2-point Adjustment with Indigo - INDIGO201 - GMP251 - INDIGO202

GMP251 User Guide
Document code
M211799EN
Revision
G
Language
English (United States)
Product
GMP251
Document type
User guide
To make a 2-point adjustment, you need a low reference and a high reference (select references that are near the low and high ends of your measurement range). Prepare the calibration references (for example, reference gases with known concentrations) before starting the adjustment.
To make a 2-point adjustment with Indigo wireless configuration interface:
  1. Open the wireless configuration interface in the browser of your wireless device and open the Calibration menu.
  2. Start the calibration mode with the Start calibration button.
  3. If you need to set environmental compensations, enable and set the required compensations on the Configuration tab.
  4. Remove any possible previous adjustments by restoring the factory adjustment: select Restore factory adjustment for each parameter you are adjusting.
  5. Enter the calibration date and calibration information into the corresponding text fields.
  6. Place the probe in the first reference environment (adjustment point 1) and wait until the measurement has stabilized.
  7. Enter the value of the first reference (for example, 0 if calibrating with a 0 ppmCO2 reference gas) into the Reference value, point 1 field.
  8. After you enter the reference value, the value of the Measured value, point 1 field updates automatically.
  9. Place the probe in the second reference environment (adjustment point 2) and wait until the measurement has stabilized.
  10. Enter the value of the second reference (for example, 2000 if calibrating with a 2000 ppmCO2 reference gas) into the Reference value, point 2 field.
  11. When both reference points have been entered, select Store adjustment to save the adjustment.
  12. Close the calibration mode with the Stop calibration button.
  13. To check that the adjustment was carried out correctly, review the information in the Adjustment data fields at the bottom of the view.