TENMARS TM-402 多功能风速仪 (0.4~25 (m/s)/ ±2﹪+0.2)

30mm 6 plastics vane
Light air response 0.4m/s
Air flow calculate function.
Max/Min/Avg and data hold.
Memory capacity: 99 records.
Memory recall function.
Backlight function.
Absolute Pressure Sensor
Humidity Sensor 
Velocity (Air Speed):
+ m/s: 0.4~25/ 0.1/ ±2﹪+0.2
+ Km/hr(kph): 1.5~90/ 0.1/ ±2﹪+0.8
+ mph: 0.9~55/ 0.1/ ±2﹪+0.4
+ Knots(kts): 0.8~48/ 0.1/ ±2﹪+0.4
+ ft/min(fpm): 79~4921/ 1/ ±2﹪+40
+ Beaufort: 1~10/ 1     
Air Flow Calculation:
+ CMM: 0~9999
+ CFM: 0~9999
Temperature: -20~60 ℃