Hach NT3100sc Benutzerhandbuch Seite 13

• SC200 and SC1000 Controllers—Go to the main menu, then select Sensor setup. If
applicable, select the sensor.
• SC4500 Controller and Claros interface—Select the tile of the device, then select Device
menu.
2. Select Calibration. If applicable, select the parameter.
3. Select an option.
Option
Offset
Factor
Standard
calibration
Calibration
interval
5.3.2 Matrix calibration
The matrix calibration is for the NT3200sc probes only.
Note: Doing or erasing a matrix calibration does not effect the factory calibration.
1. Go to the main menu, then select Calibration > Matrix calibration > Start matrix calibration.
2. Collect a grab sample.
3. Measure the grab sample in the laboratory with the two parameters: NO
and NO .
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4. Select Calibration > Matrix calibration > Enter lab values.
Note: The Enter lab values option only shows when the Matrix calibration is started.
5. Enter the laboratory values.
6. Select Calibration > Matrix calibration > Information.
Information about the current matrix calibration shows.
7. Select Calibration > Matrix calibration > Calibration interval to set a reminder for the Matix
calibration.
If necessary, go back to the factory calibration. Select Calibration > Matrix calibration > Reset to
default.
5.4 Correction via Link2sc
The Link2sc procedure offers a secure method of data exchange between process probes and
Link2sc-compatible photometers using an SD memory card or via a local area network (LAN).
During a pure control measurement, the measurement data is transferred from the probe to the
photometer where it is then archived together with the photometric reference data that has been
recorded.
Refer to the Link2sc user manual for a detailed description of the Link2sc procedure.
Description
Enters a slope offset value to adjust the calibration without standards. Options: from -10%
to +10% of measurement range (default: 0)
Note: Use Offset to adjust the measurement values of the probe compared to laboratory
values when there are constant deviations of the measurement. The adjustment of Offset
lowers or raises the calibration curve of the probe.
Sets a factor to adjust the measurements to reference values. Options: from 0.8 to
1.2 (default: 1)
Note: Use grab samples with known values or standard solutions to determine the
calibration factor.
Start calibration—Starts a one point calibration.
Standard value—Selects the value for the calibration standard.
Sets the calibration interval. Options: off (default), 1 week, 4 weeks, 3 months or
6 months.
–N and NO –N or NO
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