Kett FD-720, Руководство по эксплуатации

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9-2-4 Bias
When necessary measurements should and can be corrected for bias. The bias may be specified
with a value of anywhere from -9.99 to 9.99% in 0.01% increments. A bias should be specified in
cases like those described below.
Many different conditions sometimes result in measured values (as measured using the FD-
720) failing to meet with expected (standard) values. When this happens, a bias may be set to
correlate the value as measured by the FD-720 and the expected (standard) value.
• In most cases it is possible to change the measuring conditions used to make the measurements
obtained using the FD-720 to match the expected (standard) values, but when such conditions
would cause the sample to be burned, would cause the time required for measurement to become
too long, or otherwise result in problems, a bias should be specified instead.
When using more than one unit, there may be times when it is impossible to obtain identical
measurements even when the same measuring conditions are used, because of differences in
the locations where the units are placed or because of differences in the surrounding environ-
ment. In such cases, the bias of the unit that is to serve as the standard should be set to zero
and the bias of the other units set to account for any such differences.
• For information on how to specify the bias when operating in predictive measurement mode, see
p. 52, “12-2-1 Calculating the bias to be specified when operating in predictive measurement
mode”.
Key(s) used Operating instructions
With the display displaying the weight in grams, press the
key.
If a password has been specified, the message ‘PASS’ will be
displayed to indicate that a password should be entered. Follow
the instructions in “10-2-7 Specifying a password” on p. 46 to
enter the password.
The ‘CONDITIONS’ display area will begin to flash. Press the
key until ‘BIAS’ begins to flash.
With the ‘BIAS’ indicator flashing, press the key. The
highlight will then shift to the bias specification, and the currently
specified bias value will begin to flash.
Press the key or key to select the desired bias. Note
that here a bias of 0.2% has been specified.
When the desired bias is displayed, press the key. The
display of the specified bias will change from a flashing to a
constantly lit display, and ‘BIAS’ will begin to flash instead.
If you wish to specify other measuring conditions settings, press
the
key to select the setting to be specified.
To exit from specifying measuring conditions settings, press the
key instead.
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How to set the bias
Display