wtw pH/Oxi 340i Operating Manual page 38

Operation
Probe evaluation
Starting the calibration
38
Sample printout:
CALIBRATION PROTOCOL
02.03.01 14:19
Device No.: 12345678
CALIBRATION 02
Cal time: 02.03.01 / 14:19
Cal interval: 14d
OxiCal Tauto AR
Relative Slope:
Probe: +++
After the calibration, the measuring instrument evaluates the current
status of the probe against the relative slope. The evaluation appears
on the display. The relative slope has no effect on the measuring accu-
racy. Low values indicate that the electrolytic filling will soon be deplet-
ed and the probe has to be regenerated.
Display
E3
Eliminate the error according to
chapter 6 W
HAT TO DO IF
Proceed as follows to calibrate the instrument:
1 Perform the preparatory activities according to section 4.4.1.
2 Keep the OxiCal
Note
The sponge in the air calibration vessel must be moist (not wet). Follow
the instructions in the OxiCal
0,88
Relative slope
S = 0.8 ... 1.25
S = 0.7 ... 0.8
S = 0.6 ... 0.7
S < 0.6 or S > 1.25
...
®
-SL air calibration vessel ready.
®
-SL operating manual.
pH/Oxi 340i