World Grain - May 2007 - 39

GRAINOPERATIONS

the entire product stream, withdrawing a cross-section of the stream. This
process is repeated periodically during the product flow to withdraw multiple cross-sections and obtain samples
spaced evenly throughout the lot of the
product.
Usually installed in vertical or sloped
gravity spouts or at the discharges of
belt conveyors, cross-cut samplers
withdraw a relatively large amount of
product from the stream. In fact, the
amount taken is far too large to test and
grade, so a sample divider is used to
take the product extracted by the main
cross-cut sampler and further divide
it to get the resulting sample down to
a workable size. The divider splits the
stream from the cross-cut into a final
sample stream of about 5% to 10% of
the total sample flow, with the balance
being excess sample for return to the
main product flow.
The excess sample must be returned
at a location that does not affect the
weighing of the lot. The return location must not be dusty enough to cause
plugging of the sample lines.
SELECTION
Some characteristics of cross-cut
samplers are fairly standard between
manufacturers, therefore the choice
of the sampler usually centers on the
planned installation geometry as well
as manufacturer-specific features.
Samplers installed in the spout are
often preferred because they are cheaper, simpler and usually easier to install.
My experience has also been that belt
samplers have more opportunity for
distorted samples due to failure, misadjustment or idiosyncrasy in the product flow.
After you have narrowed your choice
to models that will physically fit, consider the construction of the sampler
itself. Diverters and seals that are fully
or partially protected from grain flow
when not sampling will be more durable, as will models with smooth surfaces rather than steps in the spouting.
The sealing mechanism for the di-

verter opening should be protected and
durable, as well as easy to inspect and
change. Pay careful attention to the
size of the sealing area and the tolerance available for the "parking" position. Travel limits on samplers tend
to be somewhat finicky to set, and a
larger parking tolerance makes this
easier.

Inspect the switch mechanism used
to set the travel and understand its adjustment and operation. Also, check the
construction of the drive mechanisms
and the access to them.
Samplers where the diverter remains
relatively square to the product stream
as it travels across are recommended
over diverters that rotate in a relatively

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For more information, see Page 82.

www.World-Grain.com / World Grain / May 2007

39


http://www.World-Grain.com

World Grain - May 2007

Table of Contents for the Digital Edition of World Grain - May 2007

Contents
World Grain - May 2007 - 1
World Grain - May 2007 - 2
World Grain - May 2007 - 3
World Grain - May 2007 - Contents
World Grain - May 2007 - 5
World Grain - May 2007 - 6
World Grain - May 2007 - 7
World Grain - May 2007 - 8
World Grain - May 2007 - 9
World Grain - May 2007 - 10
World Grain - May 2007 - 11
World Grain - May 2007 - 12
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World Grain - May 2007 - 15
World Grain - May 2007 - 16
World Grain - May 2007 - 17
World Grain - May 2007 - 18
World Grain - May 2007 - 19
World Grain - May 2007 - 20
World Grain - May 2007 - 21
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World Grain - May 2007 - 24
World Grain - May 2007 - 25
World Grain - May 2007 - 26
World Grain - May 2007 - 27
World Grain - May 2007 - 28
World Grain - May 2007 - 29
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World Grain - May 2007 - 31
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World Grain - May 2007 - 33
World Grain - May 2007 - 34
World Grain - May 2007 - 35
World Grain - May 2007 - 36
World Grain - May 2007 - 37
World Grain - May 2007 - 38
World Grain - May 2007 - 39
World Grain - May 2007 - 40
World Grain - May 2007 - 41
World Grain - May 2007 - 42
World Grain - May 2007 - 43
World Grain - May 2007 - 44
World Grain - May 2007 - 45
World Grain - May 2007 - 46
World Grain - May 2007 - 47
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World Grain - May 2007 - 82
World Grain - May 2007 - 83
https://digital.world-grain.com/sosland/wg/world-grain-october-2024
https://digital.world-grain.com/sosland/wg/world-grain-september-2024
https://digital.world-grain.com/sosland/wg/world-grain-august-2024
https://digital.world-grain.com/sosland/wg/world-grain-july-2024
https://digital.world-grain.com/sosland/wg/world-grain-june-2024
https://digital.world-grain.com/sosland/wg/world-grain-may-2024
https://digital.world-grain.com/sosland/wg/world-grain-april-2024
https://digital.world-grain.com/sosland/wg/world-grain-march-2024
https://digital.world-grain.com/sosland/wg/world-grain-february-2024
https://digital.world-grain.com/sosland/wg/world-grain-january-2024
https://digital.world-grain.com/sosland/wg/world-grain-december-2023
https://digital.world-grain.com/sosland/wg/world-grain-november-2023
https://digital.world-grain.com/sosland/wg/world-grain-october-2023
https://digital.world-grain.com/sosland/wg/world-grain-september-2023
https://digital.world-grain.com/sosland/wg/world-grain-august-2023
https://digital.world-grain.com/sosland/wg/world-grain-july-2023
https://digital.world-grain.com/sosland/wg/world-grain-june-2023
https://digital.world-grain.com/sosland/wg/world-grain-may-2023
https://digital.world-grain.com/sosland/wg/world-grain-april-2023
https://digital.world-grain.com/sosland/wg/world-grain-march-2023
https://digital.world-grain.com/sosland/wg/world-grain-february-2023
https://digital.world-grain.com/sosland/wg/world-grain-january-2023
https://digital.world-grain.com/sosland/wg/world-grain-december-2022
https://digital.world-grain.com/sosland/wg/world-grain-november-2022
https://digital.world-grain.com/sosland/wg/world-grain-october-2022
https://digital.world-grain.com/sosland/wg/world-grain-september-2022
https://digital.world-grain.com/sosland/wg/world-grain-august-2022
https://digital.world-grain.com/sosland/wg/world-grain-july-2022
https://digital.world-grain.com/sosland/wg/world-grain-june-2022
https://digital.world-grain.com/sosland/wg/world-grain-may-2022
https://digital.world-grain.com/sosland/wg/world-grain-april-2022
https://digital.world-grain.com/sosland/wg/world-grain-march-2022
https://digital.world-grain.com/sosland/wg/world-grain-february-2022
https://digital.world-grain.com/sosland/wg/world-grain-january-2022
https://digital.world-grain.com/sosland/wg/world-grain-december-2021
https://digital.world-grain.com/sosland/wg/-world-grain-november-2021
https://digital.world-grain.com/sosland/wg/world-grain-october-2021
https://digital.world-grain.com/sosland/wg/world-grain-september-2021
https://digital.world-grain.com/sosland/wg/world-grain-august-2021
https://digital.world-grain.com/sosland/wg/world-grain-july-2021
https://digital.world-grain.com/sosland/wg/world-grain-june-2021
https://digital.world-grain.com/sosland/wg/world-grain-may-2021
https://digital.world-grain.com/sosland/wg/world-grain-april-2021
https://digital.world-grain.com/sosland/wg/world-grain-march-2021
https://digital.world-grain.com/sosland/wg/world-grain-february-2021
https://digital.world-grain.com/sosland/wg/2021_01_01
https://digital.world-grain.com/sosland/wg/2020_12_01
https://digital.world-grain.com/sosland/wg/2020_11_01
https://digital.world-grain.com/sosland/wg/2020_10_01
https://digital.world-grain.com/sosland/wg/2020_09_01
https://digital.world-grain.com/sosland/wg/2020_08_01
https://digital.world-grain.com/sosland/wg/2020_07_01
https://digital.world-grain.com/sosland/wg/2020_06_01
https://digital.world-grain.com/sosland/wg/2020_05_01
https://digital.world-grain.com/sosland/wg/2020_04_01
https://digital.world-grain.com/sosland/wg/2020_03_01
https://digital.world-grain.com/sosland/wg/2020_02_01
https://digital.world-grain.com/sosland/wg/2020_01_01
https://digital.world-grain.com/sosland/wg/2019_12_01
https://digital.world-grain.com/sosland/wg/2019_11_01
https://digital.world-grain.com/sosland/wg/2019_10_01
https://digital.world-grain.com/sosland/wg/2019_09_01
https://digital.world-grain.com/sosland/wg/2019_08_01
https://digital.world-grain.com/sosland/wg/2019_07_01
https://digital.world-grain.com/sosland/wg/2019_06_01
https://digital.world-grain.com/sosland/wg/2019_05_01
https://digital.world-grain.com/sosland/wg/2019_04_01
https://digital.world-grain.com/sosland/wg/2019_03_01
https://digital.world-grain.com/sosland/wg/2019_02_01
https://digital.world-grain.com/sosland/wg/2019_01_01
http://digital.world-grain.com/sosland/wg/2018_12_01
http://digital.world-grain.com/sosland/wg/2018_11_01
http://digital.world-grain.com/sosland/wg/2018_10_01
http://digital.world-grain.com/sosland/wg/2018_09_01
http://digital.world-grain.com/sosland/wg/2018_08_01
http://digital.world-grain.com/sosland/wg/2018_07_01
http://digital.world-grain.com/sosland/wg/2018_06_01
http://digital.world-grain.com/sosland/wg/2018_05_01
http://digital.world-grain.com/sosland/wg/2018_04_01
http://digital.world-grain.com/sosland/wg/2018_03_01
https://www.nxtbook.com/sosland/wg/2018_02_01
https://www.nxtbook.com/sosland/wg/2018_01_01
https://www.nxtbook.com/sosland/wg/2017_12_01
https://www.nxtbook.com/sosland/wg/2017_11_01
https://www.nxtbook.com/sosland/wg/2017_10_01
https://www.nxtbook.com/sosland/wg/2017_09_01
https://www.nxtbook.com/sosland/wg/2017_08_01
https://www.nxtbook.com/sosland/wg/2017_07_01
https://www.nxtbook.com/sosland/wg/2017_06_01
https://www.nxtbook.com/sosland/wg/2017_05_01
https://www.nxtbook.com/sosland/wg/2017_04_01
https://www.nxtbook.com/sosland/wg/2017_03_01
https://www.nxtbook.com/sosland/wg/2017_02_01
https://www.nxtbook.com/sosland/wg/2017_01_01
https://www.nxtbook.com/sosland/wg/2016_12_01
https://www.nxtbook.com/sosland/wg/2016_11_01
https://www.nxtbook.com/sosland/wg/2016_10_01
https://www.nxtbook.com/sosland/wg/2016_09_01
https://www.nxtbook.com/sosland/wg/2016_08_01
https://www.nxtbook.com/sosland/wg/2016_07_01
https://www.nxtbook.com/sosland/wg/2016_06_01
https://www.nxtbook.com/sosland/wg/2016_05_01
https://www.nxtbook.com/sosland/wg/2016_04_01
https://www.nxtbook.com/sosland/wg/2016_03_01
https://www.nxtbook.com/sosland/wg/2016_02_01
https://www.nxtbook.com/sosland/wg/2016_01_01
https://www.nxtbook.com/sosland/wg/2015_12_01
https://www.nxtbook.com/sosland/wg/2015_11_01
https://www.nxtbook.com/sosland/wg/2015_10_01
http://digital.world-grain.com/sosland/wg/2015_09_01
http://digital.world-grain.com/sosland/wg/2015_08_01
http://digital.world-grain.com/sosland/wg/2015_07_01
http://digital.world-grain.com/sosland/wg/2015_06_01
http://digital.world-grain.com/sosland/wg/2015_05_01
https://www.nxtbook.com/sosland/wg/2015_04_01
https://www.nxtbook.com/sosland/wg/2015_03_01
https://www.nxtbook.com/sosland/wg/2015_02_01
http://digital.world-grain.com/sosland/wg/2015_01_01
http://digital.world-grain.com/sosland/wg/2014_12_15
https://www.nxtbook.com/sosland/wg/2014_12_01
https://www.nxtbook.com/sosland/wg/2014_11_01
https://www.nxtbook.com/sosland/wg/2014_10_01
https://www.nxtbook.com/sosland/wg/2014_09_01
https://www.nxtbook.com/sosland/wg/2014_08_01
https://www.nxtbook.com/sosland/wg/2014_07_01
https://www.nxtbook.com/sosland/wg/2014_06_01
https://www.nxtbook.com/sosland/wg/2014_05_01
https://www.nxtbook.com/sosland/wg/2014_04_01
https://www.nxtbook.com/sosland/wg/2014_03_01
https://www.nxtbook.com/sosland/wg/2014_02_01
https://www.nxtbook.com/sosland/wg/2014_01_01
https://www.nxtbook.com/sosland/wg/2013_12_01
https://www.nxtbook.com/sosland/wg/2013_11_01
https://www.nxtbook.com/sosland/wg/2013_10_01
https://www.nxtbook.com/sosland/wg/2013_09_01
https://www.nxtbook.com/sosland/wg/2013_08_01
https://www.nxtbook.com/sosland/wg/2013_07_01
https://www.nxtbook.com/sosland/wg/2013_06_01
https://www.nxtbook.com/sosland/wg/2013_05_01
https://www.nxtbook.com/sosland/wg/2013_04_01
https://www.nxtbook.com/sosland/wg/2013_03_01
https://www.nxtbook.com/sosland/wg/2013_02_01
https://www.nxtbook.com/sosland/wg/2013_01_01
https://www.nxtbook.com/sosland/wg/2012_12_01
https://www.nxtbook.com/sosland/wg/2012_11_01
https://www.nxtbook.com/sosland/wg/2012_10_01
https://www.nxtbook.com/sosland/wg/2012_09_01
https://www.nxtbook.com/sosland/wg/2012_08_01
https://www.nxtbook.com/sosland/wg/2012_07_01
https://www.nxtbook.com/sosland/wg/2012_06_01
https://www.nxtbook.com/sosland/wg/2012_05_01
https://www.nxtbook.com/sosland/wg/2012_04_01
https://www.nxtbook.com/sosland/wg/2012_03_01
https://www.nxtbook.com/sosland/wg/2012_02_01
https://www.nxtbook.com/sosland/wg/2012_01_01
https://www.nxtbook.com/sosland/wg/2011_12_01
https://www.nxtbook.com/sosland/wg/2011_11_01
https://www.nxtbook.com/sosland/wg/2011_10_01
https://www.nxtbook.com/sosland/wg/20111_09_01
https://www.nxtbook.com/sosland/wg/2011_08_01
https://www.nxtbook.com/sosland/wg/2011_07_01
https://www.nxtbook.com/sosland/wg/2011_06_01
https://www.nxtbook.com/sosland/wg/2011_05_01
https://www.nxtbook.com/sosland/wg/2011_04_01
https://www.nxtbook.com/sosland/wg/2011_03_01
http://digital.world-grain.com/sosland/wg/2011_02_01
http://digital.world-grain.com/sosland/wg/2011_02_01
http://digital.world-grain.com/sosland/wg/2011_02_01
http://digital.world-grain.com/sosland/wg/2011_01_01
http://digital.world-grain.com/sosland/wg/2010_12_01
http://digital.world-grain.com/sosland/wg/2010_11_01
http://digital.world-grain.com/sosland/wg/2010_10_01
http://digital.world-grain.com/sosland/wg/2010_09_01
http://digital.world-grain.com/sosland/wg/2010_08_01
http://digital.world-grain.com/sosland/wg/2010_07_01
http://digital.world-grain.com/sosland/wg/2010_06_01
http://digital.world-grain.com/sosland/wg/2010_05_01
http://digital.world-grain.com/sosland/wg/2010_04_01
http://digital.world-grain.com/sosland/wg/2010_03_01
http://digital.world-grain.com/sosland/wg/2010_02_01
http://digital.world-grain.com/sosland/wg/2010_01_01
http://digital.world-grain.com/sosland/wg/2009_12_01
http://digital.world-grain.com/sosland/wg/2009_11_01
http://digital.world-grain.com/sosland/wg/2009_10_01
http://digital.world-grain.com/sosland/wg/2009_09_01
http://digital.world-grain.com/sosland/wg/2009_08_01
http://digital.world-grain.com/sosland/wg/2009_07_01
http://digital.world-grain.com/sosland/wg/2009_06_01
http://digital.world-grain.com/sosland/wg/2009_05_01
http://digital.world-grain.com/sosland/wg/2009_04_01
http://digital.world-grain.com/sosland/wg/2009_03_01
http://digital.world-grain.com/sosland/wg/2009_02_01
http://digital.world-grain.com/sosland/wg/2009_01_01
http://digital.world-grain.com/sosland/wg/2008_12_01
http://digital.world-grain.com/sosland/wg/2008_11_01
http://digital.world-grain.com/sosland/wg/2008_10_01
http://digital.world-grain.com/sosland/wg/2008_09_01
http://digital.world-grain.com/sosland/wg/2008_08_01
http://digital.world-grain.com/sosland/wg/2008_07_01
http://digital.world-grain.com/sosland/wg/2008_06_01
http://digital.world-grain.com/sosland/wg/2008_05_01
http://digital.world-grain.com/sosland/wg/2008_04_01
http://digital.world-grain.com/sosland/wg/2008_03_01
http://digital.world-grain.com/sosland/wg/2008_02_01
http://digital.world-grain.com/sosland/wg/2008_01_01
http://digital.world-grain.com/sosland/wg/2007_12_01
http://digital.world-grain.com/sosland/wg/2007_11_01
http://digital.world-grain.com/sosland/wg/2007_10_01
http://digital.world-grain.com/sosland/wg/2007_09_01
http://digital.world-grain.com/sosland/wg/2007_08_01
http://digital.world-grain.com/sosland/wg/2007_07_01
http://digital.world-grain.com/sosland/wg/2007_06_01
http://digital.world-grain.com/sosland/wg/2007_05_01
http://digital.world-grain.com/sosland/wg/2007_04_01
http://digital.world-grain.com/sosland/wg/2007_03_01
http://digital.world-grain.com/sosland/wg/2007_02_01
http://digital.world-grain.com/sosland/wg/2007_01_01
http://digital.world-grain.com/sosland/wg/2006_12_01
http://digital.world-grain.com/sosland/wg/2006_11_01
http://digital.world-grain.com/sosland/wg/2006_10_01
http://digital.world-grain.com/sosland/wg/2006_09_01
http://digital.world-grain.com/sosland/wg/2006_08_01
http://digital.world-grain.com/sosland/wg/2006_07_01
http://digital.world-grain.com/sosland/wg/2006_06_01
http://digital.world-grain.com/sosland/wg/2006_05_01
http://digital.world-grain.com/sosland/wg/2006_04_01
http://digital.world-grain.com/sosland/wg/2006_03_01
http://digital.world-grain.com/sosland/wg/2006_02_01
http://digital.world-grain.com/sosland/wg/2006_01_01
http://digital.world-grain.com/sosland/wg/2005_12_01
http://digital.world-grain.com/sosland/wg/2005_11_01
http://digital.world-grain.com/sosland/wg/2005_10_01
http://digital.world-grain.com/sosland/wg/2005_09_01
http://digital.world-grain.com/sosland/wg/2005_08_01
http://digital.world-grain.com/sosland/wg/2005_07_01
http://digital.world-grain.com/sosland/wg/2005_06_01
http://digital.world-grain.com/sosland/wg/2005_05_01
http://digital.world-grain.com/sosland/wg/2005_04_01
http://digital.world-grain.com/sosland/wg/2005_03_01
http://digital.world-grain.com/sosland/wg/2005_02_01
http://digital.world-grain.com/sosland/wg/2005_01_01
http://digital.world-grain.com/sosland/wg/2004_12_01
http://digital.world-grain.com/sosland/wg/2004_11_01
http://digital.world-grain.com/sosland/wg/2004_10_02
http://digital.world-grain.com/sosland/wg/2004_10_02
http://digital.world-grain.com/sosland/wg/2004_10_01
http://digital.world-grain.com/sosland/wg/2004_09_01
http://digital.world-grain.com/sosland/wg/2004_08_01
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