Plastic Fiber Optic Assembly model PBT26U
.02" diameter bifurcated fiber with threaded sensing end
PBT26U
p/n 26080
Description
Model PBT26U is a bifurcated plastic fiber optic assembly with an
M3 x 0,5mm threaded nickel plated brass sensing end.
Threaded sensing end
The PBT26U operates in the diffuse sensing mode. Sensing light is
transmitted and received through the threaded sensing end. Objects
are detected by the light they reflect back through the sensing end.
Fiber core diameter is .02 inch.
The PBT26U may be used with plastic fiber optic sensors from the
following Banner sensor families: D12, OMNI-BEAM, MAXI-BEAM, VALU-BEAM, Q45, MINI-BEAM, and
ECONO-BEAM. See page 2 for further information.
Additional Specifications
SENSING RANGE: Afunction of the sensor. For further information, see the
CHEMICAL RESISTANCE: The acrylic core of the monofilament opti-
cal fiber will be damaged by contact with acids, strong bases (alkalis) and
solvents. The polyethylene jacket will protect the fiber from most chemical
environments. However, materials may migrate through the jacket with long
term exposure. Samples of fiber optic material are available from Banner for
testing and evaluation.
data sheet packed with the sensor, or refer to the Banner product catalog.
TEMPERATURE EXTREMES: Temperatures below -30°C will cause
embrittlement of the plastic materials but will not cause transmission loss.
Temperatures above +70°C will cause both transmission loss and fiber
shrinkage.
MINIMUM BEND RADIUS OF PLASTIC FIBER: 0.5 inch (12 mm)
REPEATBENDING/FLEXING: Lifeexpectancyofplasticfiberopticcable
is in excess of one million cycles at bend radii of no less than the minimum
(stated at right) and a bend of 90 degrees or less. Avoid stress at the point where
the cable enters the sensor ("control end") and at the sensing end tip. Coiled
plastic fiberoptic assemblies are recommended for any application requiring
reciprocating fiber motion.
CONSTRUCTION:
OPTICAL FIBER: acrylic monofilament
PROTECTIVE JACKET: black polyethylene
THREADED END TIP and hardware: nickel plated brass
OPERATING TEMPERATURE: -30 to +70°C (-20 to +158°F).
Fiber Cutting Information
This Banner plastic fiber is designed to be cut by the customer to the length required for the appli-
cation. To facilitate cutting, a Banner model PFC-1 cutting device is supplied with this fiber.
Cut the fiber as follows:
PFC-1 Cutting Device
1) Locate the "control end" of the fiber (the unfinished end). Determine the length
of fiber required for the application. At the control end of the fiber, separate the two
fibers. Lift the top (blade) of the cutter to open the cutting ports. Insert one of the
control ends through one of the two small cutting ports on the PFC-1 cutter so that the
excess fiber protrudes from the back of the cutter.
2) Double-check the fiber length, and close the cutter until the fiber is cut. Using a differ
cutting port, cut the second control end to the same length as the first.
3) Gently wipe the cut ends of the fiber with a clean, dry cloth to remove any contamination.
Do not use solvents or abrasives on any exposed optical fiber. Do not use a cutting port more than once. The blade
may tend to dull after one cut.
Printed in USA
p/n 03431L4B
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