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8.1.5 Tare Options
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TEST PROGRAMS
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to edit a program
TARE OPTIONS
The following options are available:
•
PAN TARE
records the empty pan weight after ensuring that its weight is sufficiently
stable over a programmable period of time. Pan Tare continues until the weight is
found stable (≤ 0.2mg deviation) over the programmable period of time. Temperature
fluctuations occur in the test chamber, dependent on a number of different criteria
such as previous test temperature, the amount of cool down time between tests, and
the current idle temperature. The temperature fluctuations cause the balance
readings to drift and are reflected as an error in the result. Because the conditions that
cause the temperature fluctuations are not always constant, the error often appears
as a higher standard deviation on higher moisture samples. Obtaining an accurate
Pan Tare is crucial for low moisture samples.
If the lid has been closed prior to starting the test and the balance is near zero (-0.1 to
0.1g), then Pan Tare usually occurs instantly unless something has recently upset the
balance readings.
The following options are available:
o
Standard is good for most materials.
o
Extended may improve results for low moisture materials.
