Simple, sturdy, and precise Heated Needle Anemometer
Wind speed monitoring in greenhouses
Point wind speed determination
Wind speed determination in all types of plant canopies
Low wind speed monitoring
Range: 0 to 15 m/sec
Accuracy: ±20 cm/s
Dimensions: Head is 25 x 13 x 13 mm, Needle is 60mm x 1.27mm diameter
Temperature Sensor: 10K Precision Thermistor
Material: Epoxy and Delrin Head, stainless steel needle
Cable length: 2m standard (additional cable length available upon request)
The East 30 Sensors anemometer uses a durable configuration with a stainless steel needle. To take a measurement, a baseline temperature is recorded, followed by a precisely timed heating step, during which temperature is recorded. The difference is then taken between the baseline temperature and the final temperature. By using the same heating time and monitoring the change in temperature, wind speed can be calculated.
What you need
This anemometer is very simple and robust, requiring only simple programming for use with a Campbell Scientific Data logger.
In the Package
Calibrated easy to use anemometer, needing only a simple program to run with a CSI data logger. This anemometer is accurate over a large range, from 0-15 m/sec, requires no further calibrations, and is not sensitive to wind direction. Sample programs for use with Campbell Scientific Dataloggers are available upon request.
Bland, W. L., Norman, J. M., Campbell, G. S., Calissendorf, C., & Miller, E. E. A transiently heated needle anemometer. Agricultural and Forest Meteorology Volume 74, Issues 3–4, May 1995, Pages 227-235
R. M. Aiken,* D. C. Nielsen, and L. R. Ahuja. Scaling Effects of Standing Crop Residues on the Wind Profile. Agronomy Journal, Vol. 95, July–August 2003
Savage, M. J. (2014) Microclimate conditions in ventilated wet-walled greenhouses in a subtropical climate: spatial variability, South African Journal of Plant and Soil, 31:3, 137-143, DOI: 10.1080/02571862.2014.921942