18
MA300TS-0210
Is the oxygen sensor being used
after being suspended for a long
time (several months)?
The oxygen sensor membrane and electrolytic
solution may be degraded. Replace the
membrane and electrolytic solution with new
ones. After replacing, allow the sensor to
stabilize for several hours to 12 hours or more,
and then calibrate it.
Is the membrane on the tip of
the oxygen sensor
contaminated?
Clean the oxygen sensor and remove the
contaminants. (Refer to section “6.
Maintenance (1) Cleaning after measurement”
on page 16.)
If the contaminants cannot be removed,
replace the membrane and electrolytic solution
with new ones. After replacing, allow the parts
to stabilize for several hours to 12 hours or
more, and then calibrate.
Was zero calibration performed? Perform zero calibration. (Refer to page 11.)
Use zero standard solution (zero water) that
has been prepared just before the calibration,
not solution made in advance.
If the symptoms do not improve
after taking the above actions,
the oxygen sensor may have
reached its life.
Order a new oxygen sensor and replace the old
one.
Contaminants have
solidified in the housing.
Fill the housing with lukewarm water and allow it to soak. Then, wipe off the
contaminants with a soft sponge, etc.
If the solution contains oils and fats, soak the sensor in a neutral detergent, and
wipe off the contaminants with a soft sponge, etc.
* Do not use alcohol when cleaning. Do not use a metal brush or hard sponge.
Solids were suctioned with
the sample water and got
clogged in the tubing.
When using the 3-way check valve, replace the 3-way check valve with a new
one.
If the injection section or discharge section is clogged, use the enclosed cleaning
brush and remove the clogged matter as shown in the photo.
<Example of using cleaning brush>
If the cleaning brush is not available, it may be possible to remove the clogged
material by attaching the syringe directly to the injection/discharge section and
applying pressure.
Reference: Refer to the Iijima Electronics Corporation website for information on troubleshooting, handling, and maintenance.
https://www.iijima-e.co.jp/
Contact the dealer from which you purchased the product if you have any questions or inquiries regarding handling.
