Yokogawa EXA PH202 2-Wire pH/ORP Analyzer - Manual (Page 76)

IM 12B07D02-01E
Calibration 6-3
pH
HOLD
NO YES
pH
YES
pH
HOLD
YES NO
pH
HOLD
pH
HOLD
HOLD
pH
NO
YES
12B6C3-31
NO YES
pH
HOLD
pH
YES NO
HOLD
pH
pH
HOLD
NO YES
NO YES
NO YES
NO YES
Automatic Calibration With Hold Active
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"
The single-
point
calibration
is now
complete.
put sensors
back in the
process and
press NO to
switch off
HOLD and
return to
measuring
mode.
Transfer to pH 4
buffer and press YES.
The instrument then waits for the reading
to stabilise. (The pH display flashes).
When the reading is stable, the CAL END
message appears. Press YES.
WAIT flashes briefly then HOLD
The calibration is now complete. Put the sensors back in the process
and press NO to turn off HOLD and return to the measuring mode.
NO
Press YES for single point
(As Pot) adjustment.
Press NO to proceed to calibrate Slope.
The instruments waits for
the reading to stabilise.
(The pH display flashes)
When reading Is stable,
the CAL END message
appears.
YES
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.
pH
ENT
MAN.CAL
DISPLAY
HOLD
NO MODE YES
YOKOGAWA
MODE
TEMP
AUT.CAL
MEASURE
6-5-2. Automatic calibration with HOLD active mA