Description

Fiber Optic Long-Gauge Crack Monitoring Sensor

SOFO Fiber Optic Crack & Displacement Sensor is a long-gauge fiber optic
sensor designed for continuous, real-time monitoring of crack opening and relative
displacement in structural elements.

The sensor is installed across a crack or joint using two anchor points and measures
changes in the distance between them. Crack opening or closing is derived directly
from the measured relative displacement.

How It Works

• Two anchor points are fixed on opposite sides of a crack
• Structural movement changes the distance between anchors
• Fiber optic technology measures the variation in optical path length
• Relative displacement is calculated and displayed in real time

Measured Parameters

• Crack opening / closing (relative displacement)

Typical Characteristics

• Long-gauge measurement (0.25 m to 10 m and more)
• High resolution (micron-level)
• Excellent long-term stability
• Immunity to electromagnetic interference (EMI)

Data Output & Integration

• Fiber optic interferometric output
• Compatible with SOFO reading units
• Continuous real-time data acquisition
• Integration with monitoring dashboards and alert systems

Typical Applications

• Structural crack monitoring in concrete and masonry
• Monitoring of joints and long cracks
• Historic buildings and sensitive structures
• Critical infrastructure and harsh environments

infrascan Integration

SOFO crack sensors are deployed as part of infrascan monitoring systems, providing
real-time visualization of crack displacement, long-term trend analysis, and
engineering-grade interpretation of structural behavior.