• In the power-off mode, press this key to turn on the meter
• In the measurement mode, press this key to turn on or turn off the backlight
display
In the measurement mode, press and hold this key for 2 seconds to turn off the meter
• pH70+DHS: press this key to select measurement mode: pH → mV,
• COND70+: press this key to select measurement mode:
COND → TDS → SAL
• PC70+DHS: press this key to select measurement mode:
pH → mV → COND → TDS → SAL
• In the measurement mode, press this key to enter in the calibration mode
• In the calibration mode or the setup mode, press this key to return in
measurement mode
• In the recall mode (RM), press this key to return to the measurement mode
• In the measurement mode, press this key to enter in the parameter set-up
main menu
• In the calibration mode, press this key to confirm calibration
• In the parameter set-up mode, press this key to select programs
• In the mode of manual temperature compensation (MTC), when press and
hold these keys, the temperature value flashes, then press this keys to
change the temperature value, and press to confirm
• In the recall mode (RM), press momentarily this kesy to change the storage
serial number, press and hold this key to change the number quickly
• In the setup mode, press this key to scroll menu and submenu
• In the submenu mode, press this key to change parameters and values
• In the measurement mode, press key to store manually the value
• In the measurement mode, press key to recall the stored measuring
value
•BNC socket— pH electrode or ORP electrode
•RCA socket —temperature probe
•BNC socket— conductivity electrode,
•RCA socket — temperature probe
•BNC socket —pH electrode or ORP electrode,
•BNC socket— conductivity electrode,
•RCA socket— temperature probe
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