# Fibre Optic Sensing Cable

**Special Sensing** **Fibre Optic Cable for Oil** **Industry**

Special Sensing Fibre Optic Cable for Oil Industry is a type of sensing optical cable used for monitoring underground temperature and sound waves.The optical cable is composed of four layers of structure:outer seamless steel pipe, aluminum sheath,inner seamless steel pipe,and outer PP or HOPE sheath.The product has strong mechanical and sealing properties and is suitable for oil well sensing and monitoring applications below 300℃ .

 ![](https://cdn.shopify.com/s/files/1/0758/0362/3703/files/dft20251008.png?v=1759895012)

**Features**

> 1.Three  layer seamless  tube  protection  ensures  the  mechanical  strength  and  good  sealing  of  the optical  cable.  2.Accurate fibrelength control ensures that the sensing fibre is in a free state and is not affected by external  forces
> 
> 3.Seamless steel pipes are made of 316 stainless steel or nickel 825 material,which has good corrosion resistance  strength
> 
> 4.Seamless aluminum sheath has excellent hydrogen resistance and isolation performance.  5.The square outer sheath is easy to fix and install in the well,and has a good buffering and protection effect  on  mechanical  impact  
> 
> ![](https://cdn.shopify.com/s/files/1/0758/0362/3703/files/dft2025100803.jpg?v=1759897233)
> 
> **Applications**. Special sensing optical cable foroll wells below 300℃
> 
> ### **Parameters**
> 
> **Items**
> 
> **Parameters** **or** **Description**
> 
> **Fibre** **optic**
> 
> Fibre type
> 
> Single mode/Multimode/Fibre grating array
> 
> **Inner** **seamless** **steel** **pipe**
> 
> Material
> 
> SUS 316L
> 
> External diameter
> 
> 2.60
> 
> **Aluminum** **tube**
> 
> Material
> 
> Aluminium
> 
> External diameter
> 
> 4.4mm
> 
> **External** **seamless** **steel** **pipe**
> 
> External diameter
> 
> 6.35±0.05mm
> 
> Material
> 
> SUS 316L or Inconel 825
> 
> Thickness
> 
> 0.89mm
> 
> **Outer** **sheath**
> 
> External diameter
> 
> 11\*11mm
> 
> Material
> 
> PP or HDPE
> 
> **Maximum** **attenuation**
> 
> Maximum
> 
> attenuation(20℃)
> 
> ≤3.5dB/km@850nm; ≤1.5dB/km@1300nm
> 
> **Mechanical** **properties**
> 
> Long term working tension
> 
> Long term load ≥500ON
> 
> Short term work pull
> 
> Short term load≥1000ON
> 
> Working temperature
> 
> \-55~300℃
> 
> Pressure resistance strength
> 
> ≥70Mpa
> 
> **Weight**
> 
> Net weight of optical cable
> 
> Approximately 230kg/km

## Details

- **Price:** 0.0 USD
- **Vendor:** DFT TELECOM
- **Type:** 电脑网络
- **Tags:** 5G, dfttelecom, fiberoptic cable, fiberoptic Solutions

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 0.00 USD | In stock |

## Images

- Fibre Optic Sensing Cable
- Fibre Optic Sensing Cable

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> Source: [DFT TELECOM ](https://dfttelecom.com/products/fibre-optic-sensing-cable)
> Updated: 2026-08-28