Purposes and features：
The GSJ-B series of gale alarm, designed by our institution according to wind protection requirements of the crane, is a wind-speed acquisition and control system specially used together with the crane and the crane wind-proof equipment. Two groups of optionally settable relay output signals are provided where necessary, so as to automatically control the crane and the crane wind-proof equipment.
Measurement precision: ±0.3 （V——measured data of the wind-speed）
Measuring range: 1~60m/s （m/s——wind-speed）
Source voltage: 220V （alternating）
Data sheet of installation drawing：
1,Instrument with length of 160, width of 80 and height of 80 is mounted on the wall or the desktop through the transitional mounting board.
2,The wind-speed sensor (wind cup) is fixed in the unshielded high place through the M12 shaft hole (or the shaft transiting to M12).