Apera Instruments AI3719, Инструкция по эксплуатации, Страница: 9 / 16

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Calibration Indication Icon Calibration Standards Measuring Range
84 μS/cm 0 - 200 μS/cm
1413 μS/cm 200 - 2000 μS/cm
12.88 mS/cm 2 – 20 mS/cm
For conductivity calibration solutions, we recommend that users replace new solutions after 5 times
of use to keep the standard
solution’s accuracy. Do NOT pour the used calibration solutions back
into the solution bottles in case of contamination.
For the self-diagnosis information, please refer to the table below:
Symbol Self-Diagnosis information How to fix
The meter cannot recognize the
conductivity standard solutions.
1.
Make sure the probe is fully submerged in
the solution.
2.
Check if the standard solution is expired or
contaminated.
3.
Check if the conductivity electrode (two
black rods) is damaged.
4.
Check if the conductivity electrode is
contaminated. If so, please use a soft brush
with warm water to clean up.
Is pressed before
measurement is fully stable (
comes up and stays)
Wait for to come up and stays on screen
before pressing
During calibration, readings being
unstable for over 3 minutes
1.
Shake the probe to remove the air bubbles
on the surface of the black rods
2.
Check if the conductivity electrode is
contaminated. If so, please use a soft brush
with warm water to clean up.
3.
Soak the probe in 12.88mS/cm solution for
10 minutes, then rinse with distilled water.
The calibration reminder is
triggered.
It’s time to perform a new
conductivity calibration
Perform conductivity calibration or cancel
calibration reminder in ZenTest settings.