The Davis anemometer 6410 is one of the best devices for measuring wind speed and direction currently on the market. If you need a high quality, reliable device as part of a broader weather monitoring system, then this is definitely one of the best options to consider.
The technological aspects of this device are sure to bring any weather station to the next level. It contains measurement devices to record both wind speed and direction and comes with a cable so that it can be easily connected to the home base station. What’s more, it can be wirelessly integrated into the system using the integrated transmitter kit. This means you can place your anemometer anywhere you like, within a 1000 ft radius of the integrated suite center. This gives the user great flexibility and ability to customize the weather station set-up.
The operating conditions of the device are as follows:
Operating Temperature: -40to +149 (-40to +65)
Sensor Type Wind Speed : Solid state magnetic sensor
Sensor Type Wind Direction: Wind vane and potentiometer
Attached Cable Length : 40′ (12 m)
Cable Type : 4-conductor, 26 AWG Connector
Maximum Cable Length.: 240′ (73 m)
The solid state sensor gives you great precision and accuracy when it comes to your wind speed measurements. Furthermore, this equipment is know to be reliable and will stand up to a wide variety of battering weather conditions. The resolution and accuracy of the sensor outputs (including wind speed and wind direction, are well known and are provided in the following table.
Wind Direction Display Resolution : 16 points (22.5 on compass rose, 1in numeric display
Accuracy : ±3
Wind Speed Resolution and Units : Measured in 1 mph. Other units are converted from mph and rounded to nearest 1 km/h, 0.1 m/s, or 1 knot
Range : 1 to 200 mph, 1 to 173 knots, 0.5 to 89 m/s, 1 to 322 km/h
Accuracy : ±2 mph (2 kts, 3 km/h, 1 m/s) or ±5%, whichever is greater
Maximum Cable Length: 240′ (73 m). Maximum wind speed reading decreases as length of cable from Anemometer to ISS increases. At 140′ (42 m), maximum speed is 135 mph (60 m/s). At 240′, the maximum is 100 mph.
The accuracy and degree of resolution on this instrument is unrivaled, given the relative affordability of this device. It should be noted that the device can operate in a wide range of wind conditions (up to 200 mph winds) and the wind speed can be displayed in a number of different units, for maximum convenience. The maximum wind speed detectable decreases as the cable is unraveled, so for optimal performance the anemometer should be places as close to the integrated sensor suite as possible.
The input and output connections are as follows:
Black: Wind speed contact closure to ground
Green : Wind direction pot wiper (20KΩ potentiometer)
Yellow : Pot supply voltage
Wind Speed Translation Formula : 1600 rev/hr = 1 mph V = P(2.25/T) (V = speed in mph, P = no. of pulses per sample period T = sample period in seconds)
Wind Direction Translation: Variable resistance 0 – 20KΩ; 10KΩ = south, 180