1. Before use, observe whether the pointer of the meter points to the zero point. If there is any deviation, adjust the mechanical adjustment screw of the meter lightly to make the pointer return to the zero point; 2. Put the calibration switch in the OFF position
. Insert the plug of the measuring rod into the socket, place the measuring rod vertically upward, press the screw plug to seal the probe, set the "calibration switch" to the full scale position, and slowly adjust the "full scale adjustment" knob so that the pointer of the meter points at full scale. degree position;
4. Set the "calibration switch" to "zero position", and slowly adjust the two knobs of "coarse adjustment" and "fine adjustment", so that the pointer of the meter points to the zero position
5. After the above steps, gently pull the screw plug to expose the probe of the measuring rod (the length can be selected as needed), and make the red dot on the probe face the wind direction. measured wind speed;
6. After measuring for a few minutes (about 10 minutes), the above steps 3 and 4 must be repeated once to standardize the current in the meter
7. After the test, the "calibration switch" should be placed in the off position.
