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6 Magnetic Flow Meter: Flanged Wastewater Effluent Management Systems
Quick Answer: A 6-inch (DN150) flanged magnetic flow meter gives reliable volumetric flow data for effluent, sludge, and raw sewage. No moving parts, no pressure drop, and works with solid content up to 5 percent. Silver Automation Instruments offers these meters with 4-20 mA HART, Modbus, and IP68 sensor for submerged installations.
Why a Flanged Electromagnetic Meter for Effluent
Wastewater effluent contains solids, grease, and chemical residues. Turbine meters clog. Orifice plates wear. Electromagnetic flow meters have a full bore design that passes solids without obstruction. The flanged connection, typically ASME B16.5 150 lb or DIN PN16, locks the meter into the pipe and allows easy removal for inspection. We see this choice in municipal plants across Indonesia, Kenya, and Chile handling 200 to 2000 m³/h.
Material Choices for Harsh Wastewater
Liner and electrode selection decides the meter lifespan. For neutral to moderate pH effluent, hard rubber liners work well and cost less. For aggressive chemical waste or high-temperature streams, PTFE liner is safer. Silver Automation Instruments 6-inch model uses Hastelloy C-22 electrodes as standard. A textile plant in Vietnam measured dye wastewater at pH 9.5 with occasional bleach rinse. They switched to PTFE liner and saw zero swelling after three years. If your waste has oil and solvents, specify PTFE liner and tantalum electrodes.
Key Specifications of the 6-Inch DN150 Model
This meter covers flow velocities from 0.3 to 10 m/s. Accuracy is ±0.5% of reading for flows above 0.5 m/s. The transmitter outputs 4-20 mA HART, pulse, and RS485 Modbus. Sensor protection is IP68, so it can sit in a flooded meter pit. Process temperature range depends on liner: hard rubber goes to 80°C, PTFE to 150°C. Minimum conductivity is 5 µS/cm. Most effluent streams range from 100 to 2000 µS/cm, so that is never a limitation.
Installation Advice from the Field
Here is the thing. Grounding is the most skipped step in wastewater magmeter installation. If the pipe is plastic or internally lined, you need gr
Frequently Asked Questions
What minimum conductivity does the meter require?
5 µS/cm minimum. Effluent from food, textile, and municipal plants stays well above this. Rainwater or ultrapure water may need a different technology, but typical wastewater is fine.
Can it measure sludge with 3% solids?
Yes. Use a hard rubber liner and keep flow velocity above 1 m/s to prevent sedimentation. We tested this with thickened sludge at a Philippines wastewater facility, and accuracy stayed within 1% for months.
What output signals are available?
Standard is 4-20 mA HART plus pulse output. Modbus RTU is optional. This lets you connect to SCADA, PLC, or a local panel. Silver Instruments can also provide a blind version for battery-powered remote sites.
What flange standards do you support?
We supply ASME B16.5 150 lb, DIN PN10/16, JIS 10K, and others. Tell us your pipe standard when you inquire, and we will match it. The 6-inch model typically uses ANSI 6 inch 150 lb or DN150 PN16.
Do you offer ATEX or IECEx certification for wastewater plants with biogas?
We offer Ex d or Ex ia versions for Zone 1 and Zone 2. Biogas from anaerobic digesters can create an explosive atmosphere. Our flanged magmeter can be certified ATEX II 2G. Specify the zone classification when you request a quote.
To get a price and delivery time for the 6-inch flanged wastewater magnetic flow meter, send your pipe size (DN), flow range (m³/h), temperature, and effluent type. Contact Silver Automation Instruments: Tel +86-25-68650347, WhatsApp +86-25-52155837, WeChat +86 15365082610. Or visit flow-meter.com.au to see the full range.