Jay-Lor 5425TM, Owner'S Manual

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DAS 96-20 Evaluating forages and TMRs using the Penn State Particle Size Separator 5
PARTICLE SIZE SEPARATOR INSTRUCTIONS
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CONTINUED
)
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Table 2. Example on computing the total weight and percentages under each siev
e.
Record data
Sample
Corn silage
Upper sieve 20 grams [a]
Middle sieve 75 grams [b]
Bottom pan 155 grams [c]
Compute total weight and
percentages or Proportion remaining on each pan
Total
250 grams [d = a+ b+ c]
upper sieve 8%
% under upper sieve 92% [e = 100 x (b + c)/d] middle sieve 30%
% under middle sieve
62% [f = (100 x c/d)]
bottom pan 62%
1
The percentages are cumulative percent undersized. For example, on average, 92% of feed is smaller
than 0.75 inches and 62% of feed is smaller than 0.31 inches.
Figure 2. Weibull paper