Section 3 Mechanical Installation & Lightning Protection
27 FT722 & FT742 (RS485) – FF & PM Sensors – User Manual
Figure 18: Pipe Mount Sensor and Adapter (all dimensions in mm)
Alignment
The sensor measures the wind direction relative to the 180° rear datum feature (see Figure 19). The pipe mount
system is designed for fitting to a vertical pipe. The datum feature can be used in combination with a laser tool to
ensure correct alignment and spirit level to ensure that the top of the adapter is flat. The position of the adapter
can be adjusted to remove any misalignment if the pipe is constructed slightly off vertical. Once the adapter is
aligned correctly the 4 bolts at the bottom of the adapter are used to lock it securely to the pipe, preventing further
movement.
The sensor can only fit on top of the adapter in one orientation. If the sensor needs replacing, this can be done
without having to realign the adapter.
When the wind sensor is correctly aligned the wind direction measurements will be as shown in Figure 19.
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