USA - SITRANS FS230 clamp-on ultrasonic flow meter

Clamp-on Ultrasonic Flow Meter

The SITRANS FS230 digital clamp-on ultrasonic flow meter offers a process-optimizing solution for measuring flow in virtually any typical or hazardous area fluid application. The FS230 provides rugged and industry-leading performance with cost savings in both purchasing and operation. It works as a non-intrusive interface detector and is designed for oil applications requiring differentiation between changing liquids in a pipeline as well as determination of liquid quality. The FS230 clamp-on flow meter is ideal for industries requiring high-quality liquid flow measurement, such as hydrocarbon, chemical, water and wastewater, HVAC, power, food and beverage, pharmaceutical, mining, and pulp and paper.

SITRANS FS230 Catalog Specifications

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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 1.0% of flow rate for all liquids/pipe sizes and repeatability of 0.25% according to ISO 11631
  • Available internal AGA 9 gas tables - Simplifying correction for temperature and pressure variations in gas flow
  • Industry-leading 100 Hz data update rate – Detects even the smallest variations in flow 100 times a second
  • Three resettable totalizers - Allowing simultaneous totalizing for daily, monthly and annual lease production
  • Easy to read and use graphic Human Machine Interface (HMI) – Offers intuitive menu-driven navigation as well as step-by-step setup and troubleshooting wizards, with up to 6 user-configurable views on display at a time
  • SensorFlash® internal, non-volatile data storage – Stores settings, calibration/ datalogger information and certificates for easy servicing and increased uptime
  • Versatile sensors  – Requires little to no maintenance and can be installed on pipes as small as 0.5 inches and as large as 394 inches (33ft) without issue


Technical specifications

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.

Operation and Instruction Manuals


Updated Hazardous Area Approvals
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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)
Conductive and non-conductive liquids
Pipe sizes
12.7 mm to 10 m (0.5" to 394")
Sensor materials


Size A/B: Polyetherimide, stainless steel, aluminum (optional)

Size C/D: Polyetherimide, stainless steel

Size A/B: Polyetherimide, stainless steel, aluminum (optional)

Size C/D: Polyetherimide, stainless steel

High-Temperature: Stainless steel

Temperature range


WideBeam®: -40 to 120 °C (-40 to 250 °F)

Universal: -40 to 120 °C (-40 to 250 °F)

High-Temperature: -40 to 230 °C (-40 to 450 °F)

Pipe material

WideBeam®: Steel and carbon steel

Universal: Most non-steel

High-Temperature: Steel and non-steel

FM, ATEX and IECEX (Zone 0, 1 and 2)

This three part video series will walk you through the SITRANS FS230 set-up

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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.

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

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Process Safety

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 F S 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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