NRG's #40C is a MEASNET-calibrated anemometer primarily intended for wind prospecting applications. A four-pole magnet induces a sine wave voltage into a coil producing an output signal with frequency proportional to wind speed. This signal is measured by our data loggers. The #40C is constructed of Lexan. A rubber terminal boot is included. In February 2008, the #40C replaced the #40 anemometer.
|Measurement Description||Wind speed|
|Signal Type/Output||Low-level ac sine wave (pulse)|
|Operating Temperature Range||-55° to +60°C|
|Operating Relative Humidity||0 to 100% RH|
|Starting Threshold||0.78 m/s (1.75 mph)|
|Range||1 to 96 m s-1|
|Cup Distance Constant||3.0 m (10 ft) 63% recovery|
|Cup Diameter||5.1 cm (2 in.)|
|Swept Diameter of Rotor||19.0 cm (7.5 in.)|
|Overall Assembly Height||5.1 cm (3.2 in.)|
|Weight||0.1 kg (0.2 lb)|
Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.
The #40C is measured by the PulseCount instruction in CRBasic and by Instruction 3 (Pulse Count) in Edlog. The #40C uses one pulse count channel on the data logger.