Delmhorst Instrument F-2000 - Manual (Page 11)

9
Hay Temperature
The F-2000 has been calibrated at 80°F on various samples
of different types of hay, mostly alfalfa, and on different
cuttings and mixtures. The higher the temperature of the
sample, the higher the meter readings will be. Temperatures
lower than 80°F cause lower meter readings. The correction
is approximately 1% for every 20° difference. Refer to
chart below:
Hay temperature Add to reading Subtract from reading
20°F/-7°C 3 --
40°F/ 5°C 2 --
60°F/15°C 1 --
80°F/30°C 0 0
100°F/40°C -- 1
120°F/50°C -- 2
140°F/60°C -- 3
Example
Meter reading: 22%
Temperature: 40°F/5°C
Moisture Content: 24% (22 + 2)
Curing
Before proper curing has taken place, wide variations in
moisture content should be expected in both recently baled
hay and hay in the windrow. These variations will be exposed
by meter readings taken on different parts of the windrow or
bale.
The higher the moisture range, the wider the
variations. The more curing has been allowed to take place,
the greater uniformity in moisture distribution can be
expected.
The validity of the meter readings is closely related to the
care spent in sampling the hay to be tested. Whether hay in
the windrow or baled hay is tested, the number of tests made
should be increased whenever the initial readings show
considerable variations.
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