Needle probe
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. As 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.
Technical data:
| 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 16 MPa, 230 °C |
| Series E: up to 16 MPa, 300 °C |