is normally restricted to changing 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 normal 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 – function based on Faraday’s Law – if a conductive fluid (such as irrigation water) passes by way of a magnetic field, a small voltage is generated. The movement of the conductive fluid via the sphere generates a small quantity of electrical power, just like a generator (more move = more voltage). An electron coil positioned 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 show unit exhibits the rate and the entire. Electromagnetic move meters have been around for 60 years, just not for irrigation. They are typically used for municipal and industrial, water and wastewater applications. In the final 15 years or so, magnetometer know-how has evolved so quickly that some can now be battery powered and are excellent for irrigation use. Most electromagnetic circulate meters come standard with many mechanical propeller flow meter options. Many occasions, the overall out-of-pocket value of an electromagnetic flow meter shall be lower than the price of a mechanical propeller circulate meter. To make positive you get your money’s worth, consider what you need out of your flowmeter – added pulse output, straightened vanes (for tight space installations), excessive capacity bearing assemblies, digital readout, knowledge logging and another options which could be required with a mechanical propeller meter – and then compare the worth to a battery-powered electromagnetic meter, which generally include all of the choices you want as normal features. In the end, electromagnetic flowmeters provide: greater accuracy over a wider circulate vary, no transferring parts to exchange, durability, no flow blockage, long battery life, low upkeep costs, longer warranties, and minimal straight pipe requirements for tight area installations. In addition to full bore, some electromagnetic flowmeters at the moment are obtainable with saddle inserts for easy 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 known as propeller move meters or just propeller move meters, operate based on the next principle – A propeller flow meter consists of a rotating device, usually a spiral impeller, located in the air stream. The impeller rotates at a velocity proportional to the velocity of the circulate. As the water flows via the pipe, it rotates the propeller. The rotational motion is then transmitted to the pinnacle of the meter by way of a gear or drive cable. The instantaneous and complete move rates could be read on a mechanical or digital meter register. Although they work on the identical principle, these meters can be found in a wide range of mounting configurations to meet the wants of the installer: saddle, flange, threaded finish, grooved end, and so forth., making set up easier. Propeller meters provide an economical move metering resolution when only mechanical flow and whole flow are required. They usually work nicely in clear water purposes, however debris carrying water can damage transferring elements. While mechanical propeller circulate meters were as quickly as the most economical choice for irrigation, that is often not the case.
Apure is a designer and producer of a variety of move metering, subject instrumentation and course of analyzer products. Since 2007, we have been offering 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 sold via a community of domestic 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 twenty years of constant development. Feel free to contact us for technical, citation or distributor help.
More articles on flowmeters:
Difference between circulate meter and circulate transmitter
Flow meter calibration
Useful details about flow items
Mass circulate fee vs volumetric move feee