wtw pH 3110 Operating Manual page 20

Operation
Calibration record
Displaying the
calibration data
Calibration evaluation
Preparatory activities
20
When finishing a calibration, the new calibration values are first
displayed as an informative message and stored.
You can display the data of the last calibration (see section 4.4).
After calibrating, the meter automatically evaluates the calibration. The
zero point and slope are evaluated separately. The worse evaluation of
both is taken into account. The evaluation appears on the display as
the sensor symbol and in the calibration record.
Sensor symbol
Clean the combination electrode
according to the electrode operating
manual
CalError
Eliminate the error according to
chapter 6 W
HAT TO DO IF
1 Switch on the meter with <On/Off>.
2 Connect the pH combination electrode to the meter.
3 Keep the buffer solutions ready.
4 Adjust the temperature of the solutions and measure the
current temperature if the measurement is made without
temperature sensor.
Zero point
[mV]
-15 ... +15
-20 ... +20
-25 ... +25
-30 ... +30
< -30 or
> 30
...
pH 3110
Slope
[mV/pH]
-60.5 ... -58
-58 ... -57
-61 ... -60.5
or
-57 ... -56
-62 ... -61
or
-56 ... -50
... -62 or
... -50
ba75791e02 11/2008