Siemens SITRANS FM MAG 5100W Electromagnetic Flow Sensor

Overview

The Siemens SITRANS FM MAG 5100W is an electromagnetic flow sensor purpose-built for water and wastewater applications, including groundwater abstraction, drinking water distribution, wastewater treatment, sewage, and sludge handling. Available across an exceptionally wide size range from 0.5 inches (DN 15) up to 78 inches (DN 2000), the MAG 5100W pairs with a locally or remotely mounted SITRANS MAG5000 or MAG6000 flow transmitter to form a complete, high-accuracy flow measurement system.

Seven Star LLC supplies the Siemens SITRANS FM MAG 5100W as an authorized partner of Siemens, supporting water utilities, wastewater treatment operators, and industrial water users across Muscat, Sohar, Salalah, and the wider Sultanate of Oman. Genuine Siemens flow sensors, transmitters, and accessories are available through Seven Star LLC for new water infrastructure projects and metering upgrades throughout the GCC.

Measurement and Operating Principle

The MAG 5100W operates on Faraday’s law of electromagnetic induction: as conductive liquid flows through the sensor’s magnetic field, a voltage is induced across the flow that is directly proportional to the fluid’s velocity. This voltage is detected by Hastelloy C-276 integrated grounding and measuring electrodes and passed to the connected MAG5000 or MAG6000 transmitter, which converts the signal into a calibrated flow rate output with accuracy of 0.2% ±2.5mm/sec.

The sensor’s coned liner design improves low-flow accuracy, making it particularly effective for water leak detection applications where small flow changes must be reliably captured. Independent testing by Force Certification confirms the MAG 5100W maintains 0.8% accuracy even in zero-diameter upstream and downstream straight-run pipe installations, allowing flexible placement in constrained retrofit piping layouts without dedicated straight-run allowances.

Engineering Design of the Siemens MAG 5100W

The MAG 5100W features an epoxy-coated carbon steel body with a NEMA 4X/6/IP67-rated steel sensor housing, giving it a corrosion-resistant, rugged construction suitable for direct burial and constant flooding – conditions commonly encountered in buried water distribution networks and submerged wastewater applications. Liner material options include EPDM, suitable for drinking water applications, and NBR for general water and wastewater service, allowing the sensor to be matched to the specific water quality and regulatory requirements of the installation.

Operating pressures to 150 PSI and media temperatures from 14°F to 158°F (−10°C to 70°C) cover the majority of municipal and industrial water applications. When configured for remote mounting, the MAG 5100W requires an interconnecting shielded electrode cable and a NEMA 4X wall-mount polyamide junction box to link the sensor to its MAG5000 or MAG6000 transmitter, allowing the transmitter to be installed in a more accessible location away from submerged or buried sensor positions. Custody transfer, drinking water, and FM hazardous area non-incendive approvals are available depending on configuration.

Key Features

• Electromagnetic flow sensor for water, wastewater, sewage, and sludge applications
• Wide size range: 0.5" to 78" (DN 15 to DN 2000)
• 0.2% ±2.5mm/sec accuracy; 0.8% accuracy in zero-diameter pipe installations (Force certified)
• Hastelloy C-276 integrated grounding and measuring electrodes
• Coned liner design for improved low-flow accuracy and leak detection
• NEMA 4X/6/IP67 epoxy-coated steel housing, suitable for direct burial
• EPDM or NBR liner options, including drinking-water-approved EPDM
• Rated to 150 PSI and 14°F to 158°F (−10°C to 70°C)

Industrial Applications

The MAG 5100W is deployed across water abstraction, water and wastewater treatment plants, water distribution and leak detection networks, custody transfer water metering, irrigation systems, filtration plants, and general industrial water applications. Its wide size range and burial-rated construction make it especially suited to municipal water utility infrastructure, where sensors must operate reliably underground for years with minimal maintenance access.

Across Oman’s water and wastewater sector, from municipal supply networks to industrial water treatment facilities in Sohar and Salalah, Seven Star LLC supports water utilities and EPC contractors specifying the Siemens MAG 5100W for new metering infrastructure and aging-meter replacement programs. As an authorized Siemens partner, Seven Star LLC provides genuine sensors, MAG5000/6000 transmitters, and full system design support across Muscat and the wider GCC.

Technical Specifications

Call To Action

Contact Seven Star LLC, authorized partner for Siemens in Oman and the GCC, for pricing, sizing, and transmitter pairing support for the SITRANS FM MAG 5100W electromagnetic flow sensor. Our team supports water and wastewater infrastructure projects across Muscat, Sohar, Salalah, and the wider Sultanate of Oman with genuine Siemens flow measurement technology.