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Select right irrigation circulate meter

Water circulate meters are required by nationwide water businesses for new and existing agricultural irrigation functions to measure and manage floor water and groundwater use. There is a rising have to preserve sources and balance 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 method irrigators use to determine the proper frequency and period of watering. It entails understanding, making use of and then monitoring and controlling the mandatory instruments corresponding to soil moisture sensors, rain gauges and move meters to ensure environment friendly water use in crop manufacturing. This minimizes water waste and helps water conservation while maximizing crop health and yield. Good irrigation planning practices include understanding how much water is utilized in every area. A correctly chosen and installed move meter precisely measures the amount of water applied. Accurate flow meters are an essential software for implementing a great irrigation program.
The two most typical forms of irrigation circulate meters are electromagnetic meters and propeller meters. Propeller meters are mechanical move meters which have been around in irrigation since 1919 and subsequently make up a big portion of the put in base of irrigation water meters. Fifteen years in the past, many people thought that propeller meters had been the best meter alternative for irrigation – that isn’t the case today. Expensive propeller meter repairs have led many meter users to search for other circulate measurement options. With advances in know-how, electromagnetic flowmeters are now out there for battery power at distant irrigation areas. Many have lengthy battery life, high accuracy in tight areas, and no moving parts to put on down; they’re unaffected by particles. Some electromagnetic move meters are comparable in value to mechanical propeller flow meters.
Use the following four ideas to assist choose 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, pressure, line measurement, desired signal output and obtainable set up house are all needed to make sure proper flow 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 the place the move range is inside the meter’s functionality, electromagnetic meters provide the very best accuracy and efficiency in each clear and dirty water applications. With no shifting parts, weeds, trash and mud might become entangled in the mechanical meter and simply move through the magnetic meter.
What are the minimal and maximum circulate ranges? When choosing a mechanical propeller circulate meter, it is critical to know the minimum and most move ranges. pressure gauge requires a minimum flow rate to permit the bearing meeting and propeller to turn quick enough to ensure accurate readings. If the flow fee exceeds the mechanical meter’s ranking, the bearing assembly can suffer expensive damage and the meter won’t operate properly. Because there are no moving parts to wear, electromagnetic flowmeters present larger accuracy over a wider move vary than mechanical meters.
What are the temperatures and pressures? Most flowmeters supplied for this market are rated to operate at temperatures up to 150 psi and 140 F. Most of these functions fall inside that temperature and strain vary. However, it’s always sensible 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 are available in full bore and plug-in configurations. For cost and ease of installation, the plug-in style may be the best choice for bigger line sizes.
Does the meter require a signal output? Some purposes require the instrument to ship alerts such as pulses, 4-20mA, or Modbus. In some instances, the output is used to ship a sign to a remote telemetry system, allowing the irrigator to gather meter knowledge remotely. Signal outputs on propeller circulate meters are elective and often require the added value of a transmitter or special digital register that may present the output. Most electromagnetic flow meters have pulse signal output as a standard feature, making them “telemetry system ready” and might present Modbus or 4-20mA output indicators for a small additional price.
How much space is available to install the meter? The straight pipe requirements for flow meters are expensive in phrases of supplies and installation labor. In the case of including a model new move meter to an current facility, there might be typically not sufficient space to accommodate the straight pipe sections required for accurate move measurement. Mechanical propeller meters require more room to put in as a outcome of longer straight run requirements to ensure proper and accurate performance. Straightening vanes or rectifiers may be mounted in front of the propeller meter to shorten the straight pipe requirement, however can significantly increase the fee and installation labor concerned. Typically, a regular full-bore electromagnetic circulate meter will match nicely in tight areas and measure flow precisely.
How important is accuracy?

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

As with most farm gear, all irrigation circulate meters require attention sooner or later.
Mechanical propeller meters have moving components, similar to propellers, bearings and mechanical registers, that can put on out, causing interruptions in measurement knowledge and leading to pricey repairs. The variety of elements for mechanical gauges has increased dramatically over time, and the fee to repair a part is type of as high as the fee to replace it. The normal warranty on most mechanical propeller gauges is one 12 months.
Electromagnetic meters don’t have any breakable transferring elements and maintenance is usually restricted to changing the batteries. Many battery-powered electromagnetic flowmeters now offer a 5-year battery life, and the price 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 warranty, relying on the model.
Electromagnetic or mechanical?

Electromagnetic move 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 subject, a small voltage is generated. The movement of the conductive fluid via the sector generates a small quantity of electrical energy, 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 changing voltage, and the display unit exhibits the rate and the whole. Electromagnetic move meters have been around for 60 years, simply not for irrigation. They are typically used for municipal and industrial, water and wastewater functions. In the last 15 years or so, magnetometer technology has evolved so rapidly that some can now be battery powered and are good for irrigation use. Most electromagnetic flow meters come normal with many mechanical propeller flow meter choices. Many occasions, the overall out-of-pocket price of an electromagnetic circulate meter might be less than the price of a mechanical propeller move meter. To ensure you get your money’s worth, think about what you need out of your flowmeter – added pulse output, straightened vanes (for tight area installations), excessive capacity bearing assemblies, digital readout, knowledge logging and some other options which might be required with a mechanical propeller meter – and then evaluate the worth to a battery-powered electromagnetic meter, which typically embody all of the options you need as commonplace features. In the end, electromagnetic flowmeters offer: higher accuracy over a wider flow vary, no moving components to switch, sturdiness, no circulate blockage, lengthy battery life, low maintenance costs, longer warranties, and minimal straight pipe necessities for tight house installations. In addition to full bore, some electromagnetic flowmeters at the moment are obtainable with saddle inserts for straightforward 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 often identified as propeller move meters or just propeller flow meters, operate according to the next principle – A propeller flow meter consists of a rotating system, often a spiral impeller, positioned within the air stream. The impeller rotates at a speed proportional to the rate of the move. As the water flows via 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 rates could be learn 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 simpler. Propeller meters provide a cost-effective move metering answer when only mechanical flow and total move are required. They sometimes work nicely in clear water applications, however particles carrying water can damage shifting components. While mechanical propeller circulate meters have been once the most economical possibility for irrigation, this is often now not the case.
Apure is a designer and producer of a wide range of circulate metering, field instrumentation and process analyzer products. Since 2007, we’ve been offering progressive options for customers in irrigation, water treatment, groundwater, floor water and chemical processing purposes. Our products have a reputation for durability and accuracy at competitive prices and are bought via a community of domestic and international distributors. We make use of just-in-time manufacturing strategies and are highly committed to continuous improvement. เกจวัดแรงดัน on innovation, product value and customer accessibility has led to nearly 20 years of consistent development. Feel free to contact us for technical, quotation or distributor support.
More articles on flowmeters:
Difference between move meter and circulate transmitter

Flow meter calibration

Useful details about move units

Mass circulate rate vs volumetric circulate pricee
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Water move meters are required by nationwide water companies for brand spanking new and present agricultural irrigation purposes to measure and handle floor water and groundwater use. There is a growing must preserve sources and balance the water wants of agriculture with different industries, and as a outcome of the inhabitants continues to grow, residential use is driving water conservation in unprecedented methods.
Irrigation scheduling is the process irrigators use to discover out the correct frequency and duration of watering. It includes understanding, applying and then monitoring and controlling the mandatory 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 embody figuring out how much water is utilized in every subject. A properly chosen and put in circulate meter accurately measures the amount of water applied. Accurate flow meters are an essential tool for implementing a great irrigation program.
The two most common types of irrigation move meters are electromagnetic meters and propeller meters. Propeller meters are mechanical move meters which were round in irrigation since 1919 and subsequently make up a big portion of the installed base of irrigation water meters. Fifteen years in the past, many individuals thought that propeller meters had been the best meter alternative for irrigation – that’s not the case at present. Expensive propeller meter repairs have led many meter users to search for different flow measurement options. With advances in know-how, electromagnetic flowmeters at the second are available for battery energy at distant irrigation places. Many have long battery life, excessive accuracy in tight areas, and no shifting parts to wear out; they’re unaffected by debris. Some electromagnetic circulate meters are comparable in price to mechanical propeller move meters.
Use the next 4 suggestions to help choose the right circulate meter for irrigation.
Table of Contents

What is the application?

How important is accuracy?

What is your meter maintenance schedule?

Electromagnetic or mechanical?

What is the application?

Knowledge of the fluid medium, flow range, temperature, stress, line size, desired signal output and out there installation space are all necessary to ensure correct circulate 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 functions where the move range is inside the meter’s capability, electromagnetic meters supply the highest accuracy and performance in both clear and dirty water purposes. With no transferring components, weeds, trash and dust might turn out to be entangled within the mechanical meter and simply circulate through the magnetic meter.
What are the minimum and maximum move ranges? When choosing a mechanical propeller circulate meter, it’s important to know the minimum and maximum flow ranges. A propeller flow meter requires a minimum move fee to permit the bearing meeting and propeller to show quick sufficient to ensure correct readings. If the flow fee exceeds the mechanical meter’s rating, the bearing assembly can undergo expensive injury and the meter will not operate correctly. Because there are not any transferring parts to wear, electromagnetic flowmeters provide 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 applications fall within that temperature and stress range. However, it is at all times clever to verify the applying temperature and strain.
What is the size 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 installation, the plug-in style could also be the best choice for larger line sizes.
Does the meter require a sign output? Some purposes require the instrument to ship alerts corresponding to pulses, 4-20mA, or Modbus. In some circumstances, the output is used to send a signal to a distant telemetry system, permitting the irrigator to gather meter information remotely. Signal outputs on propeller circulate meters are optional and normally require the added value of a transmitter or particular digital register that can provide the output. Most electromagnetic circulate meters have pulse signal output as a standard function, making them “telemetry system ready” and might provide Modbus or 4-20mA output signals for a small additional price.
How much house is available to install the meter? The straight pipe requirements for circulate meters are costly when it comes to supplies and set up labor. In the case of including a new flow meter to an current facility, there could be typically not enough space to accommodate the straight pipe sections required for correct flow measurement. Mechanical propeller meters require more space to put in due to the longer straight run necessities to make sure proper and accurate performance. Straightening vanes or rectifiers could be mounted in entrance of the propeller meter to shorten the straight pipe requirement, but can considerably enhance the price and installation labor involved. Typically, a standard full-bore electromagnetic move meter will match properly in tight areas and measure move accurately.
How essential is accuracy?

In basic, electromagnetic meters are extra correct than mechanical meters. Most electromagnetic move meters for irrigation provide +/-1% circulate over a variety of circulate charges with no head loss. The most typical mechanical meter utilized in irrigation is the propeller flow meter. Propeller meters usually present +/-2% accuracy over a specified circulate vary and will experience some head loss. Because there are not any shifting elements to wear, electromagnetic meters can keep accuracy all through 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 elements, similar to propellers, bearings and mechanical registers, that may put on out, causing interruptions in measurement information and resulting in costly repairs. The number of components for mechanical gauges has elevated dramatically over time, and the cost to restore an element is almost as excessive as the cost to replace it. The normal guarantee on most mechanical propeller gauges is one yr.
Electromagnetic meters wouldn’t have any breakable transferring parts and maintenance is usually limited to replacing the batteries. Many battery-powered electromagnetic flowmeters now supply a 5-year battery life, and the price of battery substitute is a fraction of the price associated with 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 circulate meters – also called magnetic meters or just electrometers – function based on 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 placed on the surface of the fluid is immediately energized. The magnetic subject passes via the fluid at right angles, the electrodes measure the altering voltage, and the display unit shows the speed and the total. Electromagnetic flow 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 final 15 years or so, magnetometer know-how has advanced so quickly that some can now be battery powered and are perfect for irrigation use. Most electromagnetic move meters come standard with many mechanical propeller circulate meter options. Many instances, the overall out-of-pocket cost of an electromagnetic flow meter will be less than the price of a mechanical propeller circulate meter. To ensure 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 capacity bearing assemblies, digital readout, information logging and another choices that may be required with a mechanical propeller meter – after which evaluate the price to a battery-powered electromagnetic meter, which typically embody all the choices you need as standard options. In the end, electromagnetic flowmeters offer: higher accuracy over a wider move vary, no shifting parts to replace, durability, no circulate blockage, lengthy battery life, low upkeep costs, longer warranties, and minimal straight pipe necessities for tight area installations. In addition to full bore, some electromagnetic flowmeters at the moment are available with saddle inserts for easy 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 just propeller circulate meters, operate in accordance with the next precept – A propeller flow meter consists of a rotating device, usually a spiral impeller, positioned in 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 movement is then transmitted to the top of the meter via a gear or drive cable. The instantaneous and total move charges can 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 needs of the installer: saddle, flange, threaded finish, grooved end, and so forth., making set up easier. Propeller meters provide a cost-effective move metering answer when solely mechanical flow and total circulate are required. They usually work well in clear water purposes, however particles carrying water can harm moving parts. While mechanical propeller circulate meters were once probably the most economical option for irrigation, this is often now not the case.
Apure is a designer and producer of a variety of flow metering, area instrumentation and process analyzer products. Since 2007, we have been offering innovative options for users in irrigation, water therapy, groundwater, floor water and chemical processing purposes. Our merchandise have a status for durability and accuracy at competitive prices and are offered via a community of home and worldwide distributors. We employ just-in-time manufacturing methods and are highly dedicated to continuous enchancment. Our focus on innovation, product worth and customer accessibility has led to just about twenty years of constant progress. Feel free to contact us for technical, quotation or distributor help.
More articles on flowmeters:
Difference between flow meter and flow transmitter

Flow meter calibration

Useful information about move units

Mass move fee vs volumetric move ratee

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