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Automated Calibration Setup for pHFine Scale sensor

Automated Calibration Setup for pHFine Scale sensor. Team pHFine Scale By Ethan Kurteff. In the blue tank, an artificial seawater solution (8.05 pH) is mixed. This and distilled water are added ----------------- > here. 8.05 pH.

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Automated Calibration Setup for pHFine Scale sensor

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  1. Automated Calibration Setup for pHFine Scale sensor Team pHFine Scale By Ethan Kurteff

  2. In the blue tank, an artificial seawater solution (8.05 pH) is mixed. This and distilled water are added -----------------> here 8.05 pH

  3. The solution is distributed to the yellow and purple tanks, with the help of pumps (shown in brown) where it is mixed with hydrochloric acid, and sodium hydroxide to create a relatively acidic solution(7.10 pH) and a relatively basic solution (9.20 pH), respectively.  HCL NaOH 7.10 pH 9.20 pH

  4. Each of these three solutions are pumped into the orange tank, where they, one after another, have their pH and temperature measured to extreme precision with a colorimetric pH sensor, and team pHFine scale's glass electrode sensor. This is repeated for a slightly warmer version of each solution, to give a basis for temperature compensation, for a total of six independent measurements. Induction heaters raise the temperature of each solution by a few degrees, after the initial three measurements are taken Glass Electrode Sensor Each solution is drained after measurement 1st 2nd 3rd Colorimetric pH sensor

  5. The colorimetric sensor uploads its data to the glass electrode sensor, to give it a basis for calibration. A Bluetooth transmitter (the black box) logs data, such as number, time and ID of sensors calibrated, to a smartphone, which then uploads it to a data logging server. Alternatively, a direct internet connection could be utilized. Calibration Data Transfer Data To Smartphone Bluetooth Transmitter Waste Tank

  6. Artificial Seawater Solids Glass Electrode Sensor Visual Representation

  7. Distilled Water Visual Representation

  8. Visual Representation

  9. HCl Visual Representation

  10. NaOH Visual Representation

  11. Calibration Data Transfer Visual Representation

  12. Visual Representation

  13. Calibration Data Transfer Visual Representation

  14. Visual Representation

  15. Calibration Data Transfer Visual Representation

  16. Visual Representation

  17. Temperature is raised slightly by internal induction heaters Visual Representation

  18. Process is repeated with the increased temperatures Calibration Data Transfer Visual Representation

  19. Visual Representation

  20. Calibration Data Transfer Visual Representation

  21. Visual Representation

  22. Calibration Data Transfer Visual Representation

  23. Visual Representation

  24. Data Broadcast To Smartphone Visual Representation

  25. Description and 3D model available at: www.thingiverse.com/thing:446118

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