Dostmann Electronic 31.3001, Руководство по эксплуатации

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Note:
The disable sleep mode will be invalid after
every power off.
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
off the meter first. When the meter is off,
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 buffer recognition
to avoid errors.
Calibration
1. Power on the meter.
2. Place the electrode into a buffer solution
(4,7 or 10), pH7 should be calibrated first
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 buffer is in error:
If the buffer is incorrectly inserted or the
probe is damaged or the probe can not
detect buffer 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 buffer:
If the probe successfully
recognizes the buffer,
the buffer pH value
(4 or 7 or 10) will
appear on the display
in 2 seconds.