Description
Propel anemometer 27106 – 27106T – a precision instrument
The Propel anemometer 27106 – 27106T from RM Young is a precision, single-axis wind measuring instrument.
The device uses a fast-response helicoid propeller and high-quality tach-generator transducer to produce a DC voltage that is linearly proportional to airspeed. Airflow from any direction can be measured, but the propeller responds only to that portion of the airflow that is parallel to its axis of rotation. Off-axis response closely approximates a cosine curve of appropriate polarity; with vertical airflow, the propeller does not rotate. The output signal is suitable for a wide range of signal translators and data loggers. The standard Model 27106 with expanded polystyrene (EPS) propeller provides maximum sensitivity at low wind speeds. An optional Model 27016T with carbon fiber thermoplastic (CFT) propeller is available for greater range and durability.
Model 27106 – Specifications
08274 Expanded Polystyrene Propeller (EPS):
- Diameter: 22 cm
- Pitch: 29.4 cm wind passage per revolution
- Range: 0-25 m/s (55 mph)
- Threshold: * 0.3 m/s (0.6 mph)
- Distance constant: * 1.0 m (3.2 ft)
Signal output:
- Standard: tach-generator transducer – analog DC voltage proportional to wind component. Polarity indicates direction of rotation. 1800 rpm (500 mV) = 8.8 m/s (19.7 mph).
- Optional: Photochopper transducer, 10 pulses/revolution 1800 RPM (300 Hz) = 8.8 m/s (19.7 mph).
Power requirements:
- Standard: Anemometer with revolution generator is self-powered.
- Optional: Photochopper anemometer requires 5-15 VDC at 11mA.
Dimensions:
- 43 cm (17”) long w/mount, 2.5 cm (1”) housing diameter Propeller diameter: (see above)
- Mount: ¾” pipe thread adapter with MS connector (connects to anemometer)
Weight:
- 0.5 kg (1.1 lbs), shipping weight 1 kg (2.2 lbs)
Model 27106T – Specifications
08254 Carbon Fiber Thermoplastic Propeller (CFT):
- Diameter: 20 cm
- Pitch: 30.0 cm wind passage per Rotation
- Range: 0-35 m/s (80 mph)
- Threshold: * 0.4 m/s (0.8 mph)
- Distance constant: * 2.1 m (6.9 ft)
Signal output:
- Standard: tach-generator transducer – analog DC voltage proportional to wind component. Polarity indicates direction of rotation. 1800 rpm (500 mV) = 9.0 m/s (20.1 mph).
- Optional: Photochopper transducer, 10 pulses/revolution 1800 rpm (300 Hz) = 9.0 m/s (20.1 mph).
Power requirements:
- Standard: Anemometer with rotation generator is self-powered.
- Optional: Anemometer with photochopper requires 5-15 VDC at 11mA.
Dimensions:
- 43 cm (17”) long w/mount, 2.5 cm (1”) housing diameter Propeller diameter: (see above)
- Mount: ¾” pipe thread adapter with MS connector (connects to anemometer)
Weight:
- 0.5 kg (1.1 lbs), shipping weight 1 kg (2.2 lbs)
* Nominal values determined in accordance with ASTM standard procedures. Specifications are subject to change without notice.
