The Triple-Electrode Trick: How RBEF-P Masters Low-Flow Sewage Measurement (DN100-DN1400, ±2.5%FS)

 "When your flowmeter can’t handle half-empty pipes, you’re not measuring – you’re guessing."  

Most electromagnetic flowmeters fail below 30% liquid levels. Grease clogs electrodes. Storm surges distort readings. RBEF-P solves this with a surgical approach – verified by its 2024 spec sheet.  

 

The Core Innovation: 3 Electrodes > 1  

While single-electrode meters struggle with floating debris, RBEF-P uses strategically placed electrodes at 10%, 30%, and 50% pipe height. The system auto-selects the optimal signal based on liquid level and contamination.  


Result:  

✅ 10%-100% level measurement – Even in drought-stricken drains  

✅ Immunity to surface grease – No manual cleaning required  

✅ ±2.5%FS accuracy (Page 3) = 0.5% flow error + 0.5% level error  


Installation: Zero Civil Engineering

Forget concrete weirs:  

1. Cut existing pipe (DN100-DN1400)

2. Bolt RBEF-P with industry-standard flanges (GB/DIN/ANSI/JIS)

3. Connect outputs: 4-20mA + RS485 Modbus (Page 3)


Cost savings: 90% vs. building flumes.  


Technical Specs Straight From the Manual  

| Parameter            | RBEF-P Value                                   

| Liquid Level       | 10% - 100% pipe diameter                  

| Accuracy            | ±2.5%FS (Flow 0.5% + Level 0.5%)   

| Flow Velocity    | 0.05 - 10 m/s                                        

| Process Temp     | ≤80°C (All linings)                            

| Electrodes         | SS316L/Ti/TA/Hastelloy B/C          

| Liner Materials  | Neoprene/PTFE/Polyurethane      

| IP Rating           | Sensor: IP65 (std)/IP68 (opt)       

|                          | Converter: IP54                     


 Where It Outperforms 

🌀 Combined Sewer Overflows (CSOs)  

Problem: Flash floods distort readings.  

RBEF-P fix: 0.05 m/s low-flow detection + 10 m/s surge handling.  


 🏭 Paper Mill Effluent  

Problem: Fiber clogs sensors.  

RBEF-P fix: Abrasion-resistant liners (Neoprene/PTFE) + no moving parts.  


⚡ Wastewater Plant Intake  

Problem: Sediment causes calibration drift.  

RBEF-P fix: Grounding rings/electrodes (P4 Code Item 5).  


 The Selection Code Decoder 

Your cheat sheet for ordering:  

Example: RBEF-P DN300-20-1-0-0-A-8-1-R-A-3-1-1-0-C

→ DN300 pipe | ANSI 150 flange | 316L electrode | Neoprene liner 

→ Flange ground | 80°C | IP68 sensor | Remote converter 

→ 220V power | LCD display | 4-20mA+pulse+RS485 | 3-point cal


 "If your pipe isn’t always full, your flowmeter shouldn’t act like it is."  


Get the Specs:  

[RBEF-P 2024 Product Manual](http://www.rbflowmeters.com/Flow_meter-Magmeter/partially_filled_pipe_magnetic_Flow_Meter.html)  

Talk to Our Team: info@rbflowmeter.com  


#WastewaterTech #FlowSensing #WaterInnovation #SCADA #ModbusRTU #IndustrialIoT #CivilEngineering  #EMF #OpenChannel #PartiallyPipes


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