Calibration tests conducted in a towing tank and a rectangular duct indicated that the calibration coefficient of a Simplex pitot-static probe was significantly affected by flow velocity (Reynolds number), tube vibration and wall-proximity. The performance of five designs of pressure-difference velocity probes, as alternates to replace the Simplex probes, were tested using a wind tunnel and a towing tank. An effective replacement probe for the Simplex design is suggested.

92-15: Calibration Characteristics of a Simplex Pitot-Static Probe and Five

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  • R.N. Partghasarathy, Robert Ettema & V.C. Patel, Iowa Institute of Hydraulic Research