source : https://en.nong-iot.com/news/4.html time : 2020-03-30
FK-W crawler crane wireless wind speed alarm instrument product overview: FK-W wireless wind speed measurement and control instrument is a wireless measurement and control product developed by Ruiyan Zhihua Company for special engineering machinery, aerial work and other fields. Combining advanced sensors and short-range wireless communication technology with data processing and control technology. It completely eliminates the wiring troubles of the installers, and the transmission distance can reach 2Km / 1Km (line of sight).
The device is mainly composed of two parts: wireless wind speed sensor and measurement and control instrument.
Wireless wind speed sensor power supply options: AC220V, DC5V, DC12V, DC24V measurement and control instrument power supply options: AC220V, DC12V, DC24V
Working current: 250mA at DC12V (depending on the power of wireless transmission);
Wireless wind speed sensor DC12V 30-80mA (varies according to the power of wireless transmission);
Power consumption: DC12V≤5W
Alarm wind speed: 5-39m / s adjustable;
Wind speed at power failure: 6-40m / s can be adjusted (power failure delay is about 2 seconds to avoid power failure caused by instantaneous wind speed);
Control contact capacity: AC220V / 10A;
Working mode: continuous;
Load output: Relay transmission distance: 1Km (line-of-sight), the work site depends on the actual shielding situation.