I can't scan the calibration cap, what do I do?

If the Scanner cannot scan the calibration cap, keep in mind that the calibration cap is sensitive to dirt and friction. Therefore it is usually caused by dirt, damage, or incorrect positioning of the cap or scanner. Follow the steps below before contacting support. 

Possible reasons for a failed calibration

1. Check the position of the calibration cap. 

   The Scanner can be placed on 3 positions on the yellow side of the calibration cap. Try placing the Scanner on all three positions and attempt the calibration again. In some cases, changing the position resolves the issue.

    

2. Check if the Scanner glass is clean and not damaged

   Inspect the glass window and sensor probes on the bottom of the Scanner. If dirt or soil particles are present, clean the EC probes and glass using the cleaning brush.

   Use the cleaning cloth or wipe to remove remaining particles. Make sure no soil or dust remains as even small particles can affect calibration.

    

3. Check the calibration cap

   Inspect both sides of the calibration cap to see if both white and yellow sides are clean. 

   White side: The white side should be clean and free of dust or soil. To clean:

   1. Use a clean cloth with clean water only.  

   2. Wring out excess water. 

   3. Gently wipe the white surface clean. 

   4. Allow the cap to dry completely before using it again. 

    

   Yellow side: The yellow side contains sensitive fibers used for calibration. Please note that the yellow side should in essence remain clean and never get dirty as cleaning it can result to damaging the cap. If really necessary, wipe with a clean wet cloth towards the grain (that the yellow fibers do not come undone).

   1. Make sure the fibers are not loose or damaged.

   2. If the yellow side is heavily dirty or damaged, the calibration cap may need to be replaced.

   3. Check if cleaning products were used on the calibration cap. Cleaning products might be left behind on the cap and influence the spectra, hence leading to an error message. 

    

4. Check the application

   If the scanner and calibration cap both look fine, check the application. Reset the scanner and reinstall the app on the phone, which might sometimes also resolve problems.

    

5. Check if the base of the scanner, including the knobs, is dirty.

   To clean the base of the scanner, use a clean cloth and water. Wipe the base of the scanner clean. For the E and earlier version scanners, make sure there is no dirt between the glass covering the LED lights and the plastic next to it.

   Make sure to brush the dirt off the knobs as well.

    

6. Check if the cap is faulty.

   When the Scanner calibration process fails, an error message is always displayed in the application. This error message describes the error and offers a solution/ fix to the error. 

   Example: Error: H32

   Error description: Calibration cap is dirty.

   Error fixing: Use the cleaning brush to eliminate soil from the metal EC probes and the glass until almost all particles are removed. Use the wipe cleaning tissue to remove the small particles and make sure no dirt can be observed on EC probes and glass anymore. Re-scan (white) background followed by sample and afterwards the (yellow) standard sample.

   Note: always follow the instructions given in the error message and if the error pops up numerous times, escalate the issue to support via support@agrocares.com.

    

7. Check if it's old firmware 

   An old firmware check is requested when the calibration error messages are frequent, in which case a firmware update request is sent to support. 

   This request is sent to support when the agent is escalating the calibration cap issue. To escalate the issue, you must provide the Scanner ID and describes the issues in detail.

If all the above-mentioned options do not solve your calibration cap error, please contact our support by sending an email to support@agrocares.com.