Constant Temperature Anemometry Solutions
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Flow Field Diagnostics Constant Temperature Anemometry Solutions Nndva INSTRUMENTS

Boundary layer hotwire probe with gold-plated sensors.

Turbulence diagnostics is an important step in research and development because it has great impact in numerous applications from aerodynamics to passenger comfort. Hotwire anemometers provide the best spatial and temporal resolution for turbulence investigations. Constant Temperature Anemometry (CTA) CTA is a well-established point measurement technique with commercial systems available for several decades. Application areas include temperature, shear stress, velocity and turbulence measurements in e.g. jets, boundary layers, transitional flows. Even though the CTA technique is intrusive...

The CTA measurement principle is based on heat transfer from a heated sensor. The CTA measurement principle is based on the cooling of small sensors placed in the flow: The temperature (resistance) of the sensor is kept constant by an advanced feedback control loop that contains an electronic bridge circuit. This way, the anemometer produces a continuous voltage that is proportional to the instantaneous flow velocity. The output signal is sampled with high resolution so the flow velocity is determined accurately both in the amplitude domain and in the frequency domain. StreamLine Pro - the...

StreamLine Pro Automatic (Air) Calibrator. Water Calibrator. An accurate CTA measurement requires an accurate calibration. With decades of experience Dantec Dynamics has designed an automatic and a manual calibrator for air applications and a water calibrator. The air calibrators are able to produce speeds up to Mach 1 and the water calibrator up to 2 m/s, and the calibrators are delivered with exchangable nozzles to cover their individual velocity range. All calibrators are compatible with the Pitch/Yaw – Roll (PYR) manipulators, which are required for directional calibrations. Directional...

Triaxial Parallel-flow probe with gold-plated wire sensors. Triaxial cross-flow probe with fiber-film sensors. Dantec Dynamics has a comprehensive probe program. The hotwire and hotfilm probes are a result of more than half-a-century design and manufacturing experience. The product range is complete with accessories: probe supports, mounting tubes and guide tubes. Dantec’s probe manufacturing precision manifests itself during directional calibration events. For multi-sensor probes, the sensors should be placed perpendicular to each other in space to achieve a balanced directional...

StreamWare Pro software has a modern look and an intuitive interface, which guides the user through system configuration, hardware setup, probe calibration, and data acquisition. StreamWare Basic and StreamWare Pro are dedicated software platforms that help the user to design, organize and document CTA measurements as well as post process the results. StreamWare Basic supports MiniCTA and Multichannel CTA systems, and StreamWare Pro supports the StreamLine system family. They perform hardware set-up, automatic probe calibration, data acquisition, conversion and reduction. Raw and reduced...

About Dantec Dynamics Dantec Dynamics is the leading provider of laser optical measurement systems and sensors. Since 1947 we have provided solutions for customers to optimize their component testing and products. Our large number of customers benefit from our quality solutions within: Fluid Mechanics Spray and Particle Characterization Combustion Diagnostics 3D Shape Deformation, Strain and Vibration Measurement Strain and Stress Measurement DISATAC Tachometers Thermal Comfort Worldwide representation From our six offices and more than 30 representatives worldwide we approach our customers...