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Needle probes for local gas holdup measurement

With our needle probes you can in a simple way measure local gas holdup in transient multiphase flows. Our needle probes are pressure-tight up to 16 MPa and temperature-resistant up to 300°C. The electrical conductivity measurement principle also allows studies with ionic tracer solutions, for instance, to measure residence time distributions and liquid dispersion parameters. Thermo-needle probes can be used for the simultaneous measurement of local phase fraction and fluid temperature at the needle tip in one position in a flow. Like our wire-mesh sensors they achieve data acquisition rates of up to 10,000 samples per second, which is fully sufficient to analyze even very fast multiphase flows.

Learn more about how the needle probe works

Technical Details

  • Simple mounting by compression fitting
  • High-speed sampling up to 10 kHz
  • Probe tips down to 100 µm diameter
  • Operating conditions: Series S: up to 230 °C, Series E: up to 300 °C
  • Pressure: up to 16MPa.
Service: Gas and Liquid Holdup with Needle probes

Contact for Requests

Eckhard Schleicher, Experimental Thermal Fluid Dynamics

Phone: +49 351 260 3230



Uwe Pöpping, Innovation Manager Fluid Dynamics

Phone: +49 351 260 2397