pH 298, LF 298, Oxi 298, Cl 298
Operation
37
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07/2018
4.7.6 Calibrating a chlorine sensor
Calibration of the measuring transmitter Cl 298 (to measure free or total chlo-
rine) in conjunction with the relevant measuring cells is done with single-point
calibration in comparison with photometrically determined laboratory data.
Chlorine measuring cells have automatic temperature compensation integrated
in the measuring cells. No fixed temperature is used for the calibration (fixed
temperature, see section 4.6 T
EMPERATURE
COMPENSATION
).
4.8
Measured value recording (data logger)
The measuring transmitter has an integrated data logger with real time clock for
4000 datasets (date, time, main measured value, secondary measured value,
temperature). The data logger automatically saves measured values according
to the specified save interval.
The save interval is defined the submenu
configuration
/
data logg.
Defining the save
interval
Please note the special instructions on calibration in the operating
manual of your sensor in addition to the calibration procedure on the
instrument.
Menu item
Explanation
input
Input field for calibration values (slope)
temp. offs.
Input field for offsetting the temperature value
(positive or negative)
one point
Starts the procedure for the single-point calibration
with manual input of the standard solution,
Any standard solutions are allowed.
back
Return to the measured value display.
1
Open the
configuration
menu with
<CONF>
.
2
Using
<
>
, highlight the
data logg.
menu item and confirm with
<ENTER>
.
3
Select the setting
interval
.
4
Enter the save interval in the input field
interval
.
5
Quit the menu
configuration
.
Summary of Contents for CL 298
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