Matx2 Correction (2Nd Point Matrix Correction) - Hach NO3D sc User Manual

READING STABLE?
NO3–N:
DRIFT
CL-
DRIFT

4.6.3.3 MATX2 correction (2nd point matrix correction)

CALIBRATE
CAL. CONFIG.
CONC MEAS 1
DATE
SET NO3–N CONC
CONC MEAS 2
DATE
SET NO3–N CONC
READING STABLE?
NO3–N:
DRIFT
CL-
DRIFT
The currently measured nitrate and chloride values are displayed.
The drift indicates whether the measured value is stable.
4. Wait until the measured value is stable and confirm by pressing
(Drift should be < 0.03 mg/L). The values for nitrate and
ENTER
chloride are saved.
5. Immediately after saving, take a water sample for laboratory
analysis from as close to the sensor as possible.
6. Analyze the sample immediately after taking the sample as its
nitrate content can change quickly.
After determining the laboratory reference values for chloride and
nitrate, proceed as follows:
7. Select
SENSOR SETUP>NO3D SC>CALIBRATE>
.
SET NO3–N CONC
8. Enter the laboratory reference value for NO
to confirm.
ENTER
9. Select
SENSOR SETUP>NO3D SC>CALIBRATE>
.
SET CL- CONC
10. Enter the laboratory reference value for chloride and press
to confirm.
ENTER
Confirmation of the entered laboratory value activates the
matrix correction.
Proceed as follows to perform the MATX2:
1. Select
SENSOR SETUP>NO3D SC>CALIBRATE>CAL CONFIG
2. Select in the selection window and press
MATX2
3. Select
CONC MEAS 1
The currently measured nitrate and chloride values are displayed.
The drift indicates whether the measured value is stable.
4. Wait until the measured value is stable (Drift should be
< 0.03 mg/L) and press
is saved.
5. Immediately after measuring, take a water sample for
laboratory analysis from as close to the sensor as possible.
6. Analyze the sample immediately after taking the sample as its
nitrate content can change quickly.
–N and press
3
.
to confirm. The value for nitrate
ENTER
Operation
.
.
ENTER
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