Hach Portable Spectrophotometer DR 2800 - Manual (Page 26)

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Standard Operations
5.1.3 Main Menu
A variety of modes may be selected from the ”Main Menu“. The
following table briefly describes each menu option.
Table 2 ”Main Menu“ Options DR 2800
Option Function
Stored Programs /
Barcode Programs
(HACH LANGE
Programs) Stored programs are pre-programmed methods that make use of HACH reagents and LANGE
cuvette tests and pipette tests.
The DR 2800 Procedures Manual contains illustrated, step-by-step procedures for analyzes
using HACH programs. The working procedures for LANGE tests are included in the test packs.
User Programs
User programs make "made to measure analysis" possible:
- Users can program methods they have developed themselves
- Existing HACH and LANGE methods can be stored as user programs. The LANGE tests can
then be modified to suit the user's requirements.
Favorite Programs List of methods/tests created by the user to suit his own requirements.
Single Wavelength
Single wavelength measurements are:
Absorbance measurements: The light absorbed by the sample is measured in absorbance
units.
Transmittance measurements (%): The percentage of the light that passes through the sample
and reaches the detector is measured.
Concentration measurements: 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.
Time Course The time scan records the absorbance or % transmittance at a wavelength over a defined time.
System Checks
The system checks menu offers a number of options, including optical checks, output checks,
lamp history, instrument update, service time and instrument backup.
Recall Data Stored data can be called up, filtered, transmitted and deleted.
Instrument Setup
In this mode, user-specific or method-specific settings can be entered: Operator-ID, Sample-ID,
Date & Time, Display & Sound, Power Management, PC & Printer and Password.