ABB FEP31 Electromagnetic Flowmeter

1. Product Overview

The ABB FEP31 Electromagnetic Flowmeter is an industrial-grade flow measurement instrument based on Faraday’s electromagnetic induction principle. It provides high-accuracy measurement of conductive liquids and is widely used in water treatment, chemical, pharmaceutical, food & beverage, and energy industries. FEP31 supports analog and digital output signals, easily integrating with PLC and DCS control systems.

2. Technical Specifications

• Model: FEP31

• Measurement Principle: Electromagnetic induction

• Medium: Conductive liquids (≥ 5 μS/cm)

• Nominal Diameter: DN 6–DN 200 (various sizes)

• Flow Range: 0.1–10 m/s depending on diameter

• Accuracy: ±0.5% of full scale

• Repeatability: ±0.2%

• Pressure Rating: PN16/25/40 (depending on model)

• Liner Material: PTFE, rubber, or other corrosion-resistant materials

• Electrode Material: Stainless steel, Hastelloy, titanium, or tantalum

• Output Signal: 4–20 mA, pulse output, HART/Modbus optional

• Power Supply: 24 V DC / 110–230 V AC

• Operating Temperature: ‑20 °C to +60 °C (standard)

• Protection Rating: IP65/IP67

• Installation: Straight pipe installation with required upstream/downstream lengths

• Standards: CE, IEC, UL

3. Key Advantages & Features

1. High Accuracy – ±0.5% accuracy suitable for metering and process control.

2. No Moving Parts – Minimal wear, low maintenance cost.

3. Wide Flow Range – Supports multiple pipe diameters and flow rates.

4. Corrosion Resistance – Liner and electrode materials compatible with aggressive liquids.

5. Multiple Output Options – Analog, pulse, and digital communications for easy integration.

6. Easy Installation & Maintenance – Compact design with standard flanges.

4. Typical Applications

• Water supply and wastewater treatment systems

• Chemical process liquid measurement

• Food & beverage industry flow control

• Pharmaceutical and bioprocess applications

• Energy and power plant circulation water monitoring

• Industrial process automation

5. Installation & Usage Notes

1. Diameter Selection – Choose appropriate meter size based on pipe diameter and flow rate.

2. Straight Pipe Requirement – Upstream ≥5D, downstream ≥2D to ensure stable flow.

3. Medium Conductivity – Conductivity < 5 μS/cm requires special electrode configuration.

4. Power Supply & Grounding – Proper grounding required to prevent signal interference.

5. Corrosion & Temperature Protection – Select suitable liner and electrode for medium’s chemical properties and temperature.

The structure and details of the product： ​

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