1. Keeping Data Recovery Levels High – Combating Fire and Ice and an Occasional Bird
Mark T. Carroll
Andrew J. Lotz
Heather A. McDonald
Jeffrey J. Daley

2. Temperature/Delta-T Spiking

3. Temperature/Delta-T Spiking

4. Wind Direction Spiking
Early signs of potentiometer failure

5. Potentiometer Failure

6. Dew Point Failure During Cold Weather

7. Dew Point Spikes

8. Wildlife Affecting Wind Speed
Birds or Owls?

9. Wildlife Near Wind Speed

10. Aspirator Failure

11. Aspirator Failure

12. False Precipitation Data
Real vs. Signal Conditioning Problem

13. False Precipitation Data

14. Faulty Precipitation Readings
Voltage loss vs. gain during precipitation

15. False Precipitation Data

16. Wind Speed Bearing Failure
Trace signature at low wind speeds

17. Bearing Failure

18. Power Failure

19. Power Failure

20. Power Failure

21. Power Supply Failure

22. Power Supply Failure

23. Power Supply Failure

24. Power Supply Failure

25. Power Supply Failure

26. Dew Point During Rain
>100% Humidity

27. Dew Point During Rain

28. Partial Failure of Equipment (WD)
Lightning Strike
Partial Failure of Equipment (WD)

29. Lightning Strike

30. Lightning Strike

31. Sensor Icing

32. Upper Wind Speed Icing

33. Ice Falling From Tower

34. Gunshot Damage

35. Gunshot Damage

36. Questions?