SITRANS FMS500

SITRANS FMS500 is an electromagnetic flow sensor for water and wastewater, built for low-flow accuracy and durability.

• Standard accuracy: ±0.4% of flow rate
• Optional calibration: ±0.2% for applications requiring even tighter tolerances

High-performance electromagnetic flow transmitter for accurate conductive liquid measurement with reliable operation, easy commissioning and smart diagnostics.

Electromagnetic flow sensor for demanding process applications, combining liners and electrodes with robust design and precise measurement of conductive liquids.

Enable optimal flowmeter performance with this advanced, portable device for complex on-site verification and certification — without interrupting your process.

SITRANS FMS500 is designed for abstraction, treatment, distribution, irrigation and wastewater applications. It supports sensitive low-flow measurement for leak detection, while approved liner options cover potable and non-potable water applications. Combined with SITRANS FMT020, it forms the SITRANS FM520 system with conductivity measurement, diagnostics and fast commissioning via SENSORPROM™ technology.

High sensitivity at low-flow velocities helps reveal leaks earlier, improve district metering insight and support more confident balancing of water distribution networks.

A rugged design for buried, flooded and hard-to-access locations gives planners more freedom in civil work and helps keep measurement points close to where data is needed.

With no moving parts and a rugged design, SITRANS FMS500 supports long operating intervals and keeps maintenance effort low in water applications.

DN 15 to DN 2000 (½” to 80″) 0 to 10 m/s

Standard accuracy of 0.4% of rate, with optional high-accuracy calibration up to 0.2% of rate

Up to 40 bar (up to 580 psi) (dependent on sensor size)

Ambient temperature: –20 to 70°C (–4 to 158°F) Medium temperature: –10 to 70°C (14 to 158°F)

Liners, electrodes, and sensor material

Liners: EPDM, NBR; Electrodes: Hastelloy C-276, built-in grounding electrodes Sensor material: Carbon steel, with corrosion resistant epoxy coating

Drinking water approvals (for EPDM), e.g. WRAS, NSF/ANSI Standard 61, compliance with Trinkwasserverordnung §14, AS/NZS 4020, GB/T 5750, ACS and Belgaqua

MI-001 cold water (EU) and OIML R49: DN 50 … DN 2000 (2″ … 80″)

Support 0 x DN upstream and 0 x DN downstream installation (all orientations)

FM – Non-Incendive (NI) Class I, Division 2

ATEX/IECEx – Increased safety (Ex e) Zone 2

With SITRANS FMT020, SENSORPROM™ stores sensor data and calibration values for fast commissioning and easier transmitter replacement, helping reduce setup errors, shorten service time and return the meter to operation quickly.

Fully welded sensor is built for direct burial and flooding with IP68 options. Integrated grounding electrodes can eliminate grounding rings. Flowmeter supports 0 x DN upstream and downstream installation in all orientations.

NBR and EPDM liner options are suitable for ground, potable, cooling and wastewater applications. Drinking water approvals include WRAS, NSF/ANSI 61, ACS, Trinkwasserverordnung §14, Belgaqua, AS/NZS 4020 and GB/T 5750.

When combined with transmitter SITRANS FMT020 as SITRANS FM520, the flowmeter is Siemens EcoTech certified. Up to 15% lower operational energy use, recyclable packaging, repairability and firmware updates reduce lifecycle impact.

Integrated diagnostics and self-verification continuously check device health, while SITRANS Verificator enables external verification with traceable reporting. Results are available via SIMATIC PDM and SITRANS mobile IQ.

The SITRANS FM520 carries the Siemens EcoTech label for its sustainable, resource-efficient design. It consumes less energy, uses recyclable packaging materials and features a long-lasting, easily repairable construction. This combination reduces environmental impact while maintaining the high accuracy and reliability expected from Siemens. Read more here.

In the SITRANS FM520 system (FMS500 + FMT020), you can rely on high measurement precision:

The SITRANS FMS500 is engineered for long-term stability. With no moving parts and a maintenance-free design, it delivers repeatable, drift-free measurements for many years — even in harsh environments.

SITRANS FMS500 is designed to allow in-situ verification for health check with SITRANS Verificator. Regular calibration is therefore not required.

SITRANS FMT020 transmitter provides device diagnostics, empty pipe monitoring and integrated self-verification.

Yes. SITRANS FM520 is suitable for billing application and complies with MI-001 and OIML R-49 requirements.

Brochure | SITRANS FMT020-New-Generation Flowmeters