Proline Promag W 400 Flow Meter
Part number 5W4B
Electromagnetic flow meter for water and wastewater, DN 25–2400, ±0.5 % accuracy, 4–20 mA HART and pulse, drinking-water approvals.
- CE
- RoHS
- REACH
Overview
Promag W 400 is the water-industry flow meter: an electromagnetic sensor with no moving parts, no pressure loss and drinking-water approvals (KTW, WRAS, NSF), paired with the Proline 400 transmitter. It handles raw water, drinking water, wastewater and sludge from DN 25 to DN 2400, with optional IP68 remote sensor for buried or flooded installation. Heartbeat Technology verifies the meter in place without reference equipment — useful for utilities that must prove measurement traceability. 5W4B is the ordering family; line size, liner, electrodes, flange standard and outputs are specified in the full code.
Key features
- Electromagnetic principle: no moving parts, no pressure loss, bidirectional
- Accuracy ±0.5 % o.r. (±0.2 % option), long-term stability
- Drinking-water approvals (KTW/W270, WRAS, ACS, NSF 61); custody transfer MI-001 option
- Heartbeat verification without process interruption
- Remote or compact transmitter; IP68 sensor for flooding; WLAN/web server option
Typical applications
- Drinking water distribution and custody transfer
- Intake and treatment process flow
- Wastewater and sludge
- Irrigation and network monitoring
Industries
Technical specifications — 5W4B
| Measurement | |
|---|---|
| Principle | Electromagnetic |
| Accuracy | ±0.5 % o.r. ± 2 mm/s (±0.2 % option) |
| Minimum conductivity | ≥ 5 µS/cm (20 µS/cm for demineralized water) |
| Process | |
| Line size | DN 25…2400 (1…96 in) |
| Liner | Polyurethane, hard rubber, PTFE |
| Process temperature | -20…+80 °C |
| Output | |
| Signal | 4–20 mA HART, pulse/frequency/switch; Modbus RS485, PROFINET, EtherNet/IP options |
| Environment | |
| Enclosure | IP66/67, IP68 sensor option |
| Power supply | 100–240 V AC or 24 V DC/AC |
Specifications are summarised from the manufacturer's documentation for selection purposes. Always confirm against the current datasheet before design-in; we send the datasheet and the exact ordering code with every quotation.
Related part numbers and alternatives
| Part number | Relationship | |
|---|---|---|
5W3B | Promag W 300 — same sensor with compact Proline 300 transmitter | Quote |
5L4B | Promag L 400 — lightweight lap-joint flange version for water | Quote |
5P4B | Promag P 400 — PFA/PTFE liner for chemical duty | Quote |
Not sure which variant you need? Send us the nameplate photo or the old part number and we will identify the current equivalent.
Supply, documentation and lead time
What you receive
- Genuine Endress+Hauser product in original packaging
- Commercial invoice and packing list; Certificate of Conformance on request
- Datasheet, declaration of conformity and country of origin as issued by the manufacturer
- Manufacturer warranty, period stated on the quotation
How we quote
- Reply within one business day with price, lead time and stock position
- Alternatives proposed when they improve price or delivery
- Incoterms of your choice: EXW Hai Phong, FOB/FCA, CIF/DAP to your site
- Consolidated shipments for multi-line orders; export documentation for buyers outside Vietnam
Indicative HS code 9026.10 — final classification is confirmed on the commercial invoice.
Frequently asked questions
Is the 5W4B available from stock, and what is the lead time?
Availability of the Proline Promag W 400 Flow Meter changes with manufacturer production and distributor stock, so we confirm it per request rather than publishing a number that may be out of date. Send the part number and quantity through the quote form and you will receive stock position and lead time within one business day.
Is the 5W4B genuine, and what documentation comes with it?
We supply only genuine Endress+Hauser products sourced from the manufacturer or authorized distribution channels. Each delivery includes the commercial invoice and packing list; a Certificate of Conformance, declaration of conformity and country-of-origin statement are provided on request, and the manufacturer's warranty applies.
Can you ship the 5W4B outside Vietnam?
Yes. We quote EXW Hai Phong, FCA/FOB, CIF or DAP and prepare the export documentation. Buyers in Japan, ASEAN, Europe and North America regularly consolidate multi-brand orders with us into one shipment.
What if the 5W4B is the wrong variant for my application?
Tell us the application in the notes field. Our engineers check the ordering code against your supply voltage, I/O, communication and environmental requirements and propose the correct variant or a successor part before quoting — at no charge.