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Advanced Setting:
1. In pH, TDS or DO measuring mode, press
together for 3 sec. will enter advanced setting.
2. In pH advanced setting,
(1) Press to set “pH calibration type”, and
use or to choose “USA” or “NIST”.
Then press to confirm and return to
measuring mode.
(2) Press to turn on or off “Auto Lock”
function. Use or to choose on or off.
Then press to confirm and return to
measuring mode.
3. In TDS advance setting, press to set the ratio
between conductivity and TDS. Use or to
adjust ratio from 0.5 to 1.0. Then press to
confirm and return to measuring mode.
4. In DO advanced setting,
(1) Press
to set “Salt Compensation”. Use
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