Conductivity Calibration Settings - Mettler Toledo SevenCompact S230 Instrucciones De Manejo

6.3 C onductivity calibration settings
Calibration standard
- Predefined conductivity standard
The following conductivity standards are available:
International:
10 μS/cm
Chinese:
146.5 μS/cm
Japanese:
1330.00 μS/cm
- Customized conductivity standard
This option is for users who would like to use their own conductivity standard for calibration of the
con d uc t iv i t y sensor. Up to 5 temperature-dependent values (in mS/cm only) can be entered in the
table. Lowest possible special standard: 0.00005 mS/cm (0.05 μS/cm). This value corresponds
to the conductivity of pure water at 25°C, exclusively caused by the autoprotolysis of water.
When switching from a predefined standard to customized standard, you should always save the
table even if no values have changed.
- Cell constant
If the cell constant of the conductivity cell being used is accurately known, it can be entered direct-
ly in the meter.
1 Select Enter Cell Constant in the menu
2 Return to the measurement display
3 Press CAL in the measurement display
4 The user is prompted to enter the cell constant
Calibration reminder
When the calibration reminder is "On", the user is reminded to perform a new calibration after a
cer t ain user-defined interval (maximum 9999 h) has elapsed.
●
Press READ to save the interval and another screen appears to select calibration expiration
date.
Four different time spans can be programmed. In all four cases, a warning message appears that
the electrode should be calibrated.
●
Immediately
The meter is immediately blocked for measurement when the predefined interval has elapsed.
●
Reminder + 1h
The meter is blocked for measurement 1 hour after the predefined interval has elapsed.
●
Reminder + 2h
The meter is blocked for measurement 2 hours after the predefined interval has elapsed.
●
Continue Reading
The user can continue measuring when the predefined interval has elapsed.
28 Menus and settings
84 μS/cm 500 μS/cm
1408 μS/cm
133.00 μS/cm
1413 μS/cm 12.88 mS/cm saturated NaCl
12.85 mS/cm 111.35 mS/cm
26.6 μS/cm