Which Wind sensor require calibration and maintenance?
Each sensor has different calibration requirements.
Always refer to the calibration procedure of your sensor manual or alternatively return the equipment to the sensor manufacturer for repair or calibration.
Repairs to the sensors are usually only practicable in a workshop.
Detecting anemometer deterioration
In the field, anemometers are prone to deterioration and regular inspections are advisable. A change in sensor characteristics leading to a deterioration in wind data quality may occur as a result of physical damage, an increase in bearing friction from the ingress of dust, corrosion, or degradation of the transduction process.
Inspection faults as indicated by incorrect zero position, stepped traces due to friction, noise, low sensitivity, will typically induce irregular or reduced recorded wind measurements.
Ultrasonic sensors are generally maintenance free as they do not have any moving part.