Endress+Hauser Promag H 300 Hygienic Electromagnetic Flowmeter
Overview
The Endress+Hauser Promag H 300 is a hygienic electromagnetic flowmeter purpose-built for the demanding cleanability and traceability requirements of the food, beverage, and life sciences industries. Combining a PFA-lined measuring tube with a compact stainless-steel transmitter, the Promag H 300 delivers accurate, maintenance-free volumetric flow measurement while meeting the 3-A, EHEDG, and FDA hygienic design standards that sanitary processing lines require.
As a regional supplier for Endress+Hauser, Seven Star LLC supplies the Promag H 300 Hygienic Electromagnetic Flowmeter to food and beverage manufacturers, pharmaceutical producers, and hospitality operators across the Sultanate of Oman and the wider GCC, with manufacturer documentation and local technical support.
Measurement Principle
The Endress+Hauser Promag H 300 operates on Faraday’s law of electromagnetic induction: a magnetic field is generated across the flow tube, and as the conductive liquid passes through this field it induces a voltage directly proportional to its flow velocity. A pair of hygienically designed electrodes in contact with the process fluid measures this induced voltage, which the transmitter converts into a bidirectional volumetric flow signal independent of the fluid’s pressure, density, temperature, or viscosity.
Because there are no moving parts, no flow obstruction, and no crevices where product can collect, the Promag H 300 satisfies the strict cleaning-in-place and sterilization-in-place requirements common on dairy, brewing, beverage, and pharmaceutical lines. Endress+Hauser’s Heartbeat Technology performs an in-situ, metrologically traceable verification of the sensor and transmitter without process interruption, giving quality and compliance teams documented evidence of measurement integrity between full recalibration cycles.
Engineering Design of the Endress+Hauser Promag H 300
The Promag H 300 sensor covers line sizes from DN 2 to DN 150 (1/12 inch to 6 inches) with a PFA liner selected specifically for its non-stick, low-adhesion surface that supports thorough cleaning and rapid draining. Electrode material options include 316L stainless steel, Alloy C22, tantalum, and platinum to match the corrosivity and hygienic requirements of different process fluids, while EPDM, FKM, Kalrez, and silicone seal options accommodate a wide range of CIP chemical exposure and temperature cycling conditions.
The compact transmitter housing is designed for tool-free access and supports remote WLAN display for monitoring from outside a cleanroom or sanitary zone, reducing the need to physically approach the instrument during production. Pressure ratings up to PN 40, ASME Class 150, or JIS 20K, together with sanitary Tri-Clamp, DIN 11851, and SMS process connections, allow the Promag H 300 to be specified consistently across a facility’s full range of sanitary process piping.
Key Features
The Endress+Hauser Promag H 300 brings together hygienic design and modern diagnostics for sanitary flow measurement across the region’s food, beverage, and life sciences sector:
- Covers DN 2 to DN 150 line sizes with a PFA liner engineered for CIP/SIP cleanability and rapid draining.
- 3-A, EHEDG, and FDA compliant design meets the documentation and hygienic construction standards required by regulated food, beverage, and pharmaceutical producers.
- Standard accuracy of ±0.5% of reading, with an optional ±0.2% high-accuracy variant for custody-grade or high-value product metering.
- Heartbeat Technology provides in-situ, documented verification of measurement performance without interrupting production.
- Electrode options in 316L, Alloy C22, tantalum, and platinum accommodate a wide range of corrosive and hygienic process fluids.
- Bidirectional measurement with no moving parts and no flow obstruction ensures zero pressure drop and long-term maintenance-free operation.
- Supports HART, PROFIBUS DP/PA, FOUNDATION Fieldbus, Modbus RS485/TCP, PROFINET, EtherNet/IP, and Ethernet-APL for integration with modern and legacy control systems.
- Remote WLAN display access allows monitoring from outside sanitary or cleanroom zones.
Industrial Applications
The Endress+Hauser Promag H 300 is widely applied on dairy processing lines, brewery and beverage filling systems, bottled water production, pharmaceutical and biotech manufacturing, and hospitality-sector food production facilities where hygienic design and CIP/SIP compatibility are mandatory. Its accuracy and hygienic construction also make it a strong fit for hospital complex water treatment systems and hotel chain kitchen and laundry operations across the region.
As a trusted supplier for Endress+Hauser, Seven Star LLC supplies the Promag H 300 to food and beverage manufacturers, pharmaceutical producers, and hospitality groups throughout Oman, including projects supported from the Sohar and Salalah economic zones, as well as broader GCC markets, with application engineering support for material and connection selection.
Technical Specifications
The table below summarizes the principal specifications of the Endress+Hauser Promag H 300 Hygienic Electromagnetic Flowmeter.
| Parameter | Specification |
|---|---|
| Model | Endress+Hauser Promag H 300 |
| Line Size Range | DN 2 to DN 150 (1/12 in to 6 in) |
| Accuracy | ±0.5% of reading (standard); ±0.2% of reading (optional) |
| Liner Material | PFA |
| Electrode Materials | 316L stainless steel, Alloy C22, tantalum, platinum |
| Seal Materials | EPDM, FKM, Kalrez, silicone |
| Hygienic Certification | 3-A, EHEDG, FDA compliant |
| Pressure Rating | PN 40, ASME Class 150, JIS 20K |
| Communication | HART, PROFIBUS DP/PA, FOUNDATION Fieldbus, Modbus RS485/TCP, PROFINET, EtherNet/IP, Ethernet-APL |
| Verification | Heartbeat Technology (in-situ diagnostics and verification) |
Request a Quote for Endress+Hauser Promag H 300
Seven Star LLC invites food, beverage, pharmaceutical, and hospitality operators across Oman and the GCC to submit a formal request for quotation for the Endress+Hauser Promag H 300 Hygienic Electromagnetic Flowmeter. In Oman and the GCC, Seven Star LLC supplies common configurations on request, provides the manufacturer technical datasheet on request, and connects customers directly with our instrumentation division for hygienic connection and material selection. Contact Seven Star LLC today to receive a competitive quotation with current lead time and local technical support. The Endress+Hauser Promag H 300 remains a trusted hygienic flow measurement choice across the region’s sanitary process industries.
Browse the full Endress+Hauser (E & H) range or see more Flowmeters products supplied by Seven Star LLC in Oman and the GCC.
- datasheet Endress+Hauser Promag H 300 Datasheet Download

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