Flow Diagnostics >> Tao Systems

Hot-Film Constant Voltage Anemometer

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    The multi-channel Hot-Film Constant Voltage Anemometer (HF-CVA) is specifically for making simultaneous shear stress measurements using hot-film sensors.

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      The HF-CVA eliminates problems associated with the use of conventional anemometry, i.e. constant current anemometer (CCA) and constant temperature anemometer (CTA), in wind tunnel facilities. Some of these problems are electromagnetic (EMI) and radio frequency (RFI) interference resulting in a low signal-to-noise ratio (SNR), the need to use precise-length shielded cables, and the need to tweak the instrument for every new flow condition. The HF-CVA solves these technical issues, while substantially improving the performance:

      • higher sensitivity
      • large bandwidth (30kHz)
      • virtual immunity to EMI/RFI
      • no critical adjustments at each flow condition
      • cable lengths and type not a significant issue