Magnetrol May 06, 2016 No Comments

magnetrol Radar Transmitter Pulsar R96

Magnetrol’s newest level control solution radar transmitter delivers best-in-class accuracy and reliability magnetrol radar transmitter pulsar radar transmitter Magnetrol International, a leading level and flow instrumentation manufacturer, has launched the Pulsar® Model R96 non-contacting radar transmitter (NCR) for accurate, reliable level control in process applications. Virtually unaffected by the presence of vapors or air movement within a vessel’s free space, the two-wire, loop-powered, 6 GHz NCR transmitter measures a wide variety of liquid media in process conditions ranging from calm product surfaces and water-based media to turbulent surfaces and aggressive hydrocarbon media. The PULSAR Model R96 offers state-of-the-technology performance, offering: - Best-in-class signal processing for exceptional accuracy and reliability - An extensive measurement range, from 20 meters to 40 meters - Advanced diagnostics with automatic waveform capture - A powerful device type manager (DTM) with industry-leading field configuration and troubleshooting capabilities - SIL 2 Capable levels and a 92.7% SFF - HART® and FOUNDATIONTM Fieldbus digital output This latest NCR unit joins the company’s ground-breaking Eclipse® Model 706 guided wave radar (GWR) transmitter to offer process industries a complete portfolio of advanced radar technologies for level control solutions. For information about the new PULSAR Model R96 NCR transmitter, visit radar.magnetrol.com or contact a MAGNETROL representative.

Pulp and Paper Industry Applications for Level Measurement | Magnetrol Blog

Magnetrol Dec 10, 2014 No Comments

← Green Harvest Food DriveLevel Instrumentation for Pulp and Paper Process Applications → Pulp and Paper Industry Applications for Level Measurement Posted on December 2, 2014 by magnetrol Increasing competitive, regulatory, supply chain and customer demands have driven the need for process improvement in the pulp and paper industry. In our three-week blog series, Magnetrol® reviews the critical impact that level control makes in improving process efficiencies and safety for pulp and paper mills. This week, turpentine and liquor recovery processes are explored. Next week, we cover plant-wide operations including MC pump standpipes, water storage, chemicals and additives, and lubrication and hydraulic oils. You can also read our first blog article about the pulp and paper industry, which features level measurement applications from chipping to papermaking processes. TURPENTINE RECOVERY Application: Vapors from the digester contain turpentine and 85% of it is released during the relief cycle. Recovery of this volatile organic compound (VOC) is undertaken for environmental reasons, to lessen effluent treatment of condensate, to utilize turpentine as a fuel source, or to sell it as a by-product to chemical processors. Challenges: Two vessels in a typical recovery system require level control of the turpentine/water interface: the decanter, or separator, and the storage tank. The National Fire Protection Association (NFPA) rates turpentine as a “severe fire hazard.” For this reason, the decanter is contained in a dyked area, storage tanks are sometimes located below ground, and controls must be rated explosion-proof. Level Technologies: - Echotel® Ultrasonic Switch or Thermatel® Thermal Dispersion Switch for point level – Eclipse® Guided Wave Radar Transmitter or Pulsar® Non-Contact Radar for continuous level – Atlas® Magnetic Level Indicator for visual indication BLACK, GREEN AND WHITE LIQUOR RECOVERY Application: Black liquor is the digester waste mixture of spent chemicals and lignin extracted from wood chips. When burned in a recovery boiler, black liquor produces heat for steam and also releases digester chemicals called “smelt.” Mixed with water, smelt becomes green liquor. This is treated with lime in the causticizers to produce white liquor, the digester’s cooking chemical. Challenges: Stored in varying concentrations, liquors are corrosive solutions with high levels of organic compounds. Liquors can cause chemical burns or damage the lungs if inhaled. Level sensors contend with the chemicals’ harshness, variable density and dielectric, agitation, foaming, and media stickiness. Tank controls should activate the appropriate alarms or emergency shutdown systems. Level Technologies: - THERMATEL Thermal Dispersion Switch for point level – ECLIPSE Guided Wave Radar Transmitter (with single rod probe) or PULSAR Non-Contact Radar for continuous level via Pulp and Paper Industry Applications for Level Measurement | Magnetrol Blog.

Improving Solar Power Efficiency Through Level and Flow Control | Magnetrol Blog

Magnetrol Nov 05, 2014 No Comments

Improving Solar Power Efficiency Through Level and Flow Control SEPTEMBER 2, 2014 / MAGNETROL Solar technologies use the sun’s energy to provide electricity, hot water, process heat and cooling. According to the U.S. Energy Information Administration, solar power presently provides less than 1% of U.S. energy needs, but this is expected to increase with the development of more efficient solar technologies. One way to enhance solar power efficiency is through the use of level and flow instrumentation to drive process improvement. TYPES OF SOLAR COLLECTORS Different solar collectors meet different energy needs. Passive solar designs capture the sun’s heat to provide space heating and light. Photovoltaic cells convert sunlight directly to electricity. Concentrating solar power systems focus sunlight with mirrors to create a high-intensity heat source, which then produces steam or mechanical power to run a generator that creates electricity. Flat-plate collectors absorb the sun’s heat directly into water or other fluids to provide hot water or space heating. SOLAR LEVEL AND FLOW APPLICATIONS Heat Transfer Fluid Storage: Large-scale solar collectors for electric power generation require a heat transfer fluid (water, thermal oils, or ionic liquids) to absorb the sun’s heat for generating steam. Arrays of mirrored panels convert the sun’s energy into +750° F (+399° C) thermal energy that’s hot enough to create steam for turbines. The mirrors focus sunlight onto pipes of heat transfer fluid that run along the mirror’s centerline. The fluid then boils water to produce steam. Thermal fluids also help provide hot water and heat. Thermal fluids are typically stored in pressurized tanks that require level monitoring. Recommended Continuous Level Technologies: Displacer Controller, Guided Wave Radar Recommended Point Level Technologies: External Cage Float Hot Water Storage: High-temperature solar water heaters provide energy-efficient hot water and heat for large industrial facilities. Thermal storage in buffer tanks provides interfaces between collector subsystems and energy-using systems. The preferred solar storage vessel is a vertical cylindrical tank designed for the maximum pressure of the supply water source, which may be as high as 150 psi. Recommended Continuous Level Technologies: Displacer Controller, Guided Wave Radar Recommended Point Level Technologies: External Cage Float Pump Protection: Flow switches protect pumps from damage due to leaks or if a valve is accidentally closed downstream. A flow switch will actuate an alarm and shut down the pump when flow drops below the minimum rate. Flow Alarm: Thermal Dispersion Flow Switch for High/Low Alarm, or Flow Switch

LEVEL AND FLOW INSTRUMENTATION FOR SOLAR POWER EFFICIENCY Share this: via Improving Solar Power Efficiency Through Level and Flow Control | Magnetrol Blog.

Reliable Foam Measurement Within Liquid Process Media is a Challenging Application

Magnetrol Jul 23, 2014 No Comments
Magnetrol_Logo_uid872012732441 Posted on Tue, Jul 01, 2014 @ 08:27 AM   Foam Measurement and Liquid Level Instrumentation: A Magnetrol Applications Study Process media susceptible to foaming are particularly challenging to accurate liquid level measurement. Foam’s lower density, as compared to a foam-free liquid, will absorb or deflect a substantial portion of the return signal, diminishing the all-important reflectivity required by non-contact measurement technologies. Depending on the degree of foaming, a foamed medium can also turn aggressively sticky and completely lose all flowability. A Magnetrol® prepared foods customer in Europe is well aware of the high demands that foam measurement places on liquid level instrumentation technology. The company’s chocolate mousse product is intentionally infused with air to give it the light and airy texture that is the signature of this dessert. The very name “mousse” is the French word for “foam.” The mousse filling system, with its multiple storage containers, measures chocolate mousse levels at various stages of foaming.  Each of these stages varies greatly as the system controls the dosing, foaming and other processes. A total of five measurements are required to produce the liquid, with several additional steps to create the ready-made mousse. But a continuous, reliable and repeatable measurement for the application had evaded the food processor. Competitive solutions faltered, including guided wave and through-air radar devices, as strong buildup took down capacitance and the lack of fluidity eliminated float technology. It always came down to signal loss, measurement errors and massive production waste, either by over- or underfilling the reservoirs. Finally, the MAGNETROL Eclipse® guided wave radar transmitter with a hygienic single rod probe gave the customer a solution to this tricky measurement application. With just a single sensitivity adjustment to the transmitter, the entire measuring range produced results that eliminated any need for high- and low-level switches. Even the built-in tank agitator did not challenge the performance of the ECLIPSE device. After the customer screened the measuring capability of the ECLIPSE model within an experimental facility, the plant manager gave the thumbs-up to install the transmitter in all five tanks. At another prepared foods facility in Europe, it was the level (with foam) measurement of a yogurt filling system that was causing headaches. This company requires a continuous, reliable and repeatable level measurement in the filling system for its low-fat yogurt. Feeding the filling machine on the production line are three different tanks, each one requiring its own level sensor. Derived from the Turkish word for “curdled,” yogurt is a thickened dairy product produced by bacterial fermentation of milk. Making the yogurt product creates significant foaming in the feed tanks, an issue that a level instrumentation competitor said could be solved using capacitance and guided wave radar devices in tandem. But when these devices were applied, measurements failed by indicating either zero level or 100% level. When Magnetrol proposed an ECLIPSE guided wave radar transmitter, a comparison test was requested. The two feed tanks were equipped with ECLIPSE units and the third tank was equipped with a competitor’s capacitance sensor. Because ECLIPSE was manufactured with the competitor’s standard process connection—a SMS nut—it was very easy to change between the two different level devices. During the six-hour test, the two installed ECLIPSE units worked without a single failure. During the clean-in-place cycle and the product changeover, the ECLIPSE models again performed flawlessly. The customer replaced the competitor’s capacitance sensor on the third tank with one more ECLIPSE transmitter. Today, all the yogurt tanks at the facility are functioning at optimal levels, using ECLIPSE guided wave radar technology. HeatRate_ECLIPSE_CTA-706-big_(4) via Reliable Foam Measurement Within Liquid Process Media is a Challenging Application.

It’s Official! Magnetrol® Marks New Headquarters Opening

Magnetrol Jul 23, 2014 No Comments
Ribbon_Cuttingv2-resized-600It’s Official! Magnetrol® Marks New Headquarters OpeningPosted on Tue, Jul 22, 2014 @ 08:45 AM   Email Article    inShare45  Despite the gray weather, the outlook for Magnetrol® International was 100% sunny during its official ribbon-cutting ceremony and open house, celebrating the grand opening of the company’s new corporate headquarters and manufacturing facilities in Aurora, Illinois, USA.On July 12, MAGNETROL employees, families, friends and special guests gathered for the ribbon-cutting ceremony and open house. In all, 661 were on hand to watch the ribbon cutting, including Illinois Congressman Bill Foster, Illinois State Senator Linda Holmes and Aurora’s Assistant Chief of Staff Chuck Nelson. Fourteen MAGNETROL officers and directors cut the ribbon, which was held by two veteran MAGNETROL associates, Crys Fiedler 39 years and Pepe Silva 37 years.Asked about their role in the ribbon-cutting, Mr. Silva said, "I was very proud to be chosen to participate in the ceremony," with Ms. Fiedler adding, "It was an honor to be asked." MAGNETROL President and CEO Jeff Swallow emphasized that creating the new corporate headquarters demonstrated a significant team effort. “Who would have thought that this company, which was started 83 years ago in a garage in St. Louis, Missouri, would be celebrating another start in a state-of-the-art, 231,000 square-foot, new corporate headquarters?” said Mr. Swallow. “Certainly not me. But here we are.”“That’s what makes this company great," added Vice President and Chief Operating Officer John Heiser. "It’s the perseverance, it’s the passion and it’s the drive that each of our associates, each one of our members of this company, each one of our partners has, that makes us what we are today.” via It’s Official! Magnetrol® Marks New Headquarters Opening.

Level Control Applications for Geothermal Power

Magnetrol Jul 07, 2014 No Comments

geothermal power example

BROCHURE :instrumentation for renewable energy

Geothermal reservoirs located deep underground provide powerful sources of heat energy. Drilling a geothermal well to a reservoir brings hot water and steam to the surface, where it is valued as a source of renewable energy. The three principal uses of geothermal power are electricity generation, geothermal heating and geothermal heat pumps. In these systems, there is a wide range of applications that require reliable level measurement and control for efficiency and safety.


Geothermal electricity can be produced at dry steam plants, flash steam plants and binary cycle plants. Dry steam plants use steam piped directly from a geothermal reservoir. Flash steam plants take high-pressure hot water and convert it to steam. As the water rises, the pressure is reduced and the water flashes to steam. Binary cycle plants take heat from the geothermal water and transfer it to an organic fluid (a butane or pentane hydrocarbon) with a low boiling point in a high-pressure heat exchanger known as a vaporizer. The heat transfer causes the second (or “binary”) liquid to turn to steam.

Geothermal heating is the direct use of geothermal heat for space and process heating applications. Industrial applications include zinc and gold mining, desalination, milk pasteurization and food dehydration.

Geothermal heat pumps use the Earth's constant temperatures to heat and cool buildings by transferring and removing heat into buildings according to seasonal needs.

Geothermal Vessels 2


1. STEAM/BRINE SEPARATOR: To achieve better conditions for turbine operation, a reservoir’s steam and brine (salt water) is separated into streams where the brine water and particulate matter settle out and the steam vapors rise. The steam collects at the top of the separator where it is removed. Liquid level control modulates the amount of water that is drawn off. Recommended Continuous Level Technologies: Guided Wave Radar, Displacer Controller Recommended Point Level Technologies: External Cage Float, Thermal Dispersion

2. DEGASSER TANK: Geothermal hot water is often routed through a degasser – a large insulated tank equipped to remove organic gases and provide displacement with air or nitrogen. Degassing operations provide treatment by way of carbon adsorption, thermal/catalytic oxidization, combustion, vacuum induction or by a series of condensers. Recommended Continuous Level Technologies: Guided Wave Radar, Displacer Controller Recommended Point Level Technologies: External Cage Float, Thermal Dispersion

3. WATER STORAGE TANK: Water tanks include those for heated water, cooling water, and wastewater. Direct heat use applications require heated water storage. Spent geothermal fluids with high concentrations of chemicals are stored prior to treatment and reinjection into the reservoir. Hot water can be cooled in special storage tanks to avoid modifying the ecosystem of natural bodies of water prior to reinjection. Recommended Continuous Level Technologies: Guided Wave Radar, Displacer Controller, Pulse Burst Radar (Through Air), Ultrasonic Recommended Point Level Technologies: Float Actuated, Ultrasonic

4. FLASH TANK: Hot water from the geothermal well enters a flash tank where the reduced pressure causes the water to boil rapidly, or "flash" into vapor. Water that remains liquid in the tank is returned to the groundwater pump to be forced down into the reservoir again. The vapor from the flash tank drives the steam turbine. Recommended Continuous Level Technologies: Guided Wave Radar Recommended Point Level Technologies: Displacer Switch, Thermal Dispersion

VAPORIZER: In these special heat exchangers, the geothermal fluid heats and vaporizes a secondary “binary” fluid, which is typically an organic liquid with a low boiling point. The organic vapor drives the turbine. The level of water in the tank must be monitored. Recommended Continuous Level Technologies: Guided Wave Radar, Displacer Controller Recommended Point Level Technologies: External Cage Float, Ultrasonic


Displacer Level Transmitter Technology Offers Advantages Over Torque Tubes

Magnetrol Jun 03, 2014 No Comments
digital e3 modulevelTorque tube instrumentation has been a common solution for level control applications. However, many processing plants are converting to a displacer level transmitter, which uses range spring technology, for more reliable level measurement and control. Displacer level transmitters, such as the Magnetrol® E3 Modulevel® linear variable differential transformer (LVDT) transmitter, feature greater output stability, structural integrity and ease of installation, compared to torque tubes. The following outlines why displacer level transmitter technology offers an excellent alternative to existing torque tube units.   Principle of Operation E3 MODULEVEL electronic level transmitters are advanced, intrinsically safe, two-wire instruments that utilize a simple buoyancy principle to detect and convert liquid level changes into a stable 4-20 mA output signal. The linkage between the level sensing element and output electronics greatly simplifies mechanical design and construction. Liquid level change acts upon the spring supported displacer causing vertical motion of a core within a linear variable differential transformer (LVDT). The enclosing tube acts as a static isolation barrier between the LVDT and the process media. As the core position changes with liquid level, voltages are induced in the secondary winding of the LVDT. These signals are processed in the electronic circuitry and used to control the current in the 4-20 mA output current loop. Benefits Over Torque Tubes As noted above, reliable output, structural integrity and ease of use are primary reasons displacer level transmitter technology outperforms torque tubes. Range spring technology dampens the effects of vibration and features a longer travel zone, yielding an output signal that is four times more stable than torque tubes. Range spring movement is free of wear and friction, unlike torque tubes, whose twisting motion causes friction buildup and fatigue failure. Displacer level transmitters are easier to install than torque tubes, and don’t require shutdown of process lines. Replacing Existing Torque Tubes I&C technicians who want the benefits of a range spring controller can reduce installation costs by not having to field pipe new cages. The existing torque tube cage may be used, based on the following considerations: Torque tube units should have side/bottom or side/side process piping connections. It is not possible to utilize the existing cage on a top-in/bottom-out torque tube cage. By replacing the entire unit with a complete MODULEVEL device equipped with top-in/bottom-out process piping cage connections, the process piping connection can be matched. If the existing cage has a vent connection piped into the top of the torque tube cage, it will also have to be repiped to a tee. The tee will have to be added to the top process connection on the cage side of the isolation valve or to a vent connection. The displacer length must be the same or shorter than the existing torque tube displacer. Torque tube displacers are larger in diameter than the MODULEVEL and manufactured in the same standard spans. By matching the torque tube chamber parting flange size, pressure, material, bolt circle, and the displacer span, a MODULEVEL unit can be mounted on the existing chamber. via Displacer Level Transmitter Technology Offers Advantages Over Torque Tubes.