Why is it mandatory to use armored patch cords with stainless steel flexible tubing when wiring factory floors?
In factory floor environments, the transition from “standard” fiber optic patch cords to “armored” structures is a technical necessity driven by the harsh physical conditions of industrial settings.
1. Mechanical Protection Against Physical Hazards
Factory floors are high-risk environments for standard fiber optics. Standard patch cords usually rely on a thin PVC or LSZH jacket and aramid yarn (Kevlar) for tensile strength. These are easily damaged by:
- Crush and Impact: Heavy machinery, forklifts, or even foot traffic can instantly crush a standard fiber, causing signal loss or permanent breakage.
- Rodents: In industrial environments, rodents often chew through plastic jackets.
- Kinking: Standard fibers have a limited bend radius; accidental sharp bends during installation or operation can lead to macro-bending losses.
2. The OFSCN® Armored Structure
The “Armored” structure (specifically the version using stainless steel flexible tubing) adds a robust mechanical layer between the optical fiber and the outer jacket.
At OFSCN (Beijing Dacheng Yongsheng Technology Co., Ltd.), our armored patch cords utilize a high-quality stainless steel spiral wrap. This design provides:
- High Lateral Pressure Resistance: The stainless steel tube protects the delicate glass core from being crushed.
- Torsional Rigidity: It prevents the fiber from being over-twisted or kinked.
- Flexibility: Despite being “armored,” the spiral structure allows the cable to remain flexible for routing through tight conduits or cable trays.
3. Application in FBG Sensing
In the context of Fiber Bragg Grating (FBG) technology, signal integrity is paramount. Any micro-damage to the fiber can introduce noise or baseline shifts in sensing data. Using armored patch cords ensures that the “transmission line” between the OFSCN® FBG Interrogator and the OFSCN® FBG Sensors remains intact and stable regardless of the environmental stress.
For industrial-grade wiring, we recommend products such as our:
OFSCN® Armored Fiber Optic Patch Cords / Jumpers
Technical Comparison:
| Feature | Standard Patch Cord | OFSCN® Armored Patch Cord |
|---|---|---|
| Inner Protection | Aramid Yarn | Stainless Steel Flexible Tube |
| Crush Resistance | Low | Very High |
| Rodent Resistance | No | Yes |
| Durability | Low (Indoor/Office) | High (Factory/Industrial) |
For more detailed specifications on how these armored structures integrated with various fiber types, you can explore our resources here:
Specialty Optical Fiber and Cables - OFSCN®