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The LCD displays the EC or TDS value (automatically
compensated for temperature) on the secondary LCD, while
the tertiary LCD displays the sample temperature.
FREEZING MEASUREMENT VALUES
While in measurement mode, press and hold the SET but‑
ton until “HOLD“ appears on the tertiary LCD line for 1
second. The measurement reading will be frozen on the LCD
with “H” blinking.
→
Press any button to resume active measurements.
CALIBRATIONS
pH CALIBRATION
Select calibration type “STD“
from SETUP. Place the sensor into the
first calibration buffer. If performing a
two‑point calibration, use pH 7.01 buffer
first. The meter will enter the calibration
mode, displaying “pH 7.01 USE” and tag blinking.
SINGLE-POINT CALIBRATION
1. Place the probe in any buffer from the selected buffer set.
The meter will automatically recognize the buffer value.
2. If the buffer is not recognized or the calibration offset is
out of the accepted range “---- WRONG“ is displayed.
3. If the buffer is recognized “REC“ is displayed then
“WAIT“ until the calibration is accepted.
If using pH 7.01, after acceptance of the buffer press any
key to exit. The ”SAVE” message is displayed and the meter
returns to pH measurement mode.
If using pH 4.01 or 10.01 buffer the ”SAVE” message is
displayed and meter returns to pH measurement mode.
TWO-POINT CALIBRATION
Proceed with steps 1 through 3 under single‑point calibration
using 7.01 pH buffer first. Then follow the steps below:
OPERATIONAL GUIDE
CALIBRATIONS
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