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ATI field calibration

ATI field calibration. Prepared by Robert Albee , NOAA, Boulder, CO. Sonic Axis definations. W axis response used for temperature calculations. HyperTerminal. Connect with settings 9600, 7, E, 1. Data flow display once connected. U axis, V axis, W axis, Temperature C.

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ATI field calibration

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  1. ATI field calibration Prepared by Robert Albee , NOAA, Boulder, CO

  2. Sonic Axis definations W axis response used for temperature calculations

  3. HyperTerminal Connect with settings 9600, 7, E, 1

  4. Data flow display once connected U axis, V axis, W axis, Temperature C

  5. Keystroke the “Esc” key The Main Menu should appear. Be extremely careful at this point. This is keystroke driven and mistakes could occur.

  6. Choose “D” for Calibration

  7. Keystroke Y (no echo in my case) This would be the air temperature of inside the box. Do the best you can, but not critical. Try to stay within +- .5C if possible. Humidity +- 2% is also acceptable.

  8. Place “Zero-Air Chamber” on Axis Using rubber / elastic bands to secure box works quite well.

  9. Choose Axis W is chosen with this demonstration

  10. 1 Axis Calibration Complete Perform this task with all 3 axis’ . “Enter Key” returns to Menu.

  11. After completion choose number 0 to exit.

  12. Data flow This demonstrates an acceptable W axis with the box still attached with calculated temperature.

  13. Thank-you for your dilligence and hard work! It may be noticable after a few days the calculated temperature may drift. This is not of great concern since that is not a reflection of wind turbulent measurements.

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