STT113 TOWER CRANE OPERATION AND SERVICE MANUAL
8B
-
16
VII.
ANEMOSCOPE
1. Technical specifications
1.1 Power source
：
48VAc/50Hz;
1.2 starting wind speed≤1.5m/s;
1.3 display≤±3%;
2. Site humidity ranges
2.1 wind speed detector
：
-40--+50
℃
；
0--100%RH
2.2 display
：
-20--+50
℃
；
0-70%RH
。
3. Operation principals and instructions for use
3.1 Operation principals
The wind sensor and the display are powered by three power cables. When
the wind sensor sends out a pulse proportionate to the wind speed, the pulse is
rearranged by the electric circuit board into DC electricity. Then the current is
magnified and fed into the display to show the wind speed. A dedicated circuit
board, processes the signal, which then powers 201 LEDs. The alarm sounds
when the wind speed reaches the limit.
3.2 Instructions for use
Before applying electricity, connect the sensor with the display using the
included power cable. Screw tightly. When electricity is applied, you can
instantly read the wind speed and magnitude. The display has ft/s and m/s
readings. green, the operating zone; yellow, the caution zone; and red, the
danger zone. When the crane is rising, set the limit to 20. When the wind
speed exceeds the above limits, an alarm will be set and the relay will cut the
power. When the wind speed is back under the limit, operation can resume as
normal.
