FLOWSIC100 Flare Gas Flow Measuring Instrument

Brand: Sick AG

The FLOWSIC100 Flare product family is designed for flare gas and steam flow measurements.

The product family is characterized by a unique flow-optimized sensor design.

This innovative design minimizes flow-generated noise and signal drift when gas velocities are particularly high.

Modern signal processing and high-efficiency transducers enable high time resolution for signals and thus deliver accurate measurements, even at extremely low gas flow rates.

The standard system configuration includes two sender/receiver units or one measuring probe and the MCUP control unit.

The MCUP unit is used to input and output signals; to calculate reference values (normalization), molecular weight and mass flow; to record gas volumes; and to provide user-friendly control via the LCD display.
  • Reliable process control due to exact measurement near the zero point
  • High measurement availability even in the case of emergency shutdowns with gas velocities of up to 120 m/s
  • A solution for the measurement of flare gas and steam injection
  • Cost savings due to detached installation of the control unit possible in the safe area
  • System solution for the control of three different measuring points with a common control unit
  • Cost savings due to one-sided installation when using FLOWSIC100 EX-PR probe version
  • Optimal device performance due to continual function monitoring and extended diagnostic functions in the field



Certifications & Approvals

  • CE
  • cCSAus
  • IECEx
  • ATEX

Enclosure Rating

  • IP67
  • IP66
  • IP65
  • IP20
  • Type 4

Measured Value

  • Sound Velocity
  • Mass Flow Rate, Molecular Weight, Volumetric Flow a. c., Volumetric Flow s. c.
  • Gas Volume and Mass
  • Gas Temperature
  • Gas Velocity

Hazardous Area

  • 1G, 2G, 3G, Class I, Div. 1, Class I, Div. 2, Ga, Gb, Gc

Gas Temperature

  • Not for FLOWSIC100 EX/EX-RE Zone 1 and Class I, Div. 1
  • Low Temperature: -196° to 100° C
  • High-Temperature Zone 2: -70° to 260° C
  • High-Temperature Zone 1: -70° to 280° C
  • Standard: -70° to 180° C

Operating Pressure

  • FLOWSIC100 EX-S 90°: -0.5 to 19 bar(g)
  • -0.5 to 16 bar(g)

Nominal Pipe Size

  • 4” to 72”


  • HART
  • Modbus
  • Ethernet
  • RS-232 / RS-485
  • USB
  • FOUNDATION Fieldbus
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