YOKOGAWA 53005-E, User Manual, Page: 21 / 24

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 vendor from
purchased the product.
21
Troubleshooting
Symptom Cause Things to Check
Display does not
appear.
Laser beam is not
radiated.
Measured value is
incorrect.
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
stained. Clean the laser ejection exit referring Body of
Maintenance described in page 22.
Voltage necessary for lighting
up laser beam is not satisfied. Replace the batteries, (The -b- sign blinks.) or re-install
the batteries correctly.
The lens unit is stained. Clean the lens referring Lens of Maintenance
described in page 22.
Field of view is deviated from
the measuring object. Center the laser beam on the measuring object by
referring Field of View described in page 10.
The measured object is smaller
than the field of view. Adjust the measuring distance referring to the Field of
view described in page 10.
The thermometer is affected
by a nearby heating source. 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
affected by considerable
temperature fluctuation. Wait until the temperature of thermometer stabilizes.
53005-6E 12.5.12 10:04 AM ページ 21