wtw CL 298, Operating Manual

Page: 32 / 76

Operation
pH 298, LF 298, Oxi 298, Cl 298
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For this the temperature of the measurement and calibration media has to be
measured or stored as a fixed temperature. If the fixed temperature is enabled
it is used for temperature compensation. The Fix message appears in the upper
right-hand corner of the display.
Setting the fixed
temperature
4.7 Calibrating (CAL menu)
4.7.1 General proceeding
General
proceeding
1 Open the configuration menu with <CONF> .
2 Using <     > , highlight the temperature menu item and confirm
with <ENTER> .
Submenu Selection/Val-
ues Explanation
fixed temp. on
off Enabling / disabling the fixed tempera-
ture
temp. Value Input field for the fixed temperature value
3 Select the setting fixed temp.
/
on
.
4 Set the temp. Value in the input field.
5 Quit the menu configuration
.
The sensor is protected by a password against unauthorized cali-
bration. For more information on password protection, refer to
section 4.11.
1 Switch to the measured value display as necessary.
2 Open the calibration menu with <CAL> .
The password
input field pops up.
3 Enter the password.
The
calibration menu is open.
The calibration menu lists the calibration procedures suitable for the
instrument type.
Details on calibration for your type of instrument are given in the fol-
lowing sections (see section 4.7.3 ... section 4.7.6).