HACH LANGE DR 3900, User Manual, Page: 43 / 163

English 43
English
Specifications
These are subject to change without notice.
Product Overview
The LINK2SC software function enables optimum interaction of the
process measuring equipment and the photometer in the laboratory. It
enables direct measurement correction of the online sc probe via a
photometer operating under laboratory conditions (refer to
section
Introduction to matrix correction ). LINK2SC also enables laboratory
control measurement. Measurement data is transferred from the
sc probe to the photometer, where it is then archived together with the
photometric reference data.
One or more online measurement values are used to create a
job on the
sc controller; this job is transferred to the photometer via a local network
connection or via SD memory card and USB adapter. A job is an XML
file containing measurement values and additional controller and probe
information.
The water probe drawn at the same time as this is analyzed in the
laboratory in line with the same parameters.
In the photometer, the photometric measured value is assigned to the
probe value in the
job . If the job is then sent back to the sc controller,
the probe is corrected automatically.
Data transfer is either via SD memory card or local network (LAN)
1
.
Figure 1 Communication between the process measurement
equipment and the photometer in the laboratory
Introduction to matrix correction
There are various options available for sc probes to correct the probe
value by means of laboratory values (as a reference value).
This example uses the AN-ISE sc probe, for which the sample
laboratory value can be entered as either nitrate nitrogen (NO
3
-N) or
ammonium nitrogen (NH
4
-N). This laboratory value corrects the value
measured by the probe. For precise information, please refer to the
calibration/matrix correction chapter of the AN-ISE sc user manual.
LINK2SC supports matrix correction 1 and 2 and makes an independent
decision as to which of the two correction types is to be used for the
application. The comparison measurements should be taken on different
days and at different times in order to record a maximum number of
changes in concentration. The following table describes the two
correction types in more detail.
Product Software version
sc1000 controller V 1.3
sc200 controller V 1.0
DR 3900 V 1.0
AN-ISE sc V 1.03
1. Only valid for sc1000 controllers.
1 Water probe drawn at the same
time
4 sc controller
2 Photometer and barcode test 5 sc probe
3 Data transfer: SD memory card
or LAN
1
6 Process basin