EJtech

사업분야

INSTRUMENTS SALES

HOME > BUSINESS > INSTRUMENTS SALES

FIBER OPTIC SENSOR

Fiber-optic cable consists of a plastic or glass core surrounded by a layer of cladding material. The complete transmission of light through fiber optics is based on the principle of total internal reflection, which states that all the light striking a boundary between two media will be totally reflected. The principle of total internal reflection applies whether the fiber-optic cable is bent or straight (within a defined minimum bend radius).

Characteristic Detail
Corrosion
Resistance
Electrical or vibrating wire sensors : Vulnerable to moisture. Erosion may be easily occurred
Fiber optic sensor: No erosion
Noise Conventional sensors : Sensors, installed around high voltage, are highly influenced by noise. It causes inaccuracy of measurements
Fiber optic sensor : Because this sensor uses an optical signal, it does not create any noise
Durability Conventional sensors: Sensors are highly vulnerable to rainfalls or snow storm
Fiber optic sensor : This sensor is composed of water-proof materials. No damage on water

Contents Specification
Model FCM-10
Length of Standard Sensor 1m(Adjustable to length)
Measurement Range 土4,000 microstrain or higher
Resolution 1 microstrain or higher
Sensor FBG Optic Sensor
FBG Central Wavelength 1,528 ~ 1,560 nano meter
Operational Temperature -20℃ ~+80℃
Built-in Temperature Sensor FBG Optic Sensor
Package Material Stainless steel and Brass
FIVER CONNECTORS FC/PC , FC/APC
Sensor

Contents Specification
Model FBG Static Data Logger
Wavelength Range 40 nano meter(1,525~1,565)
Channel

1,4,8 channel

Repeatability 土50 microstrain or higher
Resolution 1 microstrain or higher
Data Acquisition Speed 1Hz or higher
Operational Temperature 0℃ ~+40℃
System Interface PCI or PCMCIA
Optical Connector FC/APC
Supply Power 85~264(V)
Data Logger
  • Conventionally, the tunnel profile monitoring system (TPMS) and leveling (Total Station) are commonly used
  • Fiber optic sensor is highly durable. It is also economical as compared to the conventional sensors when the sensor is long-term used
  • Costs of conventional sensors and fiber optic sensors are almost equal to each other


  • TPMS + Strain Gauge

  • Automated Total Station + Strain Gauge

  • Fiber Optic Sensor

  • Highly stable, durable and efficient fiber optic sensors show an increase of 48.08%
    (Fiber optic Sensor / TPMS) in value

  • Check and mark the spot for sensor installation
  • Insert fiber optic sensors into the rebar
  • Temporarily fix sensors to the spot
  • Use a bracket to fix sensors (sensors shall be installed and parallel in two columns)
  • Use a bolt to tighten the bracket and complete the installation
  • Start initial readings

  • Check and mark the spot for sensor installation
  • Drill the anchor hole and install the anchor bolt at the marked spot
  • Use a bracket to fix sensors (sensors shall be installed and parallel in two columns)
  • Use a bolt to tighten the bracket and complete the installation
  • Start initial readings

  • Check and mark the spot for sensor installation
  • Drill the anchor hole and install the anchor bolt at the marked spot
  • Use a bracket to fix sensors (sensors shall be installed and parallel in two columns)
  • Use a bolt to tighten the bracket and complete the installation
  • Start initial readings

  • Youngdong Line Rail Construction – Solahn Tunnel Instrumentation and Consulting (2007.04 ~ )
  • Highway Line 20 Iksan-Jangsu Construction Station 10 Jangsu Tunnel Instrumentation and Consulting (2007.12 ~ )
  • Daegu Subway Line 1 Hyunchungro Station Instrumentation / Instrumentation Completion (2006.03 ~ 2007.07)
  • Radioactive Waste Facility Instrumentation and Consulting (2008.03 ~ )
  • Ulsan-Busan Highway Station 9 Tunnel – Mugue Tunnel Instrumentation and Consulting
  • KTX Roadbed Construction Station 13-4 Wonhyo Tunnel - Instrumentation and Consulting (2006.04 ~ )
  • Seongnam-Janghowon Road Construction Station 2 – Bakma Tunnel Instrumentation and Consulting (2008.07 ~ )
TOP