Weight Tare Warnings

8 Nov 2024

Causes

• Interference with weigh bucket. Bucket may be misaligned our outside of tracks.  
• The wind blowing against the Graingage can cause up to .5 lb of error, depending on speed and direction.
• GrainGage not having or improperly installed wind guards.
• Bad Load Cell
• Tare Warning level set to low or to zero.

Fixes

• Ensure the weigh bucket of the GrainGage is in the tracks.
• Clean inside the bucket, around the bucket, and around the load cells of the GrainGage with compressed air. 
• Ensure there is nothing putting postive or negative tension on the weigh bucket/load cells (air hoses, cables, overload protection pin, etc.)
• Apply negative and positive pressure to the bucket while watching the weight values in Diagnostics. Remove the pressure to ensure the weight returns to zero. Do this several times to ensure repeatability.
• Put the HarvestMaster calibration weight in the bucket with the top gate closed and check it against the calibration weight in Diagnostics.
• Check to ensure the Load Cell 1 millivolts and Load Cell 2 millivolts move when weight is applied and are stable when static.
• If a problem is identified with one load cell from step 6, try swapping Load Cell 1 with Load Cell 2 at the DSP module to see if the problem follows the load cell or the port on the module.
• We recommend the retare threshold be set no lower than .25 lb. The default setting is .5 lb. This will ensure that you do not receive a false tare error.
• Install wind guard.

When the tare check occurs between plots, it typically does not use the full "weigh time" when checking tare. The tare check reading is worst case scenario and it should not be assumed the tare error is the same as the systems recorded plot weight error.

For further assistance, contact the HarvestMaster Field Service Engineers.

• Phone Number: 435-753-1881
• Email: hmtechsupport@junipersys.com