Double eliminator - MaxEmerge™ 5 vacuum seed meters
Double eliminator installed in MaxEmerge 5 meter

Double eliminator installed in MaxEmerge 5 meter

For difficult to singulate seeds, a flat seed disk and double eliminator is a viable alternative to traditional cell-type seed disks. By design, a flat seed disk requires higher levels of vacuum than a cell-type disk because there is no pocket or cell to hold the seed. The higher vacuum level will pull more than one seed to the holes in the seed disk. The double eliminator is set to cover a portion of the hole in the seed disk and is the mechanism to knock multiple seeds away as the disk rotates. 
 
Double eliminators are required with flat-type seed disks only and should not be used with cell-type seed disks. The knockout wheel is also recommended in conjunction with the double eliminator and flat seed disk to ensure seed is ejected from the disk.
Double eliminator adjustment
 
MaxEmerge double eliminator adjustment knob

MaxEmerge double eliminator adjustment knob

Double eliminator numbered dial

Double eliminator numbered dial

The MaxEmerge 5 vacuum meter has an external, adjustable double eliminator. This double eliminator uses a knob with numbers to indicate where it should be set for different crops. This feature makes achieving a high level of singulation easier and more consistent.
 
The adjustment knob is capable of 21 unique positions. The dial is numbered zero through ten in increments of one, but the gearing allows for half increment adjustments as well.
 
Adjustment time for this double eliminator is estimated to be 10 seconds per row-unit, with repeatable results. This means that adjustment can be made three times faster than Pro-Series™ XP units, and eight times faster than MaxEmerge XP units.
 
Because flat seed disks require higher vacuum levels, planters with 12 row-units or more require two vacuum blower motors. In addition to vacuum blower requirements, 0-cm to 76.2-cm (0-in. to 30-in.) mechanical vacuum gauges would also be needed to monitor the elevated vacuum.
 
Last Updated : 16-Sep-2021