Operation
XD 7500
76
ba77191e01 - 71310060
04/2018
4.7
Special / Multi wavelengths methods
4.7.1
Basic information on Special / Multi wavelengths measure-
ments
In the Special / Multi wavelengths
mode of the XD 7500, you can carry out
measurements with special methods and functions.
You can use the following functions for these methods:
Measurements at different wavelengths
Multiple measurements at one wavelength (e.g. before and after adding a
reagent)
Use of procedure variables.
Procedure variables provide a value that has to be entered prior to each
measurement on the photometer (e.g. volume, pH value or temperature)
Check whether a value meets a condition.
With a condition you can check a value for validity (e.g. absorbance value,
procedure variable or the result of a formula).
Formula editor for the convenient programming of any user-defined meth-
ods
Special methods
The method list in the Special / Multi wavelengths mode comprises:
preprogrammed multi wavelengths methods
preprogrammed special methods
special methods programmed by the user
4.7.2
Programming / modifying the Special / Multi wavelengths meth-
ods
The creation of a user-defined method is done in the following steps:
If you program any special methods yourself, you can use all
extended functions of the Special / Multi wavelengths mode.
For multi wavelength methods, you can use the method numbers
2001 to 2499. All special methods can also be selected in the
method list of the concentration mode.
