POWR/SET KEY:
Press key to turn on and off the meter. When the meter is
on, hold down for >1 second to enter setting mode.
CAL/ESC KEY:
Press to switch normal and calibration mode. While in
calibration, setting or recall mode, press to return to previous mode.
HOLD/REC KEY:
Press key to freeze current reading. Press again to unlock.
Press >1 second to switch normal and recall mode. When the meter is off,
press SET+HOLD simultaneously >1 second to disable auto-sleep mode
MODE/UP KEY:
Press this key to switch pH and mV. For pH probe, the valid
unit is pH and mV. For ORP probe, the valid unit is only mV. In setting or
calibration mode, press to increase value.
MEMORY/DOWN KEY:
Press to record current reading. In setting or
calibration mode, press to decrease the value
MAX/MIN/ENTER KEY:
Press to view the max./ min. of the memory in recall
mode. In setting or calibration mode, press to confirm and enter next step.
5
11
3
4
9
6
10
1
2
7
8
1
3
5
pH reading in unit pH or mV; ORP
reading in unit mV.
Low battery indicator
Review maximum and minimum
READY to indicate the reading is
stable
record
Freeze display
Meter is in recall mode
Total numbers of records
Real time clock
The meter is in auto temp.
compensation status
Temperature unit. ºC or ºF is selectable
Meter is in calibration mode
7
9
2
4
6
8
10
LCD
11
