Xylem MULTI 3400i pH/Oxi MULTI-PARAMETER METERS - Manual (Page 38)

Operation pH/ 3400i
38
Sample printout:
Probe evaluation 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.
Starting the calibration Proceed as follows to calibrate the instrument:
Note
The sponge in the air calibration vessel must be moist (not wet). Follow
the instructions in the OxiCal
®
-SL operating manual.
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: 0,88
Probe: +++
Display Relative slope
S = 0.8 ... 1.25
S = 0.7 ... 0.8
S = 0.6 ... 0.7
E3
Eliminate the error according to
chapter 6 W
HAT TO DO IF ...
S < 0.6 or S > 1.25
1 Perform the preparatory activities according to section 4.4.1.
2 Keep the OxiCal
®
-SL air calibration vessel ready.