Measurement Settings - Mettler Toledo SevenCompact S220 Instrucciones De Manejo

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Segmented: the calibration curve is made up of linear segments joining the individual cal i b ra-
tion points. If high accuracy is required, the segment method is recommended.
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Linear: the calibration curve is determined using linear regression. This method is rec o m-
mend e d for samples with widely varying values.
These settings applies to both pH and Ion calibration.
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.
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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.
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Immediately
The meter is immediately blocked for measurement when the predefined interval has elapsed.
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Reminder + 1h
The meter is blocked for measurement 1 hour after the predefined interval has elapsed.
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Reminder + 2h
The meter is blocked for measurement 2 hours after the predefined interval has elapsed.
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Continue Reading
The user can continue measuring when the predefined interval has elapsed.
6.4 M easurement settings
Measurement Resolution
The resolution for pH and mV needs to be set for the display. Up to 3 decimal places can be cho-
sen depending on the unit of measurement (see table below).
On display
X.XXX
X.XX
X.X
X
In the ion mode, the measurement resolution depends on the concentration and the unit of the
mea s ured ion.
Stability Criterion
The Stability icon appears according to the following stability criteria:
- Stability criteria for pH and mV measurement
Strict
The measured signal should not change by more than 0.03 mV in 8 seconds or by more than
0.1 mV in 30 seconds.
Medium
30 Menus and settings
Description
three decimal places
two decimal places
one decimal place
no decimal places
Option
pH
pH
pH, mV
mV