
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: Polyurethane; Hard rubber, PTFE
Electrodes: 1.4435 (316L); Alloy C22, 2.4602 (UNS N06022); Tantalum
Field of application
The premium device for water and wastewater measurement Promag W 300 was designed for reliable use in hazardous areas and under harsh conditions. Its compact transmitter offers high flexibility in terms of operation and system integration: access from one side, remote display and improved connectivity options. Heartbeat Technology ensures measurement reliability and compliant verification.
The bidirectional measuring principle is virtually independent of pressure, density, temperature and viscosity
Dedicated to the measurement of industrial or municipal water and wastewater
Device properties
International drinking water approvals
Compact dual-compartment housing with up to 3 I/Os
Backlit display with touch control and WLAN access
Remote display available
Benefits
Reliable measurement at constant accuracy with 0 x DN inlet run and no pressure loss
Flexible engineering – sensor with welded or lap-joint process connections
Long-term operation – robust and completely welded sensor
Improved plant availability – sensor compliant with industry-specific requirements
Full access to process and diagnostic information – numerous, freely combinable I/Os and fieldbuses
Reduced complexity and variety – freely configurable I/O functionality
Integrated verification – 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 |
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Fundamental selection Meet your basic measurement needs |
Technical excellence
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Simplicity
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Lean selection Handle your core processes easily |
Technical excellence
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Simplicity
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Extended selection Optimize your processes with innovative technologies |
Technical excellence
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Simplicity
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Xpert selection Master your most challenging applications |
Technical excellence
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Simplicity
Variable |
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Technical Information (TI)
Proline Promag W 300 Technical Information
English version - 09/2019
Electromagnetic flowmeter The specialist for demanding water and wastewater applications with compact, easily accessible transmitter
EN 01/08/202216/09/201915/07/201901/02/2019Language:
English
Version:
16/09/2019
File size:
11.4 MB
File name:
TI01414DEN_0319.pdf
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Operating Instruction (BA)
Proline Promag W 300
English version - 08/2022
Electromagnetic flowmeter HART
EN 01/08/202201/01/202001/09/201901/02/2019Language:
English
Version:
01/08/2022
File size:
9.5 MB
File name:
BA01918DEN_0422-00.pdf
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Technical Information (TI)
Proline Promag W 300
Electromagnetic flowmeter
EN 01/08/202216/09/201915/07/201901/02/2019Language:
English
Version:
01/08/2022
File size:
12.1 MB
File name:
TI01414DEN_0422-00.pdf
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-
Operating Instruction (BA)
Proline Promag W 300
Electromagnetic flowmeter HART
EN 01/08/202201/01/202001/09/201901/02/2019Language:
English
Version:
01/08/2022
File size:
9.5 MB
File name:
BA01918DEN_0422-00.pdf
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Operating Instruction (BA)
Proline Promag W 300 EtherNet/IP
Electromagnetic flowmeter
EN 01/01/202001/02/2019Language:
English
Version:
01/01/2020
File size:
8.1 MB
File name:
BA01937DEN_0220.pdf
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Operating Instruction (BA)
Proline Promag W 300 PROFIBUS PA
Electromagnetic flowmeter
EN 01/01/202001/02/2019Language:
English
Version:
01/01/2020
File size:
6.9 MB
File name:
BA01928DEN_0220.pdf
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Operating Instruction (BA)
Proline Promag W 300 FOUNDATION Fieldbus
Electromagnetic flowmeter
EN 01/01/202001/02/2019Language:
English
Version:
01/01/2020
File size:
7.1 MB
File name:
BA01938DEN_0220.pdf
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Operating Instruction (BA)
Proline Promag W 300
Electromagnetic flowmeter Modbus RS485
EN 01/08/202201/01/202001/09/201901/02/2019Language:
English
Version:
01/08/2022
File size:
8.5 MB
File name:
BA01939DEN_0422-00.pdf
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Operating Instruction (BA)
Proline Promag W 300 PROFIBUS DP
Electromagnetic flowmeter
EN 01/01/202001/02/2019Language:
English
Version:
01/01/2020
File size:
7 MB
File name:
BA01940DEN_0220.pdf
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Operating Instruction (BA)
Proline Promag W 300 PROFINET
Electromagnetic flowmeter
EN 01/01/202016/09/201915/07/201901/02/2019Language:
English
Version:
01/01/2020
File size:
9.7 MB
File name:
BA01941DEN_0420.pdf
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Device Parameter (GP)
Proline Promag 300
Electromagnetic flowmeter Modbus RS485
EN 01/08/202201/09/201902/10/201702/08/2016Language:
English
Version:
01/08/2022
File size:
2.9 MB
File name:
GP01053DEN_0422-00.pdf
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Device Parameter (GP)
Proline Promag 300 FOUNDATION Fieldbus Description of Device Parameters
Electromagnetic flowmeter
EN 01/11/2016Language:
English
Version:
01/11/2016
File size:
2.4 MB
File name:
GP01098DEN_0116.pdf
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