C3 and PV1 Wind Sensors
The accurate and durable C3 anemometer and PV1 wind vane have been used globally for utility scale wind farm site assessment for over 10 years. Their accuracy and reliability are recognized for producing bankable data, which is critical for securing funding for utility scale projects. Originally marketed through Second Wind, they were sold in conjunction with the Nomad2 and other dataloggers.
Second Wind was acquired by Vaisala in 2013, and the products continued to be marketed through Vaisala as the C3.1 and PV1.1 (Internal Vaisala part numbers are 426-0015 and 425-0006 respectively). In 2018 Vaisala discontinued marketing of the Nomad3 datalogger and peripherals.
Comptus is the original equipment manufacturer of the sensors, and continues to manufacture them under the A75-104 anemometer and A75-302 wind vane model numbers. Though the distinctive “blue boot” is no longer available, the sensors continue to be used across industries around the world.
In addition to the C3.1 / A75-104 sine wave anemometer, Comptus also manufactures a reed switch version of the sensor; model number A75-101. Both the A74-104 and A75-101 are available with calibration from industry recognized wind tunnels.