 
                  Specs at a glance
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                              Max. measurement errorVolume 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)
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                              Measuring range0.06 dm³/min to 600 m³/h (0.015 gal/min to 2 650 gal/min) 
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                              Medium temperature range–20 to +150 °C (–4 to +302 °F) 
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                              Max. process pressurePN 40, Class 150, 20K 
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                              Wetted materialsLiner: PFA 
 Electrodes: 1.4435 (316L); Alloy C22, 2.4602 (UNS N06022); Tantalum; Platinum
 Process Connections: stainless steel, 1.4404 (F316L); PVDF; PVC adhesive sleeve
 Seals: O-ring seal (EPDM, FKM, Kalrez), aseptic molded seal (EPDM, FKM, silicone)
 Grounding Rings: stainless steel, 1.4435 (316L); Alloy C22, 2.4602 (UNS N06022); tantalum
Field of application
Promag H is the preferred sensor for hygienic applications with highest requirements in the food and beverage and life sciences industries. With its compact transmitter Promag H 300 offers a high flexibility in terms of operation and system integration: access from one side, remote display and improved connectivity options. Heartbeat Technology enables compliance and process safety at all times.
- The bidirectional measuring principle is virtually independent of pressure, density, temperature and viscosity 
- Dedicated to demanding applications in the food and beverage as well as in life sciences industries 
Device properties
- Liner made of PFA 
- Sensor housing made of stainless steel (3A, EHEDG) 
- Wetted materials CIP, SIP cleanable 
- Compact hygienic dual-compartment housing with IP69 and up to 3 I/Os 
- Backlit display with touch control and WLAN access 
- Remote display available 
Benefits
- Flexible installation concept – numerous hygienic process connections 
- Energy-saving flow measurement – no pressure loss due to cross-section constriction 
- Maintenance-free – no moving parts 
- Full access to process and diagnostic information – numerous, freely combinable I/Os and Ethernet 
- 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
 
                              - 
        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 | 
| 
 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)
 TI Proline Promag H 300English version - 07/2024 Electromagnetic flowmeter EN 17/07/202401/08/202216/09/201915/07/201901/11/2018Language: English Version: 17/07/2024 File size: 11.1 MB File name: TI01223DEN_0924-00.pdf 
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                                                    EU Declaration
 Product family: , Promag H, Promag P, Promag WEnglish version - 03/2025 Product root: 5H3B-, 5H5B-, 5P3B-, 5P5B-, 5W5B-, S5H3B-, S5H5B-, S5P3B-, S5P5B-, S5W5B- Declaration number: EC_00410_05.25 EN 20/03/2025Language: English Version: 20/03/2025 File size: 338.5 KB File name: EC_00410_05.25.pdf 
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                                                            Technical Information (TI)
 TI Proline Promag H 300Electromagnetic flowmeter EN 17/07/202401/08/202216/09/201915/07/201901/11/2018Language: English Version: 17/07/2024 File size: 11.1 MB File name: TI01223DEN_0924-00.pdf 
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                                                            Operating Instruction (BA)
 BA Proline Promag H 300 FOUNDATION FieldbusElectromagnetic flowmeter EN 17/07/202401/11/2016Language: English Version: 17/07/2024 File size: 6.8 MB File name: BA01477DEN_0224-00.pdf 
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                                                            Operating Instruction (BA)
 BA Proline Promag H 300 EtherNet/IPElectromagnetic flowmeter EN 17/07/202402/10/2017Language: English Version: 17/07/2024 File size: 7.7 MB File name: BA01716DEN_0224-00.pdf 
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                                                            Operating Instruction (BA)
 BA Proline Promag H 300Electromagnetic flowmeter 
 PROFINET over Ethernet-APLEN 17/07/202410/01/2024Language: English Version: 17/07/2024 File size: 6.9 MB File name: BA02106DEN_0224-00.pdf 
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                                                            Operating Instruction (BA)
 BA Proline Promag H 300Electromagnetic flowmeter 
 Modbus RS485EN 17/07/202401/08/202201/09/201902/10/201701/08/2016Language: English Version: 17/07/2024 File size: 7.2 MB File name: BA01394DEN_0524-00.pdf 
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                                                            Operating Instruction (BA)
 BA Proline Promag H 300 PROFIBUS PAElectromagnetic flowmeter EN 17/07/202401/11/201801/08/2016Language: English Version: 17/07/2024 File size: 6.6 MB File name: BA01396DEN_0324-00.pdf 
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                        - 
                                                            Operating Instruction (BA)
 BA Proline Promag H 300 PROFINETElectromagnetic flowmeter EN 17/07/202416/09/201915/07/201902/10/2017Language: English Version: 17/07/2024 File size: 9.4 MB File name: BA01718DEN_0424-00.pdf 
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                                                            Operating Instruction (BA)
 BA Proline Promag H 300Electromagnetic flowmeter 
 HARTEN 17/07/202401/08/202201/09/201902/10/201701/08/2016Language: English Version: 17/07/2024 File size: 8.2 MB File name: BA01392DEN_0524-00.pdf 
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                                                            Operating Instruction (BA)
 BA Proline Promag H 300 PROFIBUS DPElectromagnetic flowmeter EN 17/07/202401/06/2018Language: English Version: 17/07/2024 File size: 6.7 MB File name: BA01865DEN_0224-00.pdf 
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                                                            Device Parameter (GP)
 Proline Promag 300 PROFIBUS DP Description of Device ParametersElectromagnetic flowmeter 
 Proline Promag 300
 PROFIBUS DPEN 01/06/2018Language: English Version: 01/06/2018 File size: 2.2 MB File name: GP01135DEN_0118.pdf 
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