Nova-Tech pH-Dissolved Oxygen Meter - Manual (Page 4)

7 6
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.
NOTE: 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.
MODE ..............Selects the measurement parameter. Press MODE to toggle between
pH; DO % saturation; DO mg/l (ppm). In pH and DO mg/l (ppm)
calibration modes press MODE to access temperature calibration.
NOTE: To switch between mg/l and ppm modes, see page 52.
CAL/MEAS......Toggles user between Calibration and Measurement mode.
• If you were in pH mode, press CAL/MEAS to enter
pH calibration mode.
• If you were in DO % saturation mode, press CAL/MEAS to enter
DO % saturation calibration mode.
• If you were in DO mg/l (ppm) mode, press CAL/MEAS
to enter DO mg/l (ppm) calibration mode.
NOTE: Temperature calibration is available from both pH and DO
mg/l (ppm) calibration modes; see page 19 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 lets you increment/
decrement the values in
the mg/l and temperature
calibration modes.
SETUP ..............Press to enter SETUP
mode. SETUP mode lets
you customize meter
preferences and defaults,
and view calibration and
probe data.
..........................LIGHT Press to activate
backlit display.
2.2
MODE HOLD
ENTER
ON
OFF
CAL
MEAS
▲ ▼
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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