4
2. Display and Keypad Functions
Display
The LCD has a primary and secondary display.
• The primary display shows the measured pH or Conductivity (µS or mS) reading.
• The secondary display shows the temperature of the reading in °C.
The display also shows error messages, keypad functions and program functions.
C
pH
ATC
READY
MEAS
pH
CAL
CON
µ
mS
pH
Temp
HOLD
ERR
2.1
Primary display
CONfirm
indicator
Secondary display
CALibration
indicator
MEASurement
mode indicator
READY
indicator
HOLD
indicator
ERRor
indicator
Buffer
indicator
Probe
indicator
Low battery
indicator
pH calibration
mode indicator
Temperature
calibration
mode indicator
Automatic
Temperature
Compensation
indicator
Keypad
The large membrane keypad makes the instrument easy to use. Each button, when
pressed, has a corresponding graphic indicator on the LCD.
ON/OFF
............Powers and shuts off the meter.
HOLD
..............Freezes the measured reading. To activate, press HOLD while in
measurement mode. To release, press HOLD again.
MODE
..............Selects the measurement parameter (conductivity or pH).
Press MODE to toggle between pH and Conductivity mode.
CAL/MEAS
......Toggles user between Calibration and Measurement mode.
• In Conductivity Measurement mode, press
CAL/MEAS to enter Conductivity Calibration mode.
• In pH Measurement mode, press CAL/MEAS
to enter pH Calibration mode.
NOTE:
Temperature calibration is accessible from pH Calibration
mode; see pages 14-15 for instructions.
ENTER
............Press to confirm your calibration values in Calibration mode.
▲
/
▼
................Scrolls values up and down in Calibration mode.
• In pH mode,
▲
/
▼
scrolls through the auto buffer values
4.00, 7.00 and 10.00.
• In Conductivity and Temperature Calibration mode,
▲
/
▼
lets you
increase or decrease the value incrementally.
5
HOLD
MODE
ON
OFF
CAL
MEAS
ENTER
2.2
MODE
HOLD
ENTER
RANGE
ON
OFF
CAL
MEAS
▲
▼
