
Specs at a glance
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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)
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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) -
Max. process pressure
PN 40, Class 300, 20K
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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
Field of application
With its international approvals for custody transfer as well as drinking water, Promag W serves the broadest variety of applications. It is available as both compact or remote version. Promag W 400 saves time and costs thanks to the broad functionality of its transmitter optimized for Water & Wastewater. In addition, Heartbeat Technology ensures measurement reliability and compliant verification.
The bidirectional measuring principle is virtually independent of pressure, density, temperature and viscosity
Ideal for water measurement , e.g. drinking water, utility water and industrial/municipal wastewater
Device properties
International drinking water approvals
Degree of protection IP68 (Type 6P enclosure)
Approved for custody transfer to MI-001/OIML R49
Transmitter housing made of durable polycarbonate or aluminium
WLAN access
Integrated data logger: measured values monitoring
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
Videos
Extended selection
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High-end products
- Highly functional and convenient
Technical excellence
Simplicity

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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
---|---|---|
Fundamental selection Meet your basic measurement needs |
Technical excellence
|
Simplicity
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Lean selection Handle your core processes easily |
Technical excellence
|
Simplicity
|
Extended selection Optimize your processes with innovative technologies |
Technical excellence
|
Simplicity
|
Xpert selection Master your most challenging applications |
Technical excellence
|
Simplicity
Variable |
Predecessor
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Technical Information (TI)
Proline Promag W 400
English version - 09/2021
Electromagnetic flowmeter
EN 01/09/202101/01/202001/02/201901/10/201714/03/2017Language:
English
Version:
01/09/2021
File size:
5.4 MB
File name:
TI01046DEN_1021.pdf
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Operating Instruction (BA)
Proline Promag W 400 EtherNet/IP
English version - 02/2022
Electromagnetic flowmeter
EN 01/02/202201/01/202001/02/201901/10/201701/03/2015Language:
English
Version:
01/02/2022
File size:
6.4 MB
File name:
BA01214DEN_0721-00.pdf
-
-
-
Technical Information (TI)
Proline Promag W 400
Electromagnetic flowmeter
EN 01/09/202101/01/202001/02/201901/10/201714/03/2017Language:
English
Version:
01/09/2021
File size:
5.4 MB
File name:
TI01046DEN_1021.pdf
-
-
-
Operating Instruction (BA)
Proline Promag W 400 EtherNet/IP
Electromagnetic flowmeter
EN 01/02/202201/01/202001/02/201901/10/201701/03/2015Language:
English
Version:
01/02/2022
File size:
6.4 MB
File name:
BA01214DEN_0721-00.pdf
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-
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Operating Instruction (BA)
Proline Promag W 400 PROFIBUS DP
Electromagnetic flowmeter
EN 01/02/202201/01/202001/02/201901/10/201701/03/2015Language:
English
Version:
01/02/2022
File size:
6.1 MB
File name:
BA01234DEN_0721-00.pdf
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-
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Operating Instruction (BA)
Proline Promag W 400 Modbus RS485
Electromagnetic flowmeter
EN 01/02/202201/01/202001/02/201901/10/201701/03/2015Language:
English
Version:
01/02/2022
File size:
6 MB
File name:
BA01231DEN_0621-00.pdf
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-
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Operating Instruction (BA)
Proline Promag W 400 HART
Electromagnetic flowmeter
EN 01/09/202101/01/202001/02/201901/10/201714/03/2017Language:
English
Version:
01/09/2021
File size:
7 MB
File name:
BA01063DEN_0921.pdf
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Device Parameter (GP)
Proline Promag 400 HART
Electromagnetic flowmeter
EN 01/09/202114/03/201707/12/2015Language:
English
Version:
01/09/2021
File size:
2 MB
File name:
GP01043DEN_0321.pdf
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Device Parameter (GP)
Proline Promag 400 EtherNet/IP
Electromagnetic flowmeter
EN 01/02/202223/12/2015Language:
English
Version:
01/02/2022
File size:
1.5 MB
File name:
GP01046DEN_0221-00.pdf
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Device Parameter (GP)
Proline Promag 400 PROFIBUS DP
Electromagnetic flowmeter
EN 01/02/202223/12/2015Language:
English
Version:
01/02/2022
File size:
1.8 MB
File name:
GP01044DEN_0221-00.pdf
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Device Parameter (GP)
Proline Promag 400 Modbus RS485
Electromagnetic flowmeter
EN 01/02/202223/12/2015Language:
English
Version:
01/02/2022
File size:
2 MB
File name:
GP01045DEN_0221-00.pdf
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Short Instruction (KA)
Flowmeter Proline 400
PROFIBUS DP transmitter with electromagnetic sensor
EN 01/02/202201/02/2019Language:
English
Version:
01/02/2022
File size:
3.4 MB
File name:
KA01420DEN_0221-00.pdf
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Short Instruction (KA)
Proline Promag Brief Operating Instructions
Proline Promag Part 1 of 2 Electromagnetic sensor
EN 01/04/201701/08/201601/12/2015Language:
English
Version:
01/04/2017
File size:
1.3 MB
File name:
KA01216DEN_0317.pdf
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Short Instruction (KA)
Proline Promag W 400 Brief Operating Instructions
Electromagnetic flowmeter
EN 05/02/201810/09/201501/03/201504/12/201405/06/2014Language:
English
Version:
05/02/2018
File size:
1.9 MB
File name:
KA01114DEN_0718.pdf
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Short Instruction (KA)
Flowmeter Proline Promag W
Electromagnetic sensor
EN 01/08/202215/01/202201/09/202103/05/202101/01/2020Language:
English
Version:
01/08/2022
File size:
1.1 MB
File name:
KA01266DEN_1122-00.pdf
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Short Instruction (KA)
Flowmeter Proline 400
Modbus RS485 transmitter with electromagnetic sensor
EN 01/02/202201/02/2019Language:
English
Version:
01/02/2022
File size:
3.4 MB
File name:
KA01419DEN_0221-00.pdf
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Short Instruction (KA)
Flowmeter Proline 400
EtherNet/IP transmitter with electromagnetic sensor
EN 01/02/202201/02/2019Language:
English
Version:
01/02/2022
File size:
3.6 MB
File name:
KA01418DEN_0221-00.pdf
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Short Instruction (KA)
Flowmeter Proline 400
HART transmitter with electromagnetic sensor
EN 01/09/202101/02/201914/03/2017Language:
English
Version:
01/09/2021
File size:
4.3 MB
File name:
KA01263DEN_0321.pdf
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Installation Instructions (EA)
Replacing exchangeable measuring electrodes Installation Instructions
Promag 50, 51, 53, 400 Index C
EN 01/03/201820/04/2015Language:
English
Version:
01/03/2018
File size:
198.8 KB
File name:
EA00080DA2_1418.pdf
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Installation Instructions (EA)
Replacing the sensor
Promag 400 Index C
EN 01/11/202101/06/202001/07/201901/03/201804/03/2015Language:
English
Version:
01/11/2021
File size:
1.8 MB
File name:
EA01124DA2_0521.pdf
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Installation Instructions (EA)
Replacing the O-ring sensor connector, profile seal for sensor
Promag 800Index C, Promag 400 Index C
EN 04/04/202215/03/202201/04/2021Language:
English
Version:
04/04/2022
File size:
2.7 MB
File name:
EA01325DA2_0322-00.pdf
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Installation Instructions (EA)
Replacing the Display module
Promag 400 Index C, Prosonic Flow 400
EN 15/12/202101/06/202001/03/201807/02/2014Language:
English
Version:
15/12/2021
File size:
642.9 KB
File name:
EA01096DA2_0421-00.pdf
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Installation Instructions (EA)
Converting the Transmitter
Promag W, L 400 Index B, Promag W, L 400 IndexC
EN 01/11/202101/06/202001/07/201901/11/201722/04/2015Language:
English
Version:
01/11/2021
File size:
2.6 MB
File name:
EA01090DA2_0721.pdf
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Installation Instructions (EA)
Screw Sealing Installation Instructions
Promag 400 Index C
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