The 03101 is the three-cup anemometer included with our Wind Sentry Sets. You can purchase it separately if your application requires only wind speed measurements. The 03101 connects directly to a Campbell Scientific data logger, which measures the anemometer's pulse signal and converts the signal to engineering units (mph, m/s, knots).
Read MoreThe 03101 uses a cup wheel assembly to measure wind speed. Rotation of the cup wheel produces an ac sine wave that is directly proportional to wind speed. The frequency of the ac signal is measured by a data logger pulse count channel, then converted to engineering units (mph, m/s, knots). Campbell Scientific’s version uses shielded bearings, which lowers the anemometer’s threshold.
Sensor | 3-cup anemometer |
Measurement Description | Wind speed |
Range | 0 to 50 m/s (112 mph) |
Gust Survival | 60 m/s (134 mph) |
Sensor | 12-cm diameter cup wheel assembly, 40-mm diameter hemispherical cups |
Accuracy | ±0.5 m/s (1.1 mph) |
Turning Factor | 75 cm (2.5 ft ) |
Distance Constant | 2.3 m (7.5 ft) 63% recovery |
Starting Threshold | 0.5 m/s (1.1 mph) |
Transducer | Stationary coil (1300 ohm nominal resistance) |
Output Frequency | 1 cycle per cup wheel revolution (0.75 m/s per Hz) |
Transducer Output | AC sine-wave signal induced by rotating magnet on cup wheel shaft 100 mV peak-to-peak at 60 rpm (6 V peak-to-peak at 3600 rpm) |
Operating Temperature Range | -50° to +50°C (assumes non-riming conditions) |
Cup Wheel Diameter | 12 cm (4.7 in.) |
Height | 23.4 cm (9.2 in.) |
Weight | 113 g (4 oz) |
The 03101 anemometer is supplied with a galvanized 10-in.-long x ¾-in. IPS threaded pipe, which mounts to a crossarm via a CM220 mount or 1049 Nu-Rail fitting. The 03101 can also be mounted to the top of a CM106B or a stainless-steel tripod via the CM216.
An ideal application for the Wind Sentry is wind profile studies. For this application, the LLAC4 4-channel Low Level AC Conversion Module can be used to increase the number of anemometers measured by one data logger. The LLAC4 allows data logger control ports to read the anemometer’s ac signals instead of using pulse channels. Data loggers compatible with the LLAC4 are the CR200(X)-series (ac signal ≤1 kHz only), CR800, CR850, CR1000, CR3000, and CR5000.
The 03101 uses one pulse count channel on the data logger.
The 03101 is read by the PulseCount Instruction in CRBasic and by Instruction 3 (Pulse Count) in Edlog. Wind speed measurements can be taken and processed with any of the data loggers.
Number of FAQs related to 03101-L: 11
Expand AllCollapse All
We've updated our privacy policy. Learn More
Update your cookie preferences. Update Cookie Preferences