Promag W 300 – Electromagnetic Flowmeter for Water & Wastewater
The Endress+Hauser Promag W 300 is a reliable, cost-effective electromagnetic flowmeter engineered for water supply, wastewater treatment, and general utility flow measurement. Built on proven Endress+Hauser technology, it delivers accurate and repeatable measurements even in the most demanding conditions.
Key Features
- Nominal diameter: DN25 to DN2000
- Liner materials: Polyurethane (PUR), Hard rubber (NR), PTFE
- Electrode materials: Stainless steel 1.4435, Hastelloy C-22, Titanium, Platinum
- Accuracy: ±0.5% of reading
- Process temperature: –20 to +90°C
- Protection: IP67/IP68, NEMA 4X/6P
- Communication: 4–20 mA HART, PROFIBUS DP, Modbus RS485
Applications
- Municipal water supply and distribution networks
- Wastewater treatment plants and pumping stations
- Irrigation and agricultural water management
- Industrial cooling water circuits
Technical Specifications
| Parameter | Specification |
|---|---|
| Measuring principle | Electromagnetic induction (Faraday’s law) |
| Nominal diameter | DN25–DN2000 |
| Flow velocity range | 0.01–10 m/s |
| Accuracy | ±0.5% of reading |
| Repeatability | ±0.1% of reading |
| Process temperature | –20 to +90°C |
| Process pressure | Up to 40 bar |
| Protection class | IP67/IP68 |
| Communication | HART, PROFIBUS DP, Modbus RS485 |
| Power supply | 85–260 V AC / 16–62 V DC |
| Approvals | ATEX, IECEx, cCSAus, NEPSI |






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