Gas flow measuring instruments
FLOWSIC100 Process

Your Benefits

  • Reliable and accurate measurement even at low gas velocities
  • Low-maintenance, as no moving parts
  • Measurement is independent of pressure, temperature, and gas composition
  • Does not affect gas flow, as non-contact measurement
  • Approved for use in zone 2 explosive environments(ATEX)
  • User-friendly operation and device diagnosis via MCU control unit and SOPAS ET operating software

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.


With the FLOWSIC100 Process gas flow measurement devices, measurements can be taken at pressures up to 16 bar – even in zone 2 explosive environments. The sender/receiver units are available as hermetically sealed designs made of stainless steel or titanium. The standard system contains an MCU control unit and 2 sender/receiver units or a single measuring probe. The MCU is used for signal input and output and to calculate reference values (standardization) or mass flow. It also serves as a user-friendly LCD interface.

At a glance
  • Corrosion-resistant transducer made of stainless steel or titanium
  • Up to 16 bar process pressure
  • Explosion-protected design for applications in zone 2 (ATEX) available
  • Hermetically sealed ultrasonic transducer
  • Measurements practically free of pressure loss and without influencing the process
  • Automated operational check with zero and reference point test


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Technical overview

  • Technical data overview

    Technical data overview

    Measured valuesGas velocity, Mass flow rate, volumetric flow a. c., volumetric flow s. c., sound velocity, gas temperature
    Measurement principleUltrasonic transit time difference measurement
    Hazardous area3G
    Gas temperature–40 °C ... +260 °C
    Operating pressure–0.5 bar ... 16 bar
    Depending on device version
    Nominal pipe size0.15 m ... 1.7 m
    Depending on device version
    Enclosure ratingIP65
    FunctionConnection to SOPAS ET software
    Serial✔ , ✔
    Type of fieldbus integrationRS-232
    FunctionConnection to SOPAS ET software
    Internal system bus
    Type of fieldbus integrationVia optional interface module
    Modbus✔ , ✔ , ✔
    Type of fieldbus integrationASCII RS-485 (via optional interface module)
    RTU RS-485 (via optional interface module)
    TCP (via optional interface module)
    Type of fieldbus integrationVia optional interface module
    Type of fieldbus integrationVia optional interface module
    Foundation Fieldbus
    Type of fieldbus integrationVia optional interface module
    Diagnostics functions

    Automatic check cycle for zero and span point

    Extended device diagnosis via SOPAS ET software

All technical data can be found accompanying the individual product