Xylem CG 843 - Manual (Page 30)

Operation
98
6 If necessary, set the temperature of the second buffer
solution by pressing < ▲ > < ▼ >.
7 Submerse the electrode in the second buffer solution .
8 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 two-point calibration.
The value of the slope (mV/pH) appears on the dis-
play.
9 Press the <run/enter> key.
The value of the asymmetry (mV) appears on the dis-
play.
10 To return to the measuring mode: Press the <pH>
key or continue with three-point calibration.