HACH LANGE DR 3900, User Manual

Page: 44 / 163

English 44
Installation
LAN
1
Configure the photometer IP address on the sc1000 controller. Also
observe the instructions in the user manuals for the photometer and the
sc controller.
SD memory card
The sc controller has an SD memory card slot.
The SD memory card is used to:
• Save log files from all instruments
• Update the sc controller software
• Restore settings without network access
• Perform the LINK2SC process
The SD memory card must be inserted in a USB adapter in order to
connect to the photometer.
Operation
Work sequence: CREATE JOB
1. Create the job file on the sc controller (refer to section Work
sequence: sc controller )
a. Select LINK2SC from the sc controller menu.
b. Select CREATE JOB from the LINK2SC menu.
c. Select the SENSOR NAME from the create job menu.
d. Select the PARAMETER of the job file from the sensor menu.
e. As soon as the parameter has been selected, take a
comparison sample for the laboratory measurement.
Table 1 AN-ISE sc correction types
(extract from user manual)
LINK2SC Correction Application
CREATE
JOB
MATRIX1
MATRIX1 is the most commonly used correction
type and is the recommended first step. MATRIX1
performs a single-point matrix correction for
ammonium and/or nitrate; this is done either with
or without compensation electrode correction
(potassium and/or chloride), though "without" is
sufficient in most cases. Compensation electrode
correction is only necessary if a higher level of
accuracy is required. With a MATRIX1, a sample
must be taken when the correction is triggered and
analyzed in the laboratory. MATRIX 1 is activated
when the laboratory value is entered.
NEW
MEASURE
MENT
MATRIX2
MATRIX2 correction is recommended for dynamic
processes with a large fluctuation of nitrate/
ammonium over at least half a decade
1
. With a
MATRIX2, a sample must be taken for both points
(a high and a low concentration) when the
correction is triggered and analyzed in the
laboratory. MATRIX2 is activated when the
laboratory value is entered.
1 Examples of half a decade: The concentrations of nitrate nitrogen shift between 1 and 5 mg/L
NO
3
-N and between 5 and 25 mg/L NO
3
-N. (Conc2 = (Conc1 × 10)/2)
1. Only valid for sc1000 controllers.