Xylem CG 843 - Manual (Page 34)

Operation
102
Note
You can also prematurely terminate the three-point calibra-
tion by pressing <pH>. The values of the two-point calibra-
tion for slope and asymmetry are then retained.
11 Press the <run/enter> key.
Cd3 appears on the display.
12 Thoroughly rinse the electrode with distilled water.
13 If necessary, set the temperature of the third buffer
solution by pressing < ▲ > < ▼ >.
14 Submerse the electrode in the third buffer solution.
15 Press the <run/enter> key.
AR flashes on the display.
The electrode voltage (mV) appears on the display.
As soon as a stable value is recognized,
AR disap-
pears.
The sensor symbol shows the electrode evaluation
after the three-point calibration.
The value of the slope (mV/pH) appears on the dis-
play.
16 Press the <run/enter> key.
The value of the asymmetry appears on the display
(mV).
17 To return to the measuring mode: Press the <pH>
key.
Three-point
calibration