Thrubeam Sensing Principle
Thrubeam fiber unit places the emitter and receiver on opposite sides for reliable detection of objects that interrupt the beam.
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Keyence
Keyence FU-59 Fiber Optic Sensor 24VDC
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$14.56
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PRODUCT DOCUMENTATION
Product Information
Technical specifications, features, applications and purchasing information.
Technical Specifications
| Brand | Keyence |
| Model Number | FU-59 |
| Product Category | Fiber Optic Sensor Unit |
| Fiber Unit Type | Thrubeam (Transmissive) |
| Optical Axis Diameter | ø0.7 mm |
| Fiber Unit Size | ø1.5 mm |
| Fiber Unit Length | 1 m, Free-Cut |
| Fiber Unit Diameter | ø1.0 mm |
| Minimum Bend Radius | R4 mm, High-Flex |
| Minimum Detectable Object | ø0.005 mm |
| Ambient Temperature | -40°C to +70°C |
| Weight | Approx. 3 g |
Key Features
ø0.7 mm Optical Axis
Narrow optical axis diameter supports detection of small objects passing between the fiber tips.
ø0.005 mm Minimum Object
Published minimum detectable object is ø0.005 mm, enabling fine wire and small-part detection.
1 m Free-Cut Fiber
Fiber length of 1 m can be cut to the required installation length for flexible routing.
R4 mm High-Flex Bend Radius
Minimum bend radius of R4 mm supports routing in compact machinery and moving applications.
Wide Temperature Range
Rated for ambient temperatures from -40°C to +70°C.
Applications
- Small part detection on high-speed lines
- Wire and thread presence monitoring
- Label and edge detection
- Semiconductor manufacturing equipment
- Micro-object counting
- Packaging machinery inspection
- Thrubeam sensing in tight spaces
Purchase Information
We support online purchase of the Keyence FU-59 Fiber Optic Sensor Unit. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.
Frequently Asked Questions
What is the Keyence FU-59? The Keyence FU-59 is a thrubeam (transmissive) fiber optic sensor unit with a ø0.7 mm optical axis.
What is the minimum detectable object of the FU-59? The minimum detectable object is ø0.005 mm.
What is the fiber unit length of the FU-59? The fiber unit length is 1 m and is free-cut, allowing adjustment to the required length.
What is the minimum bend radius of the FU-59? The minimum bend radius is R4 mm, and the fiber is designed for high-flex applications.
What is the ambient temperature range of the FU-59? The ambient temperature range is -40°C to +70°C.
Does the FU-59 include an amplifier? No. The FU-59 is a fiber unit that requires a compatible fiber amplifier for operation.
What should be checked before ordering the FU-59? Confirm that a thrubeam sensing arrangement is suitable, the ø0.7 mm optical axis matches the target size, and the fiber amplifier compatibility and routing space accommodate the R4 mm bend radius.
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