wtw pH/Oxi 340i Operating Manual page 22

Operation
Calibration evaluation
22
Note
You can automatically print a calibration protocol after the calibration.
To do so, connect a printer to the interface according to section 4.7.2
before calibrating. After a valid calibration, the record is printed.
Sample printout:
CALIBRATION PROTOCOL
02.03.01 14:19
Device No.: 12345678
Calibration pH
Cal time: 01.03.01 / 15:20
Cal interval:
AutoCal TEC Tauto
Buffer 1 2.00
Buffer 2 4.01
Buffer 3 7.00 *
Buffer 4 10.00
C1 184.1 mV
C2 3.0 mV
S1 -59.4 mV/pH
ASY1 - 4 mV
Probe: +++
After the calibration, the measuring instrument automatically evaluates
the calibration. The asymmetry and slope are evaluated separately.
The worst evaluation appears on the display.
Display
Clean the electrode according to the
electrode operating manual
E3
Eliminate the error according to chap-
ter 6 W ...
HAT TO DO IF
7d
25.0°C
25.0°C
Asymmetry
[mV]
-15 ... +15
-20 ... +20
-25 ... +25
-30 ... +30
< -30 or
> 30
pH/Oxi 340i
Slope
[mV/pH]
-60.5 ... -58
-58 ... -57
-61 ... -60.5
or
-57 ... -56
-62 ... -61
or
-56 ... -50
... -62 or
... -50