It is a new generation of intelligent digital anemometer; which can detect the average speed of wind in the working environment where flammable and explosive mixed gases exist with the characteristics of direct-reading display, high precision, data saving , convenient to adjust and operate etc. Model 1, cfjd5 measurement range (0.3-5)m/s; tolerance 0.2m/s; starting air-velocity =0.2m/s; Explosion-proof type Exib i 2, cfjd25 measurement range (0.5-25)m/s; tolerance 0.3m/s; starting air-velocity =0.4m/s; explosion-proof type Exib I