Oakton Ion 510 Series Manual - page 15
16
5. Ion calibration and measurement
(Ion 510 only)
Ion calibration
This instrument is capable of up to three-point ion calibra-
tion with a minimum of two-point calibration. Calibration
values are 0.10, 1.0, 10.0 or 100.0. All calibration should
be one decade apart. For example you may perform three-
point calibration to 0.10, 1.0 and 10.0, or two-point calibra-
tion to 10.0 and 100.0. Do NOT perform two-point
calibration to 1.0 and 100.0 the meter will display ”Er4“.
For best accuracy calibrate your meter to points with
similar concentrations to the solutions you want to test.
ION Calibration
The customized LCD display will indicate the following:
Display
Remarks
MEAS
Measurement mode is selected.
ppm
Unit of measurement
1. Connect an Ion Selective Electrode (ISE) to the BNC
input connector on the back of the meter (See page 8)
and turn the meter ON.
2. Press MODE to select ion measurement mode. If the
meter has not been previously calibrated in the Ion
mode, the display will read ”- - -“ in the primary display
—See Figure 31.
3. Dip the electrode into the first calibration standard.
Make sure to start with the calibration standard that has
the lowest concentration and move up to the standards
that have higher concentrations.
4. Press CAL to enter the ion calibration mode. The CAL
indicator appears above the primary display and primary
display reads ”0.10“ —See Figure 32.
5. The first calibration point of 0.10 ppm appears on the
display. If you do NOT wish to calibrate to this point,
press ▲ (up arrow) to skip and continue to the next
calibration point of 1.0 ppm or 10.0 ppm.
6. If you DO wish to calibrate to 0.10 ppm, make sure the
electrode is in the 0.10 calibration standard. The meter
will display the mV output of your electrode in the stan-
dard solution in the lower display. Allow the mV reading
to stabilize. When the reading stabilizes the READY
indicator will appear on the display. —See Figure 33.
Stabilization may take a few minutes depending on
electrode and standard concentration. Electrode response
in low concentrations is much slower than response in
high concentrations.
7. Press ENTER to confirm your calibration. The primary
display will flash for a few seconds —See Figure 34. The
meter will move on to the next calibration standard of
1.0 ppm.
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CAL
ppm
READY
CAL
ppm
READY
CAL
ppm
setup
mode
Figure 31
Figure 32
Figure 33
Figure 34