Flow measurement instruments

Non-custody transfer measurement and process monitoring

Your Benefits

  • Reliable flow measurement for checking purposes
  • Simple installation into existing pipelines
  • Efficient solution, especially for pipe diameters over 12 inches, thanks to installation onto existing pipelines and without need for a meter body
  • Reduced acquisition costs – the sensor extraction tool can be used for multiple devices
  • Low maintenance, wear and no deterioration
  • Low operating costs thanks to automated diagnostics and condition-based maintenance
  • Suitable for installation in underground compartments via remote electronics and sensors with enclosure rating IP 68

The exact device specifications and performance data of the product may deviate from the information provided here, and depend on the application in which the product is being used and the relevant customer specifications.
In accordance with Article 2 (4), this product does not fall within the scope of RoHS directive 2011/65/EU and is also not designed for use in products which fall within the scope of this directive. You can find additional information in the product information.


Non-custody transfer measurement and process monitoring

The FLOWSIC300 ultrasonic flowmeter features a unique combination of high quality components, large measuring range, simple installation, and low installation costs. It can be used anywhere where custody approval is not required: For internal measurements in the natural gas grid and with process measurements in the petrochemical industry. The FLOWSIC300 incorporates proven technology and components of the rugged custody transfer quality gas flow meters from SICK for custody transfer and combines these to produce a cost-effective flowmeter for a variety of applications. The measuring transducer at a distance of up to 15 m away from the measuring point facilitates a high level of flexibility in installation and includes continuous self-diagnostics. The ultrasonic measurement principle does not generate any pressure loss, has no moving parts, is resistant to pulsations and pressure regulator noise and is ideal for reliable and practically drift-free operation.

At a glance
  • Quality components
  • Modular flexible installation
  • Non-contact ultrasonic technology without pressure loss
  • Measuring range span greater than 100 : 1
  • Sensors can be replaced under pressure
  • Low sensitivity to pulsation and pressure regulator noise
  • Remote electronics (max. 15 m)
  • Bi-directional measurement with automated diagnostics


LinkedIn Logo

Follow expert discussion in our LinkedIn Forum

SICK expert group: gas flow measurement and fiscal metering


Technical overview

  • Technical data overview

    Technical data overview

    Measured valuesVolumetric flow a. c., volume a. c., gas velocity, sound velocity
    Measurement principleUltrasonic transit time difference measurement
    Number of measuring paths1, 2
    Hazardous area



    Measuring rangesDepending on the nominal size of the pipe
    Measuring spanMax. 1:130
    Gas temperature–40 °C ... +180 °C
    Operating pressure10 bar (g) ... 100 bar (g)
    Nominal pipe size4 ″ ... 56 ″
    Enclosure rating

    Sender/receiver units: IP68

    SPU control unit: IP65 / IP67

    Modbus✔ , ✔
    Type of fieldbus integrationASCII RS-485
    RTU RS-485
All technical data can be found accompanying the individual product