Hach sensION3, Instruction Manual, Page: 31 / 52

31
SECTION 3,
continued
3.3 Reviewing Calibrations
pH calibrations result in a linear calibration curve, so only one
slope value is displayed in Cal Review mode. To view calibration
data, make sure the meter is in Reading mode, then press
REVIEW
.
The display will show the calibration time. Press the up arrow key
to scroll through the slope and pH values of the buffer standards.
The mV values for the standards can be viewed by pressing the
pH/mV
key. This toggles between pH and mV values.
3.4 Measuring Samples
After successful calibration, the meter is ready to measure
samples. See instructions in the electrode manual for more
information and specific steps.
1. Place the electrode in the sample. Press
READ/ENTER
.
Stabilizing...
will be displayed, along with the
sample temperature and the pH or mV reading. These values
may fluctuate until the system is stable.
2. If the Display Lock is enabled,
Stabilizing... will disappear and
the display will “lock in” the pH or mV and sample
temperature when a stable reading is reached. If the Display
Lock is off,
Stabilizing...
will still disappear, but the display
will show the current reading and temperature and the values
may fluctuate.
3. Record or store the pH and mV value. See SECTION 4 on
page 33 for more information on storing and recalling data.
4. Remove the electrode from the sample, rinse with deionized
water and place the electrode in the next sample. Repeat steps
1–3 for each sample.
5. When measurements are complete, press the
I/O/EXIT
key to
turn the meter off. Rinse the electrode with deionized water
and blot dry. Replace the protective cap on the electrode. See
the electrode manual for specific storage instructions.