Electromagnetic Flow Meters
Electromagnetic Flow Meter for ETP & Corrosive Effluent
Mag flow meter for effluent, acids and alkalis with PTFE, FEP or PFA lining and Hastelloy, titanium, tantalum or platinum electrodes. DN10–DN2800, 4–20 mA, RS485, HART.
- PTFE, FEP or PFA lining up to 180 °C
- Hastelloy B/C, titanium, tantalum or platinum electrodes
- Forward and reverse flow
- Ex-proof version available
- 4–20 mA, pulse, RS485, HART
Electromagnetic Flow Meter for ETP & Corrosive Effluent specifications
| Size | DN10 – DN2800 |
|---|---|
| Medium | Conductive liquid, slurry |
| Medium temperature | E grade ≤ 60 °C; H grade ≤ 180 °C |
| Minimum conductivity | ≥ 5 µS/cm |
| Accuracy | ±0.25% or ±0.5% |
| Repeatability | ±0.1% / ±0.17% |
| Rated pressure | 0.6, 1.0, 1.6, 2.5, 4.0, 6.4 MPa (or as specified) |
| Display | Flow rate, totaliser, velocity, flow rate ratio |
| Signal output | 4–20 mA, pulse, RS485, HART |
| Power supply | AC 85–265 V; DC 18–38 V |
| Converter type | Integral or remote |
| Protection | IP65 / IP68 |
| Explosion proof | Ex de ib mb IIC T3–T6 |
| Flow velocity | 0.05–12 m/s (0.1–15 m/s on request) |
| Liner | CR (rubber) / F4 (PTFE) / F46 (FEP) / PFA |
| Flow direction | Forward and reverse |
| Electrode material | 316L, Pt, Ta, Ti, Hastelloy B, Hastelloy C, WC |
| Number of electrodes | 3–6 |
| Flange material | SS / CS |
| Alarm (normally open) | Empty pipe, excitation, upper/lower limit |
| Ambient | −30 to +60 °C, humidity < 90% |
| Protocol | RS485 / HART |
Industrial effluent often contains acids, alkalis, solvents and salts that would attack a standard flow meter. This ETP configuration pairs a chemically inert fluoropolymer lining with an electrode material chosen for your specific effluent, so the meter keeps reading accurately for years.
How to choose the lining material
| Lining | Symbol | Performance | Temperature | Typical use |
|---|---|---|---|---|
| Rubber | CR | Wear resistant; handles average concentrations of acid, alkali and salt solutions | ≤ 70 °C | Tap water, industrial water, sea water |
| PTFE | PTFE (F4) | Chemically stable; resists boiling hydrochloric acid, sulphuric acid, aqua regia and concentrated alkali | ≤ 150 °C | Corrosive acids, salts and solutions |
| Fluorinated ethylene propylene | F46 / FEP | Chemical resistance equivalent to F4 with higher tensile strength | ≤ 180 °C | Corrosive acid and salt solutions, negative pressure |
| Polyurethane | PU | Excellent wear resistance; not suitable for acids | ≤ 70 °C | Slurry, pulp and other abrasive media |
How to choose the electrode material
| Electrode | Suitable for | Not suitable for |
|---|---|---|
| 316L | Domestic water, industrial water, raw water, city sewage, weakly corrosive acid, alkali and salt solutions | Strong acids and alkalis |
| Hastelloy B | Non-oxidising acids below 10%, sodium hydroxide below 50%, ammonium hydroxide at all concentrations, phosphoric and organic acids | Nitric acid |
| Hastelloy C | Mixed acids (e.g. chromic + sulphuric), oxidising salts such as sea water containing Cu⁺⁺⁺ and Fe⁺⁺⁺ | Hydrochloric acid |
| Titanium | Salts (sodium, potassium, chloride, ammonium salts, sodium hypochlorite), potassium hydroxide below 50%, ammonium and barium hydroxide | Hydrochloric, sulphuric, phosphoric, hydrofluoric and other reducing acids |
| Tantalum | Hydrochloric acid below 40%, dilute and concentrated sulphuric acid (not oleum), chlorine dioxide, ferric chloride, hypochlorous acid, sodium chloride, lead acetate, nitric acid | Alkalis, hydrofluoric acid |
| Platinum | Almost all acid, alkali and salt solutions, including fuming sulphuric and fuming nitric acid | Aqua regia, ammonium salts |
Flow range by line size
| Size | Flow range (m³/h) | Accuracy range (m³/h) |
|---|---|---|
| DN 10 | 0.014–3.39 | 0.08–2.82 |
| DN 15 | 0.03–7.63 | 0.19–6.35 |
| DN 20 | 0.06–13.56 | 0.33–11.34 |
| DN 25 | 0.09–21.19 | 0.52–17.66 |
| DN 32 | 0.14–34.72 | 0.86–29.93 |
| DN 40 | 0.23–54.25 | 1.35–45.21 |
| DN 50 | 0.35–84.78 | 2.12–70.65 |
| DN 65 | 0.6–143 | 3.58–119 |
| DN 80 | 0.90–217 | 5.43–180 |
| DN 100 | 1.41–339 | 8.48–282 |
| DN 125 | 2.21–529 | 13.25–441 |
| DN 150 | 3.18–763 | 19.08–635 |
| DN 200 | 5.65–1356 | 33.91–1130 |
| DN 250 | 8.83–2119 | 52.99–1766 |
| DN 300 | 12.7–3052 | 76–2543 |
| DN 350 | 17.3–4154 | 103–3461 |
| DN 400 | 22.6–5425 | 135.5–4521 |
| DN 450 | 28.6–6867 | 171–5722 |
| DN 500 | 35.3–8478 | 211–7065 |
| DN 600 | 51–12208 | 305–10173 |
| DN 700 | 69–16616 | 415–13847 |
| DN 800 | 90–21703 | 542–18086 |
| DN 900 | 114–27468 | 686–22890 |
| DN 1000 | 141–33912 | 847–28260 |
| DN 1200 | 203–48833 | 1221–40694 |
| DN 1400 | 277–66467 | 1662–55389 |
| DN 1600 | 361–86814 | 2171–72345 |
| DN 1800 | 457–109874 | 2747–91562 |
Typical applications
- ETP inlet, equalisation and final outlet
- Chemical, pharma and dye-house effluent
- Acid and alkali dosing and transfer
- Electroplating and pickling lines
- Abrasive slurry (with PU lining)
Not sure which combination fits? Send us the effluent composition, temperature and line size and we will recommend the lining and electrode.
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