Section 5 Maintenance - Omega OS1592 User Manual

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OS1592 Infrared Fiber Optic Thermometer/Transmitter
MAINTENANCE
Routine maintenance is not required except for periodic re-calibration,
occasional inspection of the input and output ends of the fiber assembly
for cleanliness, and a check for broken fibers if damage is suspected.
The optical fibers will provide satisfactory service indefinitely if handled
with normal care. Although the fibers are protected by a steel jacket, they
can be damaged if the jacket is stretched, twisted, shocked or tightly bent
to a small radius. The ends should be protected from damage,
contaminants, and temperatures above 371°C (700°F). OMEGA does not
warrant broken or damaged fibers due to mishandling.
Fiber or lens damage or contamination should be suspected if there is a
sudden change in the calibration of the unit.
Dust and particles on the lens or on the output end of the fiber bundle
may be removed by use of an air jet or a soft brush. Dirt films and other
accumulations should be removed by the use of soft cotton or a Q-tip
moistened with Windex, triple-distilled alcohol or other grease-free and
solids-free solvent. A final wiping with dry cotton is recommended.
If the fiber bundles are to be removed from the detector head assemblies
for extended periods, the fiber bundle receptacles in the head should be
taped or capped to prevent the entry of foreign matter.
A periodic check of the electrical ground connection can be helpful in
preventing RF-pickup problems.
Fiber cables are not interchangeable, as a fiber optic cable assembly is
calibrated with the electronic unit as a system.
There is a gain adjustment for the fiber optic cable assembly inside the
electronic box. This gain adjustment will compensate for any small shift in
temperature reading due to aging of the fiber optic cable over time. Open
the front cover of the Electronic Box. There is a small plug-in PC board
with a potentiometer on one side. This potentiometer provides the gain
adjustment for the fiber optic cable.
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