Kett FD-720, Руководство по эксплуатации

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9. Specifying Measuring Conditions
When using this tester to measure moisture or solid content, it is necessary to first specify the conditions
(e.g., drying temperature or measuring mode) to be used in performing the measurement. The settings
which may be specified are as described below.
When necessary, it is also possible to save sets of measuring conditions (i.e., drying temperature, measur-
ing mode, and bias).
9-1 Types of Settings
Description
Used to select the area to which measuring conditions are to be stored. There are 10 storage areas labeled
from 0 to 9. (See p. 24, “9-2-1 Selecting the CONDITIONS (Measuring conditions storage area)”.)
In automatic halting mode, measuring is brought to a halt whenever the change in moisture content over two
consecutive 30-second periods falls below the specified conditions for automatic halting. (For further
information, see 9-2-2 “1) Specifying settings for AUTO (Automatic halting) mode” on p. 25.)
Causes measuring to be completed when the specified amount of time has elapsed. (For further information,
see 9-2-2 “2) Specifying settings for TIME (Timed halting) mode” on p. 26.)
Causes the sample material to be rapidly dried until the amount of change in moisture content over a period of
30 seconds falls below the specified quantity and for drying to then be continued at the specified drying
temperature. (For further information, see 9-2-2 “3) Specifying settings for RAPID (High-speed drying) mode”
on p. 27.)
In low-speed drying mode, the temperature is raised more gradually than when performing measurements
under normal conditions, with it taking about 5 minutes from the time when measuring begins until the
temperature reaches the specified drying temperature.
(For further information, see 9-2-2 “4) Specifying
settings for SLOW (Low-speed drying) mode” on p. 29.)
In stepped drying mode it is possible to specify a separate drying temperature and separate measuring time
over up to 5 step intervals. (For further information, see 9-2-2 “5) Specifying settings for STEP (Stepped
drying) mode” on p. 30.)
Comparative measuring mode is used to measure the bias (i.e., the difference between the measurement
corresponding to that obtained in automatic halting mode and the predicted measurement value) needed in
order to perform measurements in predictive measuring mode. (For further information, see 9-2-2 “6)
Specifying settings for COMPARE (Comparative measuring) mode” on p. 32.)
In predictive measuring mode, the intermediate results of drying are used to predict future changes and to
calculate the predicted measurement and thereby shorten the amount of time used in measurement. (For
further information, see 9-2-2 “7) Specifying settings for PREDICT (Predictive measuring) mode” on p. 33.)
This parameter may be used to specify the drying temperature. The temperature may be set anywhere within
a range of from 30°C to 180°C in 1-degree increments. (For further information, see “9-2-3 TEMP (Drying
temperature)” on p. 34.)
This parameter is used to specify a numeric value to be used to correct measurements for bias. A bias
anywhere in the range of from –9.99% to 9.99% may be specified in 0.01% increments. (For further
information, see “9-2-4 Bias” on p. 35.)
Display during
specification of setting
CONDITION 0~9
(Measuring conditions
storage areas 0~9)
AUT
(AUTO: Automatic halting
mode)
TIM
(TIME: Timed halting
mode)
RPD
(RAPID: High-speed drying
mode)
SLW
(SLOW: Low-speed drying
mode)
STP
(STEP: Stepped drying
mode)
CMP
(COMPARE: Comparative
measuring mode)
PRD
(PREDICT: Predictive
measuring mode)
○○○
○ . ○○
Setting
CONDITION
MODE
(Measuring
mode)
TEMP
(Drying
temperature)
BIAS
(Bias value)
9-2 Descriptions of Individual Measuring Condition Settings
For a detailed description of individual measuring condition settings, see the instructions on how to specify
the settings for each item in subsection 9-2-1 and subsequent subsections.
1
To start specifying measuring condition settings:
Press the
key at a time when the display shows a weight reading.
2
If any password other than the default password of ‘0000’ has been specified, then a ‘PASS’ message will be displayed in
the weight display area. When this message is displayed, follow the instructions provided on p. 46, “10-2-7 Specifying a
password”, to enter a password. If the password entered is incorrect, the display will return to the weight display.
3
Selecting individual measuring conditions:
First a ‘CONDITIONS’ message will flash on the display. Pressing the
key at this time causes the flashing item to
change in sequence from MODE to TEMP to BIAS to CONDITIONS and back to MODE and so on each time the key is
pressed. When the item for which you wish to specify settings is flashing, press the
key. At this point it will be
possible to specify the settings for the flashing item.
4
To finish specifying measuring condition settings:
Pressing the
key at a time when any settings item is flashing causes the settings specified to take effect and cause
the display to return to the normal weight display.