Yokogawa EXA PH202 2-Wire pH/ORP Analyzer - Manual (Page 75)

IM 12B07D02-01E
6-2 Calibration
pH
pH
YES NO
YES NO
YES NO
pH
YES NO
pH
NO
pH
YES
Press YES for single point
(As Pot) adjustment.
Press NO to proceed to calibrate Slope.
The instruments waits for
the reading to stabilize.
(The pH display flashes)
When reading Is stable,
the CAL END message
appears.
Transfer to second buffer (pH4) and press YES.
After briefly displaying WAIT, the display
returns to the normal readout.
The display now flashes the
pH value. The instrument
waits for the reading to stabilize.
NO YES
pH NO YES
pH
YES
pH
ENT
MAN.CAL
DISPLAY
HOLD
NO MODE YES
YOKOGAWA
MODE
TEMP
AUT.CAL
MEASURE
NO YES
pH
Automatic Calibration Press the MODE key. AUT.CAL appears in the display, and the
YES/NO key prompt flags flash. Press YES.
NEW.SNS: Display flashes YES/NO
answer YES if new sensor fitted or NO if not.
Care! YES resets logbook calibration data.
Insert the sensors in pH 7 buffer solution.
Press YES to start calibration.
NO
Note: To start calibration with another solution, press NO to cycle through the other options.
"CAL 7" NO "CAL 4" NO "CAL 9" NO "CAL 7"
YES
When the reading is stable, the CAL END
message appears. Press YES.
After briefly displaying WAIT, the display returns to
the normal readout.
6-5. Calibration procedures
6-5-1. Automatic calibration