Hach DR 3900, Основное руководство пользователя

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English 14
Main menu
A variety of modes may be selected from the Main Menu. The following
table briefly describes each menu option.
There is a toolbar on the right-hand side of the screen. Press to activate
the various functions.
Table 2 Main Menu options
Option Function
Stored
Programs /
Barcode
Programs
Stored programs are pre-programmed methods that make
use of HACH chemicals and vial tests.
Further information, as well as illustrated, step-by-step pro-
cess instructions for analyses using HACH programs, are
available on the website of the manufacturer.
User Programs
User programs make "made to measure analysis" possible:
• Users can program methods they have
developed themselves
• Existing HACH methods can be stored as user
programs.
Favorites
List of methods/tests created by the user to suit his own
requirements.
Single
Wavelength
Single wavelength readings are:
Absorbance readings: The light absorbed by the sample is
measured in absorbance units.
Transmittance reading (%) : Measures the percent of the
original light that passes through the sample and reaches the
detector.
Concentration readings: A concentration factor can be
entered to enable the measured absorbance values to be
converted into concentration values.
Multi
Wavelength
In the Multi Wavelength mode, absorbance (Abs) or
percentage transmittance (%T) is measured at up to four
wavelengths and absorbance differences and absorbance
relationships are calculated. Simple conversions into
concentrations can also be carried out.
Wavelength
Scan
A wavelength scan shows how the light from a sample is
absorbed over a defined wavelength spectrum. This function
can be used to determine the wavelength at which the maxi-
mum absorbance value can be measured. The absorbance
behavior is displayed graphically during the scan.
Time course
The time scan records the absorbance or % transmittance at
a wavelength over a defined time.
System checks
The "System check" menu offers a number of options,
including optical checks, output checks, lamp history,
instrument update, service time, settings for analytical
quality assurance and instrument backup.
Recall
measurement
data
Stored data can be called up, filtered, sent and deleted.
Instrument
Setup
In this mode, user-specific or method-specific settings can be
entered: operator ID, sample ID, date & time, sound, PC &
printer, password, energy-saving mode and stored data.
Table 2 Main Menu options
Option Function