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

 

 

Option

Function

 

 

 

Stored programs are pre-programmed methods that make use of HACH reagents and LANGE

Stored Programs (HACH

cuvette tests and pipette tests.

LANGE Programs)

The DR 5000 Procedures Manual contains illustrated, step-by-step procedures for analyses

 

using HACH programs. The working procedures for LANGE tests are included in the test packs.

 

 

 

User programs make "made to measure analysis" possible:

User Programs

–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 measurements are:

 

Absorbance measurements: The light absorbed by the sample is measured in absorbance

 

units.

Single Wavelength

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.

 

In the multi-wavelength mode, absorbance (Abs) or percentage transmittance (%T) is measured

Multi Wavelength

at up to four wavelengths and absorbance differences and absorbance relationships are

 

calculated. Simple conversions into concentrations can also be carried out.

 

 

 

A wavelength scan shows how the light from a sample is absorbed over a defined wavelength

Wavelength Scan

spectrum.This function can be used to determine the wavelength at which the maximum

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 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 recalled, filtered, sent and deleted.

 

 

Instrument Setup

In this mode, user-specific or method-specific settings can be entered: Operator-ID, Sample-ID,

Date & Time, Display & Sound, Lamp Control, PC & Printer, Password, and Module Options.

 

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Hach DR 5000 user manual Standard Operations Main Menu, Main Menu options