Xylem CG 843 - Manual (Page 34)

Operation
102
Note
You can also prematurely terminate the three-point calibra-
tion by pressing . The values of the two-point calibra-
tion for slope and asymmetry are then retained.
11 Press the 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 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 key.
The value of the asymmetry appears on the display
(mV).
17 To return to the measuring mode: Press the
key.
Three-point
calibration