Name: Promag W 400, 5W4C
Brand: Endress+Hauser
Availability: InStock

Proline Promag W 400 electromagnetic flowmeter

Versatile standard flowmeter for the water and wastewater industry

Picture of Electromagnetic flowmeter Proline Promag W 400 / 5W4C for the water & wastewater industry

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Proline Promag W 400 for the water and wastewater industry

The world's first electromagnetic flowmeter for unrestricted measurements

Accuracy on a large scale – Production and calibration of electromagnetic flowmeters up to DN 3000 (120")

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The Electromagnetic Flow Measuring Principle

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Proline Promag W 400 electromagnetic flowmeter

Versatile standard flowmeter for the water and wastewater industry

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Benefits

Reliable measurement at constant accuracy with 0 x DN inlet run and no pressure loss
Flexible engineering – sensor with fixed or lap-joint process connections
Application fitness – EN ISO 12944 corrosion protection for underground or underwater installation
Improved plant availability – sensor compliant with industry-specific requirements
Safe operation – no need to open the device
Time-saving local operation without additional software and hardware – integrated web server
Integrated verification and build-up detection – Heartbeat Technology

Integrated technologies

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FLEXible answers to individual needs

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Proline Promag W 400 electromagnetic flowmeter

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Highly functional and convenient

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Fundamental selection Meet your basic measurement needs

Lean selection Handle your core processes easily

Extended selection Optimize your processes with innovative technologies

Xpert selection Master your most challenging applications

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Manufacturer's warranty

Engineered for confidence

Our instruments are designed for long‑lasting performance, precise measurement, and dependable operation in demanding industrial environments. Each product includes a standard manufacturer’s warranty that reflects our commitment to quality and to the trust you place in our solutions.

Should a warranty case occur, the device will be assessed and the applicable remedy will be provided in line with the warranty terms – helping ensure a reliable and efficient resolution and supporting continued operation of your measurement point.

Request for extended warranty

If you require extended warranty coverage, simply contact your local Endress+Hauser representative. Our experts will advise you on the available options to match your application and risk profile, helping you protect your investment, reduce unexpected repair costs, and ensure reliable long‑term operation beyond the manufacturer's warranty period.

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Warranty terms apply

The manufacturer's warranty and extended warranty are subject to specific conditions. For full details, please refer to the locally applicable General Terms and Conditions (GTC), which can be found on the respective country page of our website.

Services by your side

Right‑first‑time commissioning, worldwide

Endress+Hauser’s qualified service engineers ensure your measurement devices are commissioned right the first time, delivering application‑aligned accuracy, regulatory compliance, and operational confidence from startup onwards, anywhere in the world.

Remote support you can trust wherever you operate

With Endress+Hauser Smart Support, you benefit from faster issue resolution, higher uptime, reliable global expertise across the entire product lifecycle – and lasting peace of mind.

Committed to long‑term, sustainable performance

With deep field expertise, harmonized processes, and continuous monitoring, we accompany you with comprehensive service offerings – from initial start‑up through instrumentation maintenance to process optimization – as a true lifetime partner delivering improved outcomes.

For additional information, please contact your local Endress+Hauser representative.

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24/7 customer portal

Personalized transaction space

Check prices and delivery times, save your favorite products, create quotes and place orders in just a few clicks and track deliveries at any time. With access to your complete order and quote history including all relevant documents you benefit from full transparency throughout the entire process.

Easy access to technical documentation

Select and download all technical documentation such as operating manuals, calibration certificates, approvals and CAD drawings conveniently bundled as a complete documentation package for your entire order or quote.

My Endress+Hauser – all in one place

My Endress+Hauser is your 24/7 connection to Endress+Hauser – in the office, in the field or on the go. It brings together transaction management, documentation and software downloads, knowledge base access, customer support, engineering tools and cloud‑based IIoT services helping you work easier, faster and more efficiently.

Technology

Smart instrumentation through Heartbeat Technology

You want to increase plant performance and reduce costs? Our smart instrumentation portfolio with Heartbeat Technology offers in-depth device insight for more cost-efficiency and operational safety.

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Product support

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HAW569 surge protective device

Surge protective device for installation in the field device for power supply and communication signals optional with SIL and Ex approval

Spare parts

Electronic

Electronic Promag 400 Index C

Electronic

Order code XPD0014-

Drawing number 30

Electronic

Electronic Promag 400 Index C

Electronic

Order code XPD0014-

Drawing number 30

Electronic

Electronics Promag 400 Index C update

Electronic

Order code XPD0040-

Drawing number 30

Electronic

Electronics Promag 400 Index C update

Electronic

Order code XPD0040-

Drawing number 30

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Raw pump station upgrade with the Promag W 0 x DN

North East Water avoids costly pipe re-routing and instrument commissioning in their raw water pump station upgrade with the Promag W 0xDN.

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Success story

Build-up monitoring

A water treatment plant in Germany faced the problem of unexpected downtime due to clogged water wells. With Heartbeat Technology build-up index the customer now monitors iron build-up in his process.

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Competence brochure 0 x DN full bore for Proline Promag devices

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Unrestricted measurements with 0 x DN full bore

eBrochure – The world's first electromagnetic flowmeter option for reliable measurements independent of flow profile

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Proline Promag W 400 / 5W4C

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CAD Drawings

Configuration support

Spare parts

Electronic

Electronic Promag 400 Index C

Electronic

Order code XPD0014-

Drawing number 30

Electronic

Electronic Promag 400 Index C

Electronic

Order code XPD0014-

Drawing number 30

Electronic

Electronics Promag 400 Index C update

Electronic

Order code XPD0040-

Drawing number 30

Electronic

Electronics Promag 400 Index C update

Electronic

Order code XPD0040-

Drawing number 30

Spare parts

Selection of compatible products

Memograph M RSG45 data manager

Advanced data and energy manager with up to 20 analog/HART® inputs and 14 digital inputs

EngyCal RH33 BTU meter

Calibratable BTU meter for one measuring point with one pulse/analog input for flow and two RTD/analog inputs for temperature/pressure

RMA42 process transmitter with control unit

4-wire process transmitter with control unit as DIN rail device with up to two universal sensor inputs and optional SIL approval

HAW562 surge protective device

DIN rail surge protective device for installation in the control cabinet for power supply and communication signals optional with SIL and Ex approval

HAW569 surge protective device

Surge protective device for installation in the field device for power supply and communication signals optional with SIL and Ex approval

Measuring principle	Electromagnetic
Product headline	Versatile standard flowmeter for the water and wastewater industry. Reliable measurement at constant accuracy with 0 x DN inlet run and no pressure loss. Ideal for water measurement, e.g. drinking water, utility water and industrial/municipal wastewater.
Sensor features	Flexible engineering – sensor with fixed or lap-joint process connections. Application fitness – EN ISO 12944 corrosion protection for underground or underwater installation. Improved plant availability – sensor compliant with industry-specific requirements. International drinking water approvals. Degree of protection IP68 (Type 6P enclosure). Approved for custody transfer to MI-001/OIML R49.
Transmitter features	Safe operation – no need to open the device due to display with touch control, background lighting. Time‐saving local operation without additional software and hardware – integrated web server. Integrated verification – Heartbeat Technology. Transmitter housing made of durable polycarbonate or aluminium. WLAN access. Integrated data logger: measured values monitoring.
Nominal diameter range	DN 25 to 3000(1 to 120")
Wetted materials	Liner material hard rubber: 0 to +80 °C (+32 to +176 °F) Liner material polyurethane: –20 to +50 °C (–4 to +122 °F) Liner material PTFE: –20 to +90 °C (–4 to +194 °F) Electrodes: 1.4435 (316L); Alloy C22, 2.4602 (UNS N06022); Tantalum
Measured variables	Volume flow, conductivity, mass flow
Max. measurement error	Volume flow (standard): ±0.5 % o.r. ± 1 mm/s (0.04 in/s) Volume flow (option): ±0.2 % o.r. ± 2 mm/s (0.08 in/s), Flat Spec
Measuring range	0.5 m3/h to 263000 m3/h (2.5gal/min to 1665 Mgal/d)
Max. process pressure	PN 40, Class 300, 20K
Medium temperature range	Liner material hard rubber: 0 to +80 °C (+32 to +176 °F) Liner material polyurethane: –20 to +50 °C (–4 to +122 °F) Liner material PTFE: –20 to +90 °C (–4 to +194 °F)
Ambient temperature range	Liner material hard rubber: 0 to +80 °C (+32 to +176 °F) Liner material polyurethane: –20 to +50 °C (–4 to +122 °F)
Sensor housing material	DN 25 to 300 (1 to 12"): AlSi10Mg, coated DN 25 to 3000 (1 to 78"): Carbon steel with protective varnish Sensor connection housing (standard): AlSi10Mg, coated Sensor connection housing (option): Polycarbonate
Transmitter housing material	Polycarbonat; AlSi10Mg, coated
Degree of protection	Compact version: IP66/67, type 4X enclosure Sensor remote version (standard): IP66/67, type 4X enclosure Sensor remote version (option): IP68, type 6P enclosure, with protective varnish according to EN ISO 12944 C5‐M/Im1/Im2/Im3 Transmitter remote version: IP66/67, Type 4X enclosure
Display/Operation	4‐line backlit display with touch control (operation from outside) Configuration via local display, web browser and operating tools possible
Outputs	3 ouputs: 0‐20 mA/4‐20 mA HART (active) Pulse/frequency/switch output (passive) Pulse/frequency output (passive) Switch output (passive)
Inputs	Status input
Digital communication	HART, PROFIBUS DP, EtherNet/IP, Modbus RS485
Power supply	AC 100…240 V / AC/DC 24 V
Hazardous area approvals	cCSAus
Metrological approvals and certificates	Calibration performed on accredited calibration facilities (acc. to ISO/IEC 17025), NAMUR Custody transfer according to MI‐001 or OIML R49 (optional class I in combination with 0DN inlet run)
Pressure approvals and certificates	CRN
Material certificates	3.1 material
Hygienic approvals and certificates	Drinking water approval: ACS, KTW-BWGL, NSF 61, WRAS BS 6920

Proline Promag W 400 electromagnetic flowmeter

Proline Promag W 400 electromagnetic flowmeter

Proline Promag W 400 electromagnetic flowmeter

Product information

Selection of compatible products

Spare parts

Related content

Raw pump station upgrade with the Promag W 0 x DN

Build-up monitoring

Unrestricted measurements with 0 x DN full bore

Choose from our suggested options

Spare parts

Selection of compatible products

My Endress+Hauser

Products & Services

Industries

Support

Company

Proline Promag W 400 electromagnetic flowmeter

Proline Promag W 400 electromagnetic flowmeter

Proline Promag W 400 electromagnetic flowmeter

Product information

Selection of compatible products

Spare parts

Related content

Raw pump station upgrade with the Promag W 0 x DN

Build-up monitoring

Unrestricted measurements with 0 x DN full bore

Choose from our suggested options

Spare parts

Selection of compatible products

Products & Services

Industries

Support

Company

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