Optex PT-7LD, Инструкция по эксплуатации

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When the above symptoms are not removed even after the corresponding countermeasure has
been taken, the thermometer may have a fault. In such cases, contact the shop in which you
purchased the product or OPTEX FA.
21
Troubleshooting
Symptom Cause Countermeasure
Display does not
appear.
Laser beam is not
radiated.
(*Laser beam is not
radiated during the
continuous
measurement mode.)
Measured value are
unusual.
Measured value are
unstable.
The batteries have been exhausted.
Battery installation is incorrect. Replace the batteries.
Re-install the batteries correctly.
The laser ejection exit is dirty. Clean the laser ejection exit according to the “Body” in
“Maintenance method ” in page 22.
Voltage necessary for lighting
up laser beam is not satisfied. Replace the batteries, (The -b- symbol blinks.) or re-install
the batteries correctly.
The lens section is dirty. Clean the filter referring to the “Lens” in “Maintenance
method” of page 22.
The sight is out of the range. Locate the optical axis on the center of an object to be
measured referring to the “Field of view” in page 10.
The measured object is smaller
than the field of view. Adjust the measuring distance referring to the “Field of
view” in page 10.
The measured object is adjacent
to a high-temperature object and
subjected to heat. Cut off the heat sources with a shield or such.
A shiny metal surface is
being measured.
This thermometer causes an error when measuring a
shiny metal surface.
Perform measurement after putting optional blackbody
tape onto the object.
The thermometer is being subject
to sudden temperature change. Set aside the thermometer until the temperature becomes
stable.