Instruction Manual

1918
Note:
The disable sleep mode will be invalid after
everypowero󰀨.
AUTOMATIC TEMPERATURE
COMPENSATION (ATC) &
TEMP. UNIT SETTING
pH CHECK is capable of measuring with
Automatic Temperature Compensation.
ATC will show in the middle top of the LCD.
Temp. Unit Setting
To select the temp. unit (°C or °F), turn
o󰀨 the meter rst. When the meter is o󰀨,
press „
„ and „ „ at the same time
until the °C or °F appears on the LCD. Press
„
„ to select the preferred unit and then
press „
„ to save. „SA „ will appear on the
LCD for one sec. and then go back to normal.
CALIBRATION MODE (CAL)
Calibration is necessary and should be done
regularly, recommended everyday if the meter
is used often. The unique calibration design of
themeterfeaturesautomaticbu󰀨errecognition
to avoid errors.
Calibration
1. Power on the meter.
2.Place the electrode into a bu󰀨er solution
 (4,7 or 10), pH7 should be calibrated rst
and then 4 or 10 pH for better accuracy
3. Press „
„ to enter pH calibration mode.
The icon „CAL” will appear on the LCD for
one second and then pH value (4,7 or 10)
will be displayed on the LCD.
4.Ifprobeorbu󰀨erisinerror:
 If the bu󰀨er is incorrectly inserted or the
probe is damaged or the probe can not
 detect bu󰀨er in below voltage range,
the meter will escape calibration mode
automatically after 10 seconds. Text „End“
will appear on the LCD in one second and
then will go back to normal status.
Acceptable voltage range of each point:
PH 4.00 : 97mV..... 250mV
PH 7.00 : - 60mV..... 60mV
PH10.00 : - 250mV..... -97mV
5.Iftheproberecognizesthebu󰀨er:
If the probe successfully
 recognizesthebu󰀨er,
 thebu󰀨erpHvalue
(4 or 7 or 10) will
appear on the display
in 2 seconds.