The rosemount 8705 flange type electromagnetic flowmeter sensor is purpose-built for slurry flow measurement in demanding industrial settings. Its all-welded housing creates a hermetic seal that blocks moisture, chemical exposure, and abrasive contamination. With accuracy up to 0.15% of volumetric flow and a diameter range of ½ to 36 inches, this flanged mag flow sensor delivers precise, repeatable readings across mining, wastewater, chemical, and pulp and paper processes. For B2B procurement professionals sourcing dependable flow instrumentation, the 8705 represents a tested, field-proven option backed by Emerson's global support network.
Before they buy any instruments, procurement engineers need to know exactly what each one can do in real-world process conditions. The Rosemount 8705 Flange-type electromagnetic flowmeter sensor is good for both professional-level and everyday use.
Faraday's Law of Electromagnetic Induction tells us how the monitor works. A voltage equal to the flow speed is created when a conductive fluid moves through a magnetic field created by the sensor coils. The conductivity of the process liquid must be at least 5 µS/cm. Because of this, the Rosemount 8705 flange-type electromagnetic flowmeter sensor works very well for slurries, sludge, and chemical flows where the conductivity is always above this level.
The Rosemount 8705 flange-type electromagnetic flowmeter sensor can work with a lot of different process conditions. PTFE, PFA, polyurethane rubber, and neoprene are all choices for liners because they don't wear down easily in slurry service. For situations that are acidic, electrodes can be made of 316L stainless steel, titanium, or tantalum. The sensor has an IP68 rating for protection and sealed cable connectors. It works with all 8700 series receivers as well as older types like the 8712D and 8732C.
For accurate signals, you need to make sure there is good grounding and straight-pipe upstream and downstream runs. The sensor's terminal block can be taken off and replaced, which lets field workers fix wire problems without having to take the whole meter off the line. This choice in design cuts down on process downtime directly. An extra inner protection can be added to protect the inlet face from leading-edge wear, which is very useful for work with high-solids slurry.
Buying choices are rarely made by themselves. People look at a lot of options before making a decision, so knowing where the Rosemount 8705 flange-type electromagnetic flowmeter sensor fits in comparison to its competitors is very helpful.
The 8712 is a mixed flowtube-transmitter device that is used to measure liquids in general. The rosemount 8705 flange type electromagnetic flowmeter sensor, on the other hand, is a dedicated sensor that is meant to work with a different transmitter. This gives engineers more options when they want to upgrade current systems. For slurry uses that need liners that don't wear down easily and heavy-duty electrode materials, the Rosemount 8705 flange-type electromagnetic flowmeter sensor's modular design makes it a better fit than a standard combined unit.
Siemens SITRANS FM and ABB ProcessMaster are both good magnetic flow meters. The Rosemount 8705 flange-type electromagnetic flowmeter sensor's fully welded stainless and carbon steel housing, on the other hand, sets a new standard for sealing against the environment. When you enter Emerson's 16-digit calibration number system directly into the transmitter via HART or a local interface, it's easier to replace devices, and the system stays accurate without having to be fully recalibrated, which saves time in plant settings.
The Rosemount 8705 flange-type electromagnetic flowmeter sensor is designed with features that general mag meters don't usually have that make it better for slurry work. If you want, you can put its secondary containment sections around the wires to find any process fluid leaks before they reach the outside wiring. Different models don't all offer this level of protection. When you look at the whole life of a meter, less upkeep and fewer unexpected shutdowns directly lead to a lower total cost of ownership.
It takes more than a quick look to find the right Rosemount 8705 Flange type electromagnetic flowmeter sensor provider. These are some things U.S. B2B buyers should know before they place an order.
Prices depend on the size of the line, the material of the lining, the choice of electrode, and the flange standard. Units with a larger diameter and electrode materials that aren't common, like platinum or tantalum, cost more. When buying in bulk, working with an authorized distributor is usually faster than ordering directly from the factory, especially for standard configurations. When buyers get quotes, they should make sure that the current lead times are clear, since the supply of parts can change.
In corporate buying, fake instruments are a real risk. Always ask for an approved distributor certificate and check it against Emerson's public partner list to keep your supply chain safe. On the nameplate of every real Rosemount 8705 Flange type electromagnetic flowmeter sensor unit is a 16-digit calibration number that can be used to prove that the product is real and make setting up the transmitter easier.
Standard Emerson warranties cover problems with the way the product was made and give you access to technical support. If you are an OEM buyer putting the sensor into a packaged system, making sure you know the guarantee pass-through terms with your dealer ahead of time will keep disputes from happening later. When making a purchase choice, you should think about all of the services that come after the sale, like making sure the calibration is correct, getting extra parts, and getting to the field service team.
When you look at how well the rosemount 8705 flange type electromagnetic flowmeter sensor works in fields that deal with tough process fluids every day, you can see how useful it is in the real world.
In mining operations, slurry streams carry large amounts of solids that are rough and quickly damage equipment. The Rosemount 8705 flange-type electromagnetic flowmeter sensor's polyurethane rubber liner choice was picked for heavy-duty slurry service because it lasts longer than hard-faced options most of the time. Accurate flow data at these points helps with material balance calculations and lets workers manage how much water is used in filter circuits.
To keep track of chemical doses and stock consistency, pulp and paper plants need accurate flow measurements. Because the Rosemount 8705 flange-type electromagnetic flowmeter sensor's opening isn't blocked, it doesn't have the pressure drop and plugging problems that come with mechanical meters in fiber-filled flows. In the same way, wastewater treatment plants depend on the sensor's ability to work with different types of feed, where the amount of solids and ions changes throughout the day.
Most of the time, people who install slurry flowmeters have problems with signal noise and electrode fouling. Signal noise usually comes from bad grounding or too much air mixing with the process fluid. During routine maintenance, the accessible electrodes can be checked and cleaned to get rid of electrode fouling caused by scaling or biological growth. Emerson's diagnostic-enabled receivers can alert you to problems early on, cutting down on the time between a fault starting and a process stopping.
Emerson's Rosemount line has a great reputation because the Rosemount 8705 Flange type electromagnetic flowmeter sensor has been used in some of the harshest industrial environments ever.
The Rosemount 8705 flange-type electromagnetic flowmeter sensor has been certified to meet ISO manufacturing standards, ATEX approval for installations in dangerous areas, and CE marks for compliance with the European market. Before putting new instruments into service, procurement managers need to make sure they meet plant safety requirements and regulatory audits. These certifications are important to them.
Emerson offers technical support around the world through certified service partners, regional offices, and online resources. Plant workers learn how to install, set up, and fix problems with transmitters as part of training programs that make them ready to use the system with confidence from the start.
The Rosemount 8705 flange-type electromagnetic flowmeter sensor can be used with any 8700 series transmitter, which protects investments made in the past. It is possible for plants to change a flow tube without having to buy a new emitter. This makes upgrades much cheaper. Emerson's clear instructions and support for HART transmission also make it easy to connect to plant DCS and SCADA systems.
The rosemount 8705 flange type electromagnetic flowmeter sensor solves one of the hardest measurement problems in industrial processing: it reads slurry flow accurately over a long period of time without requiring a lot of maintenance. It is well-suited for engineers and purchasing managers in mining, water treatment, chemical processing, and pulp and paper because it is all-welded, has an abrasion-resistant lining option, can be serviced in the field, and is compatible with the whole 8700 transmitter family. The Rosemount 8705 Flange type electromagnetic flowmeter sensor is a reliable, certified, and field-proven slurry flow measurement solution that U.S.-based B2B buyers should seriously consider.
The Rosemount 8705 flange-type electromagnetic flowmeter sensor can measure mass flow rates with an accuracy of up to 0.15% at a 13:1 turndown ratio. Choosing the right liner material for high-solids slurry applications—like polyurethane for abrasive duty—keeps this accuracy over time by stopping liner warping that could lead to measurement errors.
Emerson usually suggests checking the adjustment once a year when everything is working normally. When the sleeve and electrodes are used in harsh slurry conditions with a lot of gritty material, they should be checked more often. The 16-digit calibration number on the nameplate of each Rosemount 8705 Flange type electromagnetic flowmeter sensor unit makes it easy to change the configuration if a flow tube needs to be replaced.
Yes. The Rosemount 8705 flange-type electromagnetic flowmeter sensor can handle flange ratings of up to ASME B16.5 Class 2500, which is a wide range of high-pressure process conditions that are common in chemical and mineral processing plants.
The Rosemount 8705 flange-type electromagnetic flowmeter sensor works with all 8700 series emitters, both new and old, such as the 8712D, 8712C, 8732C, and 8742C. Because it works with older systems, it's a good choice for replacing old ones.
HLX (Shaanxi Honglixing Electronic Technology Co., Ltd.) is a licensed seller of Emerson Rosemount products in the chemical, power, water treatment, and oil and gas industries. Our expert team is here to help you through every step of the buying process, from choosing the model to getting help after installation. Get in touch with sales01@hlx8.com to get a quote on the rosemount 8705 flange type electromagnetic flowmeter sensor for sale right away, whether you need one or a lot.
1. Emerson Process Management. Rosemount 8705 Flanged Magnetic Flowmeter Sensor Product Data Sheet. Emerson Electric Co., 2022.
2. International Society of Automation. Flow Measurement: Principles and Applications in Process Industries. ISA, 2020.
3. Baker, R. C. Flow Measurement Handbook: Industrial Designs, Operating Principles, Performance, and Applications. Cambridge University Press, 2016.
4. Control Engineering Magazine. "Selecting Magnetic Flowmeters for Slurry and Abrasive Service." CFE Media, 2021.
5. American Water Works Association. AWWA Manual M33: Flowmeters in Water Supply. AWWA, 2019.
6. Chemical Engineering Progress. "Advances in Electromagnetic Flow Measurement for Demanding Process Applications." AIChE, 2023.
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