The SITRANS FS230 digital clamp-on ultrasonic flowmeter is a process-optimizing solution for measuring flow in virtually any liquid application. Designed to provide both exceptional performance and outstanding cost savings, the FS230 is an ideal fit for many industries requiring high-quality liquid flow measurement. The SITRANS FS230 flow system consists of a SITRANS FST030 transmitter paired with SITRANS FSS200 clamp-on ultrasonic sensors, which are available in three different models: WideBeam® (High-Precision), Universal and High-Temperature.

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SITRANS FS230 with Ex approval is built to meet the toughest demands of the hydrocarbon industry.


One of the world’s first digital ultrasonic flow systems, the FS230 features among others:

  • Market-leading accuracy and repeatability – accuracy of 0.5 to 1% of flow rate and repeatability of 0.25% according to ISO 11631
  • Best-in-class 100 Hz data update rate – detects even the smallest, most rapid fluctuations in flow
  • Digital Sensor Link (DSL) – digitizes the signal at the earliest stage of measurement for a strong signal-to-noise ratio and high-precision measurement
  • Simplified installation – multiple setup wizards guide you through every step of commissioning
  • Easy-to-use Human Machine Interface (HMI) – fully graphical display with simple menu navigation and the option to display up to 6 customizable parameters at once
  • Hazardous area approved – Suitable for use in explosive areas

Technical specifications

SITRANS FST030 wall-mount transmitter

SITRANS FSS200 clamp-on ultrasonic sensors

Wall mount enclosure, 1- or 2-path
HART 7.5 or Modbus; compatible with SIMATIC PDM
IP66/67, NEMA 4X rating
Up to 6 channels combining analog, relay or digital outputs and binary input + RTD
Full graphical display, 240 x 160 pixels
Power supply
20 to 27 V DC, 100 to 240 V AC, 47 ... 63 Hz (universal power supply)
FM, FMc, ATEX and IECEx, UL, ULc, CE

Typical applications: Chemical and oil industry, Water and wastewater, HVAC and power, food and beverage, pharmaceutical, mining and pulp and paper.

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To remain competitive, companies in industry must ensure – and ideally increase – the availability and productivity of machines and plants. As your partner, we offer a unique range of services and support based on our extensive technology and industry expertise.

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As your partner, we offer a unique range of services and support based on our extensive technology and industry expertise. With our offerings, you can expect a high degree of reliability and a successful digital future for your company.

Well trained for excellent handling

Receive standardized or individual expertise directly from the manufacturer – with training centers in more than 60 countries.

Safety integrated

Safety is key in the process industries. A failure in instruments relevant for safety may have serious implications for humans, the process and the environment. Therefore, a wide range of our process instruments come with on-board safety features for maximum risk reduction.


Whatever your process challenge – SITRANS FS has you covered

Monitoring your processes with accurate clamp-on ultrasonic flow measurement leads to higher transparency, improved productivity – and a better bottom line. To optimize every operation, Siemens offers a comprehensive selection of clamp-on flow sensors, transmitters and complete flow systems.

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