Advanced Instruments 3900, Руководство пользователя

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Model 3900 buzz point defaults to 3000 for the lower range and
4800 for the upper range. Because the test results may be affected
somewhat by the amount of super cooling, these default buzz points
are recom mended for general use and for the most reliable compari-
son of data.
Certain fluids may not freeze reliably at the default buzz point, how-
ever, or may give more repeatable results with either more or less
supercooling than the default buzz point provides. The Model 3900
is designed to accommodate these, as well as the more ordinary
types of samples.
At “
Select “Buzz” Point ”, press START to dis play the current crys-
tallization setting, displayed as “ Buzz” Point = xxxx ”. To change
the crystal lization point:
a. At “
Buzz” Point = xxxx ”, the present setting must be cleared
before the buzz point can be changed. Press CLEAR to clear the
setting.
b. Enter the desired buzz point (including zeros), via the numeric
keypad, one digit at a time from left to right. Entries can be
erased one digit at a time from the rightmost using the < button.
The Model 3900 buzz points can be set between 2000 and 5400
on the mOsm scale.
Press ENTER to store the new setting (or STOP to restore the origi-
nal setting).
Note Each time the buzz point is changed, the instrument displays
the message “ Check Calibration ”, a reminder that the
instru ment calibration is affected by the amount of super-
cooling.
14. Select Language
Due to memory limitations, only one language may be installed.
Contact your dealer or Advanced Instruments for availability of
additional languages.
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Instrument Operation