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Emerson 8750W Magnetic Flow Meter for Utility Water Service: Specs and Sourcing Guide
Quick Answer: The Emerson 8750W magnetic flow meter suits utility water lines from DN100 to DN1200. It typically works with fluid conductivity of 20 µS/cm or higher and has a 4-20 mA HART output. Silver Automation Instruments supplies a compatible electromagnetic flow meter for the same water service at lower cost and shorter lead time.
8750W Magnetic Flow Meter: Emerson Utility Water Service Application Specs
Most engineers check six items on the 8750W spec sheet. These are line size, liner, electrode material, flow range, output, and power supply. The 8750W covers DN100 to DN1200 in common utility water projects. Standard liner options are PTFE and polyurethane. PTFE handles chemical feed lines and clean water. Polyurethane handles raw water and wastewater with sand or grit. Standard electrodes are 316L stainless steel. The minimum fluid conductivity is 20 µS/cm. The meter outputs 4-20 mA with HART. Frequency and pulse outputs are also available for totalizer connection.
For flow range, the meter is designed for pipe velocities from 0.3 m/s to 10 m/s. The best accuracy is 0.5 percent of rate when the pipe is full. Power supply options include 90 to 250 VAC and 12 to 42 VDC. Process temperature depends on liner. PTFE liners handle higher temperature. Polyurethane liners are often limited to 60 °C. Ingress protection is IP67 as standard with IP68 optional for flooded pits.
Where Engineers Install the 8750W in Utility Water Plants
In practice, the 8750W appears on raw water intake lines, filter effluent, backwash lines, and main distribution headers. A customer in Vietnam used this style on a DN400 raw water line from a river intake. Another site in the Philippines installed a DN300 meter on a potable water transfer line.
Here is the thing. The meter works only when the pipe is full. Partial pipe flow makes the reading unstable. Most engineers skip the straight run requirement and then wonder why the reading drifts. Keep 5 diameters of straight run upstream and 2 diameters downstream. This avoids swirl and profile distortion.
Most utility water plants do not need hazardous area approval. But if the meter sits near a chlorine storage room or a gas dosing area, check the plant classification. Silver Instruments can supply ATEX or IECEx options for those zones.
Silver Instruments Replacement for the Emerson 8750W
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For clean potable water, hard rubber liner and 316L electrodes are enough. This keeps the price low. Because we manufacture in Nanjing, lead time for standard DN100 to DN600 meters is 5 to 10 working days. Large DN800 to DN2000 meters may take 15 to 20 working days. We ship to Southeast Asia, Oceania, Latin America, Africa, and the Middle East every week.
How to Request a Utility Water Flow Meter Quote
Send us your pipe size in DN, flow range in m3/h, process temperature in °C, pressure in bar, and fluid type. We will reply with a recommended model, liner, electrode, output, and price. Contact Silver Automation Instruments. Tel: +86-25-68650347. WhatsApp: +86-25-52155837. WeChat: +86 15365082610.
Frequently Asked Questions
What is the minimum conductivity for the Emerson 8750W?
The meter needs at least 20 µS/cm. Drinking water, raw water, and treated wastewater normally exceed this value. If your water has very low conductivity, check with a technical engineer before ordering.
Can the 8750W measure potable water?
Yes. Use PTFE or polyurethane liner and 316L stainless steel electrodes. Ask about local drinking water approvals for your country. Silver Instruments provides material certificates and calibration reports.
What pipe sizes does the 8750W cover?
For utility water service, the Emerson 8750W is commonly used from DN100 to DN1200. Silver Instruments can also supply from DN15 to DN2000. This helps if your site has small chemical lines or large transmission mains.
What is the typical accuracy for utility water measurement?
Accuracy is 0.5 percent of rate when the pipe is full and flow is stable. Accuracy falls if the pipe runs partially full or if the fluid conductivity is below 20 µS/cm.
What is the lead time for a Silver Instruments utility water meter?
Standard DN100 to DN600 meters ship in 5 to 10 working days. Large sizes and special liners may take 15 to 20 working days. We keep common DN150, DN200, and DN300 water meters in stock.
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