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Replacingthemembranefilter
If liquids enter the membrane filter, the gas path will be clogged, and
measurement will not be possible. If liquids accidentally get inside,
replace the membrane filter to resume measurements. (Note that if the
liquid contains oil, it might pass through the membrane filter. Carefully
observe the passage state when measuring samples containing oil.)
1.
Remove the needle from the membrane filter.
2.
Remove the membrane filter from the check valve.
Hold the rotating section of the check valve with fingers so that it does not spin while removing
the membrane filter.
3.
Attach the new membrane filter.
Hold the rotating section of the check valve with fingers so that it does not spin while attaching
the membrane filter.
4.
Attach the needle.
Since the liquid also passes through the needle, replace the needle with a new one if there is
residual liquid or clogging.
Replacing the check valve
Check the state of the check valve. If it is clogged or if the operation is faulty (gas
backflow), replace it with a new check valve
1.
Remove the membrane filter and needle from the check valve.
When removing the parts from the check valve, hold the rotating section of the check valve with
fingers so that it does not spin.
2.
Remove the check valve from the sampling tube with fitting.
3.
Attach a new check valve onto the sampling tube with fitting.
Attach so that the narrower side of the check valve faces
the sampling tube. The gas will not be suctioned properly
if installed backward.
4.
Attach the membrane filter and needle.
If the needle or membrane filter is clogged, replace it with a new part.
Replacingthesamplingtubewithfitting
The tube must be replaced with a new part if it is
clogged with powder or liquid.
The tube and fitting section are connected beforehand.
If the parts are disconnected, do not attempt to reattach them.
Instead, replace them with a new part.
1.
Hold the tube fitting section on the main unit side with fingers,
and pull the tube off the main unit.
2.
Attach the new sampling tube with fitting.
Push the end of the tube firmly and deeply into the tube fitting part to fix it in place.
Push in about 8 to 9mm from the end of the tube.
•
If the needle, membrane filter, and check valve are attached loosely, the gas may leak out, and a
correct measurement value may not be obtained. Tighten the parts securely until there is no play.
•
If the sampling tube with fitting is not pushed in firmly and deeply, the gas may leak out, and a correct
measurement value may not be obtained. Make sure to push the tube in firmly and deeply.
Membrane filter
Check valve
Note
Note
