Hach-Lange DR 3900 User Manual - Manual (Page 75)

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Expanded programs
6.1.1.1 Single wavelength settings
The following parameters can be defined when selecting the
single wavelength mode:
Units:
1. Select the required unit from the list
2. Press Continue.
Note: Units of measure not included in this list can be added in the edit
program under Program Options, Edit. Select Units, Edit and then
New.
Wavelength (single wavelength program type):
1. Enter measured wavelength.
The entered wavelength must be in the range from
320–1100 nm.
2. Press Continue.
Concentration resolution (number of decimal places)
1. Select the required number of decimal places to be
displayed after the decimal point from the displayed list.
2. Press Continue.
Table 8 Program descriptions
Program type Description
Single Wavelength Readings at a defined wavelength
Multi Wavelength
In the Multi Wavelength mode, absorbance values can be measured at up to four wavelengths
and the results can be mathematically processed to obtain sums, differences and relationships.
Free programming
A high degree of flexibility results in individual options to create a user program. The free
programming is an expanded form of test or method programming.