Micromeritics AccuPyc 2 1340, Руководство оператора

Страница: 12 / 158

Equipment Description AccuPyc II 1340
1-4 Aug 2013
Equipment Description
The AccuPyc II 1340 Pycnometer is an easy-to-use, fully automatic gas displacement pycnometer.
Analyses are started with a few keystrokes and after that, data are collected, calculations performed,
and results displayed without further operator intervention. The pycnometer may be operated in five
different languages: English, French, German, Italian, or Spanish.
The AccuPyc II 1340 Pycnometer’s unique run precision feature increases the precision of analysis
results by reporting data from five consecutive runs that are within a user-specified tolerance. This
feature allows early termination of analyses, thereby decreasing the number of runs needed for
accurate results.
The AccuPyc II 1340 Pycnometer consists of a control module with a built-in keypad and display area,
and an analysis module. When ordering a single unit, the analysis module is built into the same unit as
the control module for convenience. You can also attach up to five additional analysis modules to one
control module (six total), enabling you to accommodate different sizes of samples. Each module has
its own gas connection. The pycnometer is controlled by commands entered through the keypad. USB
ports are provided on the rear panel of the controller allowing you to attach a printer for output of anal-
ysis and calibration results, and a keyboard for input of alphanumeric characters. The USB port is also
used for installing software updates.
The AccuPyc II 1340 Pycnometer determines density and volume by measuring the pressure change of
helium within calibrated volumes. The current pressure and chamber temperature are displayed alter-
nately on the pycnometer display.
Analysis enables you to measure sample volume, from which density can be derived automatically if
you have entered the sample mass. The unit comes preprogrammed with default conditions and ready
to perform analyses. It can be easily reprogrammed to meet your specific needs. You can modify your
own analyses by entering the number of purges and purge fill pressure, number of cycles and cycle fill
pressure, equilibration rate, and run precision. Modifying these parameters enable you to maintain con-
trol of the primary portions of the analysis;
purge and run .
A purge is used strictly for sample clean-up and for removing air and moisture from the inside of the
chamber. It is accomplished by closing off the pycnometer block and filling the cell chamber to the