






Keyence Fiber Optic Sensor FU-77TZ
$79.20 原价为:$79.20。$66.00当前价格为:$66.00。
The KEYENCE FU series is a diverse line of fiber optic units designed for use with KEYENCE fiber amplifiers. Featuring high sensitivity, EMI immunity, and flexible installation in tight spaces, the series includes high‑power long‑distance models, small‑spot precision types, environment‑resistant (heat/chemical) versions, and specialized units for area or liquid level detection. Ideal for applications such as minute object detection, positioning, transparent object sensing, and harsh environments (high temperature, oil, chemicals).
📝 Main Categories & Features
| Category | Representative Models | Key Features | Typical Applications |
|---|---|---|---|
| Standard/Easy installation | FU‑77TZ, FU‑77TG | – Rugged stainless steel housing, IP67 rated – Unique hexagonal or right‑angle design for tidy wiring and reduced breakage risk | General object detection in ordinary industrial environments. |
| High power / Long distance | FU‑40G, FU‑71, FU‑5F | – FU‑40G: Sensing distance up to 2.3 m, dual‑lens design good dust immunity – FU‑71: Through‑beam type, sensing distance up to 1800 mm, high power – FU‑5F: Reflective type, sensing distance up to 2300 mm | Detecting black or highly reflective metal parts; remote positioning; through‑beam detection of large objects. |
| Small spot / Precision detection | FU‑10, FU‑35FZ, FU‑22X, FU‑63Z | – FU‑10: Beam spot adjustable 0.9–3.5 mm – FU‑22X / FU‑63Z: Reliably detect tiny objects down to Ø0.005 mm; coaxial reflective type resists background interference, suitable for reflective or transparent objects | Semiconductor wafer positioning; small part detection; transparent or highly reflective object detection. |
| Environment‑resistant | FU‑81C (heat‑resistant), FU‑85A (chemical‑resistant), FU‑77TZ (high‑flex) | – FU‑81C: Heat‑resistant to 350°C – FU‑85A: Heat‑resistant to 105°C, fluorocarbon resin coating resists oil and chemicals – FU‑77TZ: High flexibility, bend resistant, stainless steel housing | Around injection molding machines, high‑temperature furnaces; painting, plating lines; robot arms with frequent bending motion. |
| Specialized / Special applications | FU‑A100 (area), FU‑95Z (liquid level), FU‑93Z (immersion), FU‑18M (semiconductor) | – FU‑A100: 100 mm wide area beam for detecting objects with large positional variation – FU‑95Z/93Z: Pipe‑mount or immersion liquid level detection – FU‑18M: Ultra‑narrow beam (approx. 3°), dedicated to semiconductor wafer positioning | Detecting objects at random positions on a conveyor; pipe liquid level monitoring; wafer and PCB inspection. |
🛠️ Typical Model Specifications & Application Quick Reference
Quick reference for selected FU series fiber units:
High‑power detection
FU‑5F (reflective): Sensing distance (MEGA) 2300 mm
FU‑71 (through‑beam): Sensing distance (MEGA) 1800 mm
FU‑40G (narrow‑beam reflective): Sensing distance (MEGA) 2300 mm
FU‑4F (through‑beam): Sensing distance (MEGA) 2300 mm
Standard detection
FU‑67V (reflective): M6 thread, fiber length 2 m, can be cut
FU‑77TZ (through‑beam): IP67, stainless steel sheath
FU‑23X (reflective): Fiber length 50 cm, cannot be cut
FU‑25 (reflective): Sensing distance (MEGA) 560 mm
High‑precision / minute object detection
FU‑22X (reflective): Minimum detectable object Ø0.005 mm
FU‑38 (limited‑reflective): Minimum detectable object Ø0.005 mm
FU‑35TZ (limited‑reflective): Suitable for detecting flat wafer position; can detect 0.005 mm gold wire
FU‑63Z (coaxial reflective): Background interference resistant, good for reflective or transparent objects
Environment‑resistant
FU‑81C (heat‑resistant): Withstands up to 350°C, designed for high‑temperature environments
FU‑85A (chemical‑resistant): Withstands up to 105°C, fluorocarbon resin coating, oil and chemical resistant
FU‑77TZ (high‑flex): Stainless steel sheath, bend resistant, impact resistant
Specialized types
FU‑A100 (area detection): Beam area 100 × 0.25 mm for detecting presence/absence within the zone
FU‑95Z (liquid level): Pipe‑mount liquid level detection
FU‑93Z (immersion): Teflon® outer sheath, rigid but bendable, suitable for in‑liquid detection
FU‑18M (semiconductor): Ultra‑narrow beam (approx. 3°) for wafer alignment and positioning
FU‑12 (area detection): Example – used to detect damaged valve components for non‑contact rapid inspection
⚙️ Important Notes & Selection Advice
It is important to note that the FU series are fiber units; they must be used together with a KEYENCE fiber amplifier (such as the FS‑V30, FS‑N series, etc.) to form a complete fiber optic sensor system.
When selecting a model, we recommend following these steps:
Clarify your detection requirements: Identify the material, shape, and size of the target object, and evaluate the installation space and environmental factors (temperature, chemicals, etc.).
Choose the detection mode: Based on the object’s characteristics, decide among through‑beam, reflective (including limited‑reflective), or area type. For transparent objects, retro‑reflective types are often a good first choice.
Match key parameters: Focus on sensing distance, minimum detectable object size, spot size, and bend radius, among others.
Verify environmental suitability: Ensure the selected model’s ingress protection (IP) rating, heat resistance, and chemical resistance meet the site requirements.
Consider the amplifier combination: The final detection performance of the fiber depends on the combination with the connected amplifier, so the two should be evaluated together.


1. Order Processing: Orders are processed within 1-2 business days after payment confirmation. Weekends and holidays are excluded from processing times.
2. Shipping Options & Timelines :
a.Standard Shipping: 3-7 business days (varies by destination).
b.Expedited Shipping: 2-3 business days (additional fees apply).
c.International Shipping: 7-15 business days (customs may affect delivery).
Notes:
For in-stock items, we ship within 5 business days after payment is received.
Out-of-stock or custom products will have timelines confirmed via email after order placement.
3. Tracking Your Order: You’ll receive a tracking number via email once your order ships. Use our Order Status Portal to check real-time updates.
4. Delivery Issues?
Failed deliveries: Contact your local carrier first, then reach out to us.
Wrong/missing items? Email us within 7 days of delivery with order details.
5. Important Notes Customs & Duties: International buyers are responsible for any import fees.
Address accuracy: Double-check your shipping details—we can’t modify orders once processed!
Questions? Visit our FAQs or contact: Info@siesourcecontrol.com


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