DEPOLOX® 400 M
6. Operation
69
EN
12 Remove the ORP sensor from the top clip.
13 Screw the ORP sensor into the cell body
cover.
14 Open the sample water inlet and outlet
again.
This concludes the ORP (Redox) calibration.
6.6.5 Fluoride calibration
1 Press the symbol.
2 Press the
Calibration menu.
3 Tap the measured value “Fluoride.”
4 Tap “+” for calibration with calibration
solutions, and the display for the exten-
ded calibration menu opens. In the case
of single-point calibration, continue under
“Offset compensation.”
5 Tap the “Calibrate lower value” parame-
ter.
6 Place the beaker in the bottom clip and fill
it with calibration solution 0.20 mg/l.
7 Close the sample water inlet and sample
water outlet and briefly open the flow cell
drain valve to release the pressure. Close
the flow cell drain valve again.
8 Remove the fluoride sensor from the cell
body cover.
9 Dip the fluoride sensor at least 1“ (2 cm)
into the calibration solution through the
top clip and move it slightly until the indi-
cated value remains constant.
10 Press the “Calibration” button. An input
field opens.
11 Use the input field to enter the value to
be calibrated for the calibration solution.
12 Press "Enter" to save the entry.
13 Remove the calibration solution from the
bottom clip.
14 Wash the sensor in distilled water to pre-
vent carryover of calibration solution.
15 Tap the “Calibrate upper value” parame-
ter.
16 Place the beaker in the bottom clip and fill
it with calibration solution 2.00 mg/l.
17 Dip the fluoride sensor at least 1“ (2 cm)
deep into the calibration solution and
move gently until the indicated value
remains constant.
18 Press the “Calibration” button. An input
field opens.
19 Use the keypad to enter the value to be
calibrated.
20 Press "Enter" to save the entry.
21 Remove the fluoride sensor from the top
clip.
22 Insert the fluoride sensor into the cell
body cover.
23 Open the sample water inlet again.
The fluoride measurement has now been cali-
brated.
Offset alignment
If there is a constant difference between the
displayed fluoride value and a fluoride value
measured manually, this difference can be
compensated for and the comparative value
entered in the Offset menu.
1 Press the symbol.
2 Press the
Calibration menu.
3 Tap the measured value “Fluoride.”
4 Press the “Offset” parameter.
5 Use the keypad to enter the value from
the comparative measurement.
6 Press "Enter" to save the entry.
This concludes the fluoride calibration.
6.6.6 Temperature calibration multi-
sensor
1 Press the symbol.
2 Press the
Calibration menu.
3 Tap the measurement “Temperature.”
4 Press the “Cal. value” parameter.
5 Perform comparative temperature mea-
surement.
6 Use the keypad to enter the value to be
calibrated.
7 Press "Enter" to save the entry.
This concludes the temperature calibration.
NOTICE
•
During fluoride calibration, the calibrat-
ion solution and the sample water must
have the same temperature. If there is a
temperature difference of > 9 °F (> 5 °C),
first bring the calibration solution to the
same temperature as the sample water.
•
The first time you use the fluoride sen-
sor, place the fluoride sensor into a 100
mg/l calibration solution overnight and
then into the sample water. After one
hour the fluoride sensor has stabilized
and the first calibration can be started.
NOTICE
The offset calibration is deleted each time a
new fluoride alignment with calibration
solution is performed
