Manual

76
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.
pH 310 model only:
When auto endpoint feature is switched on, it
automatically holds reading after 5 seconds of stability. The HOLD indicator appears on the display. Press HOLD to release auto end- point feature.
MODE..............Selects the measurement parameter. Press MODE to toggle between
pH; mV (or relative mV); and date/time (date/time available on pH 310 model only). In pH calibration mode, press MODE to access temperature calibration.
CAL/MEAS......Toggles user between Calibration and Measurement mode.
• If you were in pH measurement mode, press CAL/MEAS to enter
pH calibration mode.
• If you were in mV measurement mode, press CAL/MEAS
to enter mV calibration mode.
NOTE: Temperature calibration is available from pH calibration mode; see page 17 for directions. In advanced set-up mode: Press CAL/MEAS to return to main menu from sub menus. Press CAL/MEAS again to return to measurement mode from main menu.
ENTER ............Press to confirm values in Calibration mode and to confirm
selections in Setup mode.
▲▼
..........Press ▲/▼ in setup mode to scroll through subgroups. Also press
▲/▼ in mV calibration mode to adjust the calibration value.
MI/MR work in the measurement mode. MI (memory input) stores the measured value into memory. MR (memory recall) recalls the sets of values stored in the memory.
SET....................Press to enter SETUP
mode. SETUP mode lets you customize meter preferences and defaults, and view calibration and electrode offset data.
MI MR
2.2
MODE
HOLD
ENTER
ON
OFF
CAL
MEAS
MI
▲
MR
▼
SETUP
Battery compartment
Remove these two screws to access battery compartment
3. Preparation
Inserting the Batteries
Four AAA batteries are included with your meter. 1. Use a Phillips screwdriver to remove the two screws holding the battery cover.
See figure below.
2. Lift off battery cover to expose batteries. 3. Insert batteries. Follow the diagram inside the cover for correct polarity. 4. Replace the battery cover into its original position. Screw cover back into place.
3.1
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