METEOROLOGICAL INSTRUMENTS INSTRUCTIONS PROPELLER ANEMOMETER MODEL 27106T R.M. YOUNG COMPANY 2801 AERO PARK DRIVE, TRAVERSE CITY, MICHIGAN 49686, USA TEL: (231) 946-3980 FAX: (231) 946-4772 WEB: www.youngusa.
INTRODUCTION MODEL 27106T GILL PROPELLER ANEMOMETER The Gill Propeller Anemometer is a low threshold precision air velocity sensor employing a fast response helicoid propeller. The instrument uses a high quality tech-generator transducer which converts propeller rotation to a DC voltage that is linearly proportional to air velocity. The output signal is suitable for a wide range of signal translators and data logging devices.
CALIBRATION Replace bearings as follows: Calibration is determined by propeller pitch and the output characteristics of the tach-generator. 1. Both Model 08274 Expanded Polystyrene Propeller and Model 08254 Carbon Fiber Thermoplastic Propeller have a 29.4 cm/rev pitch. This is equivalent to 0.0049 m/s per rpm and is accurate to ±1%. Zero offset is insignificant. Formulas for other units of measurement appear on the calibration chart included with this manual.
ADDITIONAL REFERENCES WARRANTY References containing additional information about the Gill Propeller Anemometer are listed below in chronological order: This product is warranted to be free of defects in materials and construction for a period of 12 months from date of initial purchase. Liability is limited to repair or replacement of defective item. A copy of the warranty policy may be obtained from R. M. Young Company. Holmes, R. M., Gill, G. C., and Carson, H. W.
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