Hanna-instruments HI 903 Manual do Utilizador Página 23

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INTRODUCTION
1 INTRODUCTION
The HI 903 is an automatic volumetric Karl Fischer titrator with high accuracy, great flexibility
and repeatability.
The titrator is designed to perform titrations for a variety of sample types.
The main attributes of this titrator are:
Flexibility Support up to 100 titration methods (standard and user defined).
User defined titrant and standard database.
High accuracy Precise dosing system, capable of delivering as little as 0.125 µL of titrant with a single
dose.
Precise mV measurement and current (µA) control.
Repeatability Powerful built-in algorithms for termination criteria based on fixed mV endpoint or
absolute/relative drift.
Quick results Pre-defined titration methods.
Pre-dispensing feature.
Dynamic dosing feature.
Balance interface for automatic weighing.
Complete report Results are displayed directly in the selected units along with the titration information.
Titration graph can be displayed on the LCD and saved as a bitmap.
Customizable titration reports and drift analysis reports can be printed, saved on a USB
storage device or transferred to a PC via the USB interface.
Result history Titrant standardization and sample analysis results averaging.
GLP features Titrant age reminder.
Fields for specific annotations.
Conditioning phase Automatic pre-titration for drying the solvent and titration beaker.
Drift analysis adjusted titration results for improved accuracy.
Sealed solvent Allows full operation in a completely sealed system, minimizing water vapor entry.
system
Self diagnosis and Integrated help screens are available.
integrated help Self diagnosis features for peripheral devices including pump, valve, burette and stirrer.
Error management with warning and error messages.
Large graphical display 5.7” (320 x 240 pixels) graphical color display with backlight.
Easy to view text and graphs.
User friendly interface.
This manual provides information regarding installation and functionality of the titrator and
refined operation suggestions.
Before using the titrator it is recommended you become familiar with its various features and
functionality.
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