Inaccurate Moisture or NIR Constituent Data
8 Nov 2024
Causes
- Lab moisture meter not reading correctly or not calibrated to lab moisture meter
- Not enough grain to fill the test cup assembly
- Moisture blade or NIR dome has trash or debris on it
- Defective moisture or NIR sensor
Fixes
- Check to ensure you are meeting the minimum weight threshold (see below).
- Inspect and clean the moisture blade or SCiO sensor glass dome (use soft cotton cloth, soap, and water) .
- Touch the blade while watching the change in moisture readings within Diagnostics.
- Check moisture temperature to ensure it is within 5–10 degrees of the ambient air temperature.
- Check the supply voltage to ensure it is between 12 and 14 volts.
- Check to ensure the moisture blade (inside chamber) and sensor mounting screws are secure.
The minimum weight threshold is the minimum amount of grain required for accurate moisture and test weight data. By default, if the minimum weight threshold is not met, moisture and test weight data will be recorded as zero and/or not included in the plot average when taking sub-samples.
To ensure the plots are yielding enough grain to measure accurate data,
- Go to Setup > Info > Chamber Info.
- If the minimum weight threshold value is outside 2–6 lb., recalibrate the test weight for the chamber calibration.
- If you are not harvesting enough grain to meet the minimum weight threshold, install low yield inserts and recalibrate the chamber. For more information about low yield inserts, see the H2 GrainGage Hardware Manuals.
- If installing low yield inserts doesn’t work, you can either lower the chamber head room or override the minimum weight threshold. If you do this, the test weight measurements should be verified.
If the problem persists, contact the HarvestMaster Field Service Engineers. For contact information, see Contact a HarvestMaster Field Service Engineer.
- Phone Number: 435-753-1881
- Email: hmtechsupport@junipersys.com
- Address: 1132 W 1700 N, Logan, UT 84321
