Electromagnetic flowmeters, also known as magnetic flow meters or simply mag meters, offer a number of practical advantages over traditional flow metering technologies which employ mechanical measuring techniques.

The simple construction of our electromagnetic flow meters is the key to these advantages. A SmartMeasurement magnetic flow meter does not contain any moving parts, rotating gears or turbines, or bearings. Instead, it relies on two electrodes to measure the density of the induced magnetic field that results from an electrically conductive fluid, such as water, flowing through a pipe. The density of the magnetic field is directly proportional to the fluid velocity of the flowing liquid.

For a more detailed discussion of the operating principle of our electromagnetic flow meter designs, please visit our Magnetic Measuring Principle page.

Request a quote today, or contact SmartMeasurement for more information on our electromagnetic flow meter models.

High Precision Mag Meter Technology

Specific advantages that our magnetic flow meter technology provides include:

• High accuracy
• Low cost
• Little to no pressure loss
• Readings that are unaffected by changes in density or viscosity
• No susceptibility to bearing wear or other mechanical wear-and-tear issues

Because the only wetted components in a SmartMeasurement electromagnetic flow meter are the electrodes and the liner, these components can be fabricated from a variety of materials to make the mag meter compatible with virtually any electrically conductive fluid, including aggressive acids.

The only real limitation of the electromagnetic flow meter is that the measured fluid media must be electrically conductive (> 5μS/cm). Non-conductive fluids, such as oil and other petroleum-based fluids, cannot be measured with mag meter technology.

Magnetic Flow Meter Options

SmartMeasurement offers a comprehensive line of magnetic flow meters, including:

• General purpose mag meter
• Battery-powered mag meter
• High pressure mag meter
• Mag meter with integrated BTU measurement
• Ceramic-lined mag meter
• Insertion mag meter

This wide array of product offerings allows users to select a SmartMeasurement magnetic flow meter for applications in many different industries, from factory automation and food and beverage processing to mining, municipal/wastewater treatment, and pulp and paper production.

Ready to order a magnetic flow meter for your application? Request a quote today. Questions?  Contact the experts at SmartMeasurement to learn more.

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Technology	Model/ Series	Gas Flow	Liquid Flow	Steam Flow	Line Size	Temperature	Pressure	Viscosity	Accuracy	Considerations
Magnetic	ALMAG									Conductive fluids ONLY

Request a quote on magnetic flow meters, or contact SmartMeasurement™ to learn more. Learn about Magnetic Measuring Principles.

Magnetic Flow Meters

ALMAG Family
Technology	Model	Line Sizes	Pressures	Temperatures	Process Connections	Accuracy	Outputs	Special Features	Approvals	Display Types
Process Industry	General Purpose Mag Meter ALMAGWP	⅜''-110''     (6-2800mm)	580 psig (4.0Mpa) for line sizes up to 3'' (80 mm)	5~+160 °F( -20~ +70 °C) - Integral,(-40 ~ +360°F (180°C) - Remote	Wafer, ANSI or DIN Flanges, Insertion-Type	std - ±0.5% opt - ±0.2%	Pulse, 4-20mA, MODBUS, HART	Conductivity > 5 µS/cm, velocity 0.2 - 12 m/s	CE, ExdIIBT3~T6 (ATEX)	Integral and Remote
Battery	Battery-Powered Mag Meter ALMAGBAT	⅛'' - 24'' (3-600mm)	580 psig (4.0Mpa) for line sizes up to 3'' (80 mm)	Up to 300 °F (150 °C), dependent upon selected liner material	ANSI or DIN Flanges	±0.5%,	Pulse, 4-20mA, RS485, HART	Battery Powered (3.6 VDC)	CE, ExdIIBT3~T6	Integral
Energy	Energy/BTU Mag Meter ALMAGEG	⅛'' - 24'' (3-600mm)	580 psig (4.0Mpa) for line sizes up to 3'' (80 mm)	Up to 300 °F (150 °C), dependent upon selected liner material	ANSI or DIN Flanges	±0.5%	Pulse, 4-20mA, RS485	BUT, Energy Calculation	CE, ExdIIBT3~T6	Integral and Remote
High Pressure	High Pressure Mag Meter ALMAGHP	1'' - 8'' (25-200 mm)	6000 psig (42Mpa) - for all available sizes	Up to 300 °F (150 °C), dependent upon selected liner material	ANSI or DIN Flanges	std - ±0.5%, opt - ±0.2%	Pulse, 4-20mA, RS485, HART	Designed for high pressure applications - 6000 psig  (42 Mpa)	CE, ExdIIBT3~T6 (CQST)	Integral and Remote
Insertion	Insertion-Style Mag Meter ALMAGIS	12'' - 120'' (300-3000 mm)	230 PSIG (16 barg)	160 °F (70 °C)	ANSI or DIN Flanges	±2.5%	Pulse, 4-20mA, RS485, HART	Insertion meter designed for large pipes	CE	Integral and Remote

Need help?  Contact SmartMeasurement today and get all of your questions answered.

Ultrasonic flow meters offer a number of advantages over other flow measuring technologies. The most distinct of these advantages is the non-invasive nature of ultrasonic measuring technique: fluid flow can be measured by clamping a pair of transducers onto the outside of the pipe without contacting the measured fluid.

This installation method, unique among flow metering technologies, allows ultrasonic flow meters to be used in applications where the process cannot be shut down and/or the pipe cannot be cut for installation. Clamp on flow meters also cause no pressure drop, suffer no mechanical wear and tear, allow for bidirectional measurement, and provide the ability to pass unlimited solids past the meter without damage.

Fluid velocity is measured by sending an ultrasonic pulse from an upstream transducer to a downstream transducer and back again. The measured difference in the amount of time that each pulse takes to traverse the pipe is directly proportional to the mean fluid velocity. SmartMeasurement’s ultrasonic flowmeters use this measured velocity to calculate the liquid flow rate based on user-entered information about the process application.

For a more detailed discussion of our ultrasonic flowmeter’s principles of operation, please visit our Ultrasonic Measuring Principle page.


SmartMeasurement’s Ultrasonic Flow Meters

These instruments can be used in a variety of applications in industries ranging from oil & gas and municipal/wastewater to building automation and factory automation to solar and semicon.

Request a quote on ultrasonic flow meters for your application, or contact SmartMeasurement to learn more.

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Alsonic Family		Liquids	Transducer Styles			Temperature	Comparison
Technology	Model	Limitations	Clamp-on	Inline	Insertion	Range	Feature
Graphic Permanent Ultrasonic Meter	Alsonic DSP	< 30% particles or bubbles	20~6000mm	25-100mm	100-3000mm	(0.02-12mps) (-40 to +120℃)	High technology, any liquids
Graphic Portable Ultrasonic Meter	Alsonic DSPPL	< 30% particles or bubbles	20~6000mm	Not available	Not available	(0.02-12mps) (-40 to +120℃)	High technology, any liquids
Open Channel Ultrasonic Meter	Alsonic AVM	< 30% particles or bubbles	20~6000mm	Not available	unlimited	(0.02-12mps) (-40 to +120℃)	High technology, any liquids
Handheld Ultrasonic Meters	Alsonic HL & DHL	< 2% particles or bubbles	15~6000mm	Not available	Not available	(0.1 ~ +/- 12 m/s) (-40 to +160℃)	Low technology, clean liquids, data logger (2G SD card with DHL)
Economical Permanent Ultrasonic Meter	Alsonic FX	< 2% particles or bubbles	15~6000mm	15~2000mm	100-3000mm	(0.1 ~ +/- 12 m/s) (-40 to +160℃)	Low technology, clean liquids
Thermal Energy Ultrasonic Meter	Alsonic EG	< 2% particles or bubbles	15~6000mm	15~2000mm	100-3000mm	(0.1 ~ +/- 12 m/s) (-40 to +160℃)	Low technology, clean liquids
Inline Thermal Energy Ultrasonic Meter	Alsonic BAEG	< 2% particles or bubbles		15~40mm	15~300mm	(0.1 ~ +/- 10 m/s) (-40 to +90℃)	Low technology, clean liquids

Vortex meters are one of the few flow measuring technologies that can measure all three phases of a fluid; gas, liquid and steam.  This technology provides a cost-effective, reliable, low maintenance solution for many flow measurement applications. It has no moving parts, therefore no routine maintenance or cleaning is required. The vortex flowmeter can measure also measure wet and/or dirty gases. Vortex flow sensing technology relies on measuring the number of vortex pulses generated by a bluff body immersed in the flow stream. A bluff body is machined inside the vortex flow meter; as flow pass through this bluff body, vortices are generated in either side of the bluff body. The flow rate can be determined by measuring the number of vortices.  For a more detailed discussion of the principle of operation, please go to: http://www.smartmeasurement.com/flow-meters/vortex/measuring-principle.

The design of Smartmeasurement^TM‘ s ALVT vortex flowmeter allows for extremely wide turndowns while maintaining an almost unlimited upper end as well as a high pressure rating.   The ALVT can be configured in inline styles with both NPT and flanged connections or as an insertion meter with optional hot-tapped ball valve mounting for installation and/or removal of the instrument without shutting down the process.  Our ALVT-MASS multivariable vortex flow meter incorporates an RTD temperature sensor and a solid state pressure transducer that allows the mass flow rate of steam, gases and liquids to be measured and displayed directly on the meter’s display. Please see the Vortex flowmeter matrix below to view all available options.

Turbine Flowmeters measure volumetric flow, where flow passing through the tube is measured as a function of the mean velocity of the streaming fluid.   Turbine flow meters may be configured to measure either gas or liquid flow rates. A low mass turbine wheel carried axially in the tube is rotated by the fluid; the RPM of the turbine wheel is directly proportional to the mean fluid velocity within the tube. For a more detailed discussion of the principle of operation please go to: http://www.smartmeasurement.com/flow-meters/turbine/measuring-principle

SmartmeasurementTM’ s ALTM turbine flow meters come in sizes ranging from 15-300mm (½” to 12”) and feature a wide turn-down with minimum uncertainty and a very repeatable output.  The ALTM is excellent for precise measurement of instantaneous flow of low-viscosity fluids such as tap and demineralized water, fuels, liquefied gases, light fuel oils, solvents, and pharmaceutical fluids. Please see the turbine flowmeter matrix below to select the best meter for your application.

Energy Flow Meters

Energy Flow Meters Overview: Flowmeters that perform energy measurement consist of a flowmeter with integrated temperature measurement to measure both supply and return temperature and then calculate thermal energy in units of BTUs. In addition to providing direct BTU measurement, these flowmeters also can display liquid flow rate and process temperature. The temperature measurement is typically achieved via use of precision RTD elements while the liquid flow rate measurement can be done with an electromagnetic flowmeter, a turbine flowmeter, an ultrasonic flowmeter, or a variety of other flowmeter technologies.

SmartMeasurement^TM offers Energy flow meters that employ ultrasonic and magnetic flow measurement technologies in order to provide users with a degree of flexibility in selecting the best product for their specific application.  For non-intrusive energy measurement, the ALSONIC-EG provides highly accurate energy measurement for applications including treated water with low electrical conductivity and buildings where the air-conditioning can’t be turned off to install the meter.  The ALSONIC-EG enables retrofitting of transducers under pressure with a clamp-on non-intrusive installation method. For applications where there are particulates or bubbles entrained in the fluid, the ALMAG-EG, which makes use of a Mag Meter to measure the liquid flow, is the instrument of choice.  All SmartMeasurement BTU Flowmeters are available with optional Mbus, BACNET, MODBUS, and Profibus communication protocols.

Thermal meters measure gas mass flow directly without the need for additional need pressure, temperature and/or density monitoring.  They operate either by introducing a known amount of heat into the flowing stream and measuring an associated temperature change, or by maintaining a probe at a constant temperature and measuring the energy required to do so.  Thermal mass flowmeters include two temperature sensors and an electric heater between them. The heater can protrude into the fluid stream or may be external to the pipe. By eliminating temperature changes in the process, any heat transfer within the flow stream is directly proportional to its mass flow.  For a more complete description of thermal mass flow technologies please go to; http://www.smartmeasurement.com/flow-meters/thermal/measuring-principle

Thermal meters have no moving parts, wide turn-downs (up to 1000:1), a range from 0.02 meters per second (4 feet per minute) to over 200 mps (40,000 fpm), and very low pressure drop.  Smartmeasurement^TM, s ATMF series of thermal mass flowmeters can be used with pipe diameters ranging from 8mm (_¼”) to up to several meters using our multi-sensor configurations.  Process connections can be flanged, threaded, or hot-tapped ball valve.  Smartmeasurement^TM’ s ATMF Series Thermal Mass Flowmeters feature available integral style or remote mount electronics, an easy-to-read OLED display, and a unique calibration self-check technique that allows for field verification of the factory calibration. Please see the Thermal Product Matrix below to select the best configuration for your specific application.

Variable area flowmeters are simple and versatile devices that operate at a relatively constant pressure drop and measure the flow of liquids, gases, and steam. Variable Area (VA) flowmeters make use of a float, piston or vane placed inside a flow body, which changes position in response to changes in flow rate of the measure fluid media. The position of the float, piston or vane provides a direct visual indication of flow rate. Either the force of gravity or a spring is used to return the float to its resting position when the flow lessens.  For a more detailed discussion of the principle of operation, please go to: http://www.smartmeasurement.com/flow-meters/variable-area/measuring-principle

Smartmeasurement^TM’ s ALVAMT Variable Area flow meter is of the spring operated variety, which allows the meter to be mounted in either horizontal or vertical orientations. The ALVAMT makes use of rugged, metal tube construction making it ideal for high pressure, high temperature and other demanding flow applications where safety is a concern.  Features include mechanical readouts for use in locations where power is not available or in hazardous areas; analog and digital LCD local display options, multiple process connection options; several different materials of construction for metering of aggressive fluids and corrosion resistance; and HART enabled 4-20mA output to allow for remote monitoring and control.


Metal Tube Variable Area Meter

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Technology	Model/ Series	Gas Flow	Liquid Flow	Steam Flow	Line Size	Temperature	Pressure	Viscosity	Accuracy	Considerations
Variable Area	ALVAMT									Liquids must be clean

 

Variable Area Flow Meters

ALVA Family
Technology	Model	Line Sizes	Flow Rate	Viscosity	Accuracy	Pressures	Temperature	Materials	Mounting Orientations	Outputs
Metal Tube	ALVAMT	½''-8'' (8 - 400mm)	0.01-660 GPM (0.05 - 2,500 LPM)	1～300 cP	±1.5% (Std), ±2.5% w/ PTFE materials	930 psig (64 barg)	575 °F (300 °C) max	304SS (Std); 316SS, PTFE, or Tantalum (Opt)	Horizontal or vertical	Analog 4-20 mA, 0-5 VDC, HART, swtch & open collector
Glass Tube	Not Available From SMC	¼'' - 3'' (6 - 80mm)	0.05 to 264 GPM (0.005 to 1000 LPM)	< 50 cP recommended	±0.50% ~ ±5.0 of reading depending on make & model	<100 psig (7 barg)	Up to 350 °F (180 °C) max. depending on make & model	Borosilicate, acrylic, or polycarbonate tube, Stainless Steel float, depends on make & model	Vertical only	Switch & open collector

Positive Displacement Flowmeters, which employ one of the oldest-known flow measurement techniques, are widely used in industry and have one of the largest install bases of any flow meter technology. Positive Displacement Flowmeters feature two precisely machined rotating members inside a measuring chamber of known volume which may be used to accurately determine volumetric flow rate as a function of the rotors' velocity. A more detailed discussion of the principle of operation can be found at:http://www.smartmeasurement.com/flow-meters/positive-displacement/measuring-principle

The advantages that the Positive Displacement Flowmeter provides over other technologies are numerous. These advantages include high accuracy (up to 0.1% of reading), excellent repeatability, wide turndown ratios, high temperature operation, high viscosity operation, no upstream or downstream straight pipe requirement, the ability to be used with mechanical registers which require no electrical power, and readings which are immune to changes in viscosity. This combination of features and advantages makes the PD meter an ideal choice for applications that can be found in many different industries including food & beverage, paint & coatings, oil & gas, and fluid power.