The FT702 is probably the most tested wind sensor in the world. It has passed over 28 independent tests including sand, dust, ice, vibration, corrosion, hail and lightning protection.
The FT742 and FT722 will be tested to these same standards before release. As they are built to the same high standards as the FT702, we fully expect them to pass these tests. The FT742 has already passed the FT Highly Accelerated Life Cycle test in which the sensor is temperature cycled from +125°C to -90°C whilst being vibrated at 30g rms.
In addition, all our wind sensors are 100% wind tunnel checked before despatch to ensure that they will give many years of reliable service, even in the harshest conditions. The wind tunnel is calibrated annually and sensors are regularly selected from production and their calibration cross-checked in a MEASNET wind tunnel. This ensures the accuracy of FT wind sensors.