1/7/2024 0 Comments Anemometer weather![]() The ultrasonic transducers can be seen in the underside of the upper element of the sensor head. Mounting the unit is described in detail in the instruction manual to ensure that the unit is accurately aligned north-south as a direction reference. The recess on the bottom of the sensor head fits on to the primary pole, which can then be attached to a larger main mounting pole to locate the anemometer at the preferred measurement height. The 6415 anemometer consists of two parts – the sensor head itself (see image above and which has an overall height of about 120mm or 5″) and then a short (300mm) and slim (16mm) primary mounting pole (not shown). Note though that this type of anemometer may be less suitable for locations with very cold winter (temperatures regularly below eg -20☌). The DZP unit has excellent linearity over its wind speed measurement range of 1 – 40 m/s (approx 1 – 90 mph). (An individual calibration certificate is available at extra cost.) It is relatively unobtrusive and has a simple modernistic shape, which is also less likely to attract unwelcome attention Īll 6415 anemometers benefit from individual wind-tunnel testing prior to despatch from the factory and are supplied with a one-year RTB warranty. ![]() For locations where visual appearance or intrusion is important, the 6415 unit will always win out over a traditional anemometer.Absence of a dead zone for direction around the 360° point.A low start-up speed of 1mph (the actual DZP start-up speed is lower still at 0.3mph but VP2 stations have a minimum resolution of 1mph).Because they sense air movements directly rather than via mechanical parts (which cannot avoid responding with at least some lag), ultrasonic anemometers are able to be significantly more responsive and sensitive to wind gusts.As a result these anemometers are more suitable for use at eg coastal locations Similarly there is no direction potentiometer to wear and no reed switches to become faulty Ultrasonic anemometers are maintenance-free and have no moving parts to wear over time – there are of course no wind cups or wind vane and hence no mechanical bearings to deteriorate, causing increasing inaccuracy with age.Their key advantage is the lack of any moving parts (they operate by measuring the transit characteristics of ultrasound pulses across their sensor transducers), which provides several benefits: Ultrasonic anemometers have many benefits compared to the traditional mechanical anemometer such as the standard Davis 6410 model. The 6415 unit represents the ultimate option for wind measurements in the VP2 class of weather station. Prodata is pleased to offer this Davis 6415 ultrasonic anemometer, a drop-in replacement for the standard 6410 anemometer on Davis VP2 stations. Davis Ultrasonic available from our online shop!
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