User manual

H60.0.71.6C-04 Manual Appendix GMH 38-LW1 / -LW2 page 6 of 8
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10.2 Bucket test
The probes from suitable places in Your material into a bucket ( (>=10 litre).
Compress: Step into the bucket and compress with roughly 10 kg. Measure under Your foot:
During measuring keep pressure on the handle!
Repeat Your measuring and take average of 3 measurings!
At values above 20%u the display may have falling values: The display after 10 seconds is valid!
10.3 Additional Information about Moisture Measuring
10.3.1 Moisture gradients
Please keep in mind: Depending on Storage conditions and harvesting there can be large differences of
moisture within bales or grain stocks!.
10.3.2 Measuring Precision
The 38-LW Set is perfect for approximate measuring of material moisture in Wood Chips, Hay, Straw and
Grain. Depending on the sort and condition of the measured good there may appear deviations.
The main advantage of the system lies within the ability of comfortable measuring of many measuring spots
(bottom, top, weather side...) within one stock in short time - without separate sampling.
This is in praxis very often much more valuable as single measurements with higher precision!
Precision of wood chip measuring
With the “bucket test” and good quality soft wood chips following precision can be achieved (curve setting
h.461 GMH 3830/-3850/-3851 as of version 1.9):
8-20% u: better than ±20% of measured value
25-40% u: better than ±4%u ±40% of (measured value-20%u)
At values out of the range of 8…40% the display value is increasingly unprecise and should only be used as
an indicator.
Significant here is: >25% is definitively to wet!
 In practice, the precision in this area is no longer decisive.
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possible display deviation[%u]
moisture display [%u]