portable power supply environmental requirements
(1) the working environment temperature: 0 to 45 degrees Celsius.
(2) working environment Humidity: <= 90% RH (no condensation)
3. Power supply
(1) power supply voltage: 4.5 V 5 # dry batteries 3
(2) the average power consumption current: <= 5 MMA (power supply of 4.5 V)
4. Size & Weight
(1) form factor: 400 MMX100MMX100MM
(2) Weight: 0.5 KG
3. Principle
1. Wind speed parts: the wind speed sensor used is the traditional three glasses of rotating frame. Will transform into wind-speed rotation. Start to reduce the wind speed, the use of special materials and light wind Cup stones bearing support. Through fixed in the rotating racks will be installed by the sensor detection signals transmitted to the mainframe within the calculations.
SCM instruments on the wind sensor output signal sampling, calibration, calculation, the final output from the apparatus instantaneous wind speed / 1 minute average wind speed / wind-instantaneous / one minute at an average wind / wind-average corresponding waves five parameters. measured parameters in the liquid crystal display devices using digital direct displayed.
In order to reduce the power consumption equipment, instruments and sensors have adopted a series of SCM drop-generation power special measures. Order to ensure a reliable data, when the supply voltage is too low, the display showed marked lower battery power shortage, suggesting that Supply voltage is too low data users have been unreliable and the need for timely replacement of the battery
