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Dwyer Water Flow Meter: Flanged Series Utility Distributing Pipe Main Sensors. Silver Automation Instruments Replacement Options
Quick Answer: Silver Automation Instruments, a flow meter manufacturer and supplier, offers flanged electromagnetic flow meters that replace most Dwyer flanged series utility distribution pipe main sensor configurations in DN80 to DN300 lines. These meters work at PN10 to PN40 pressure ratings and 0 to 70 °C. They provide 4-20 mA HART, pulse, or RS485 Modbus RTU output to your existing PLC or SCADA.
Where This Sensor Series Is Used
Dwyer Water Flow Meter: Flanged Series Utility Distributing Pipe Main Sensors target treated water distribution lines in municipal networks. The pipe sizes are usually DN100, DN150, DN200, or DN250. Some older networks in Southeast Asia still use DN80 branch lines.
In practice, engineers want a flanged flow meter because the connection stays rigid and leak free on buried mains. We have seen this on customer sites many times. A water utility in Hanoi replaced mechanical meters on three DN200 distribution mains. The old meters needed frequent cleaning. The new flanged electromagnetic sensors went in without changing the pipe flanges.
Flanged Sensor Design and Pipe Main Installations
Here is the thing. Flange standards vary by country. Malaysia and Vietnam often use JIS 10K or DIN PN16. Mexico and Chile often use ANSI 150. If you specify the wrong flange, the site crew has to weld or use adapter rings. That adds downtime.
Most utility lines in the Middle East and Latin America use PN16 or ANSI 150 flanges. Silver Automation Instruments stocks DN80 to DN300 electromagnetic flow meters with those flange patterns. Other sizes are available on request. For buried chambers, choose IP68 remote sensors. The converter can sit above ground inside a panel.
Key Specifications Engineers Check
For a Dwyer flanged series utility distribution pipe main sensor replacement, check the liner first. EPDM works for drinking water and clean process water. PTFE is better for slightly aggressive water or higher temperature. The electrode material is also important. 316L stainless steel covers most water applications.
One technical detail many suppliers ignore is conductivity. Electromagnetic flow meters need a minimum fluid conductivity around 5 µS/cm. Most treated water has 100 to 800 µS/cm. So this is rarely a problem on utility mains.
Accuracy is usually 0.5 percent of reading for electromagnetic meters in this class. That is enough for district billing and leak trending. Output options include 4-20 mA HART, pulse, and RS485 Modbus RTU. The 4-20 mA HART signal connects directly to most water treatment plant PLCs.
Most engineers skip this part, but the flow range should cover low night flows and peak morning demand. A DN200 line in a city may need 20 to 800 m3/h. A DN100 line may only need 8 to 200 m3/h.
Recommended Silver Automation Instruments Models
Silver Automation Instruments supplies the SX-MAG 2100 flanged electromagnetic flow meter for utility mains. This model covers DN80, DN100, DN150, DN2
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For larger mains above DN300, we often recommend a clamp on ultrasonic flow meter for temporary verification or a full bore electromagnetic meter with project specific flanges. The clamp on meter saves installation time because the pipe stays in service. But for permanent district metering, the flanged electromagnetic meter is usually the better choice.
Customer Site Feedback
Last year a customer in Vietnam asked us to replace two Dwyer flanged series water flow meter sensors on a DN150 distribution main. The original sensors were removed because the liner had worn. They sent us the pipe size, pressure, and flow range. We supplied two SX-MAG 2100 meters with PN16 flanges and 4-20 mA HART output. The site kept the existing PLC and only changed the scaling in the analog input. Commissioning took less than one day.
Another site in Mexico used six DN200 meters for a potable water distribution loop. They needed RS485 Modbus RTU for a local SCADA. We configured the slave IDs at the factory. The integrator connected all six meters on one bus. Because the meters were IP68 remote sensors, the converters stayed dry in a cabinet above the flood line.
How to Request a Quote for a Dwyer Replacement
Send us your pressure (bar), temperature (°C), pipe size (DN), and flow range (m3/h). Also send the flange standard and signal type. We will respond with a model, price, and lead time within one business day.
You can reach Silver Automation Instruments at Tel: +86-135-1213-1526, WhatsApp: 86-135-12131526, or WeChat: +86 13512131526. If you have a drawing from a Dwyer flanged series utility distribution pipe main sensor, send it as well. That helps us match the flange drilling and cable entry.
FAQ: Dwyer Flanged Series Utility Pipe Main Sensor Replacement
Q1: Can Silver Automation Instruments replace a Dwyer flanged series sensor without changing the pipe flanges?
A1: Yes in most cases. We match DIN PN10, DIN PN16, ANSI 150, and JIS 10K flange patterns. Send the pipe size and flange standard.
Q2: What is the minimum straight pipe run for the SX-MAG 2100?
A2: Use 5 diameters upstream and 3 diameters downstream. For a DN200 line, that means 1000 mm upstream and 600 mm downstream.
Q3: Can this meter handle drinking water?
A3: Yes. Select an EPDM liner and 316L electrodes. The meter has no moving parts and is approved for potable water in most utility applications.
Q4: What output should I choose for district metering?
A4: 4-20 mA HART is the safest choice for PLC integration. RS485 Modbus RTU works well when you have multiple meters on one SCADA network.
Q5: Do you ship to the Middle East, Latin America, and Southeast Asia?
A5: Yes. We ship small meters by air and large DN150 to DN300 meters by sea. Lead time is usually 5 to 10 working days after order confirmation.