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Wireless Strain Gauge SenSpot™ Sensor

Description

Wireless Strain Gauge SenSpot™ sensors offer a breakthrough technology for wireless strain measurement, enabling real-time and long-term monitoring of structural integrity. Stress and strain sensing are an integral part of most structural condition and strain monitoring system deployments used in bridges, buildings, and critical infrastructure.
SenSpot™ wireless strain gauge sensor uses Resensys’ proprietary sensing, scheduling, and ultra-low-power synchronization technology to deliver reliable, high-accuracy strain data over extended periods. Designed for both short-term assessments and permanent installations, SenSpot™ sensors provide consistent performance in demanding structural monitoring environments.
SenSpot™ strain gauge sensors are engineered to operate maintenance-free for up to a decade. After installation, these wireless strain gauge sensors do not need in-field calibration, battery replacement, or any other maintenance during their service life, making them ideal for long-term strain monitoring systems where access is limited and reliability is critical.

10+ Years Battery Life

without battery replacement

High Precision

1-µStrain resolution

Easy Installation

self-adhesive(e.g. steel)/
flange-mount(e.g. concrete)

Long Wireless Range

1 km free space

Quick Testing Available

easy to reuse in other places

High Sampling Option

record unusual strain event

Benefits of Wireless Strain Gauge Transmitter

• Long battery lifetime (10 years, typical)
• Wireless communication (IEEE 802.15).
• Small size and light weight
• High Accuracy: 1 microstrain typical resolution
• High-rate data transmission triggered by sudden strain changes
• Adjustable transmission interval
• Easy mounting
• High compatibility

Featured Applications of Wireless Strain Sensor

• Long- term and continuous monitoring of strain (stress).
• Detecting short-lived and transient high-strain events, e.g., caused by fast moving trucks on highway bridges or by turbulence on airframes.
• Monitors and measures strain for highway bridges, airframes, pipelines, machinery, cranes, tunnels etc.
• Conducts structural fatigue analysis, truck tests, and bridge load ratings.
• Assess structural health in nuclear powerplants, wind turbines, and railway infrastructure.
• Used in building monitoring systems, dam monitoring systems, and for monitoring retaining walls to accurately measure strain and ensure structural integrity.

Specs & Details of Wireless Strain Sensor

• Long lifetime: minimum expected life without battery replacement 10 years
• Lightweight： about 147 g (5.19 oz.)
• Wireless transmitter: 120 g (4.23 oz.)
• Cable (1ft): 10 g (0.35oz.)
• Strain sensing element: 17 g (0.6 oz.)
• Easy mounting:
    ○ Self-adhesive, no drilling is required (e.g. steel)
    ○ Flange-mount, drilling is required (e.g. concrete)
    ○ Quick installation, 1-2 minutes
• High accuracy: 1-µStrain resolution
• Wide working temperature: -40 to +65°C (-40 °F to +150°F)
• Long communication range: 1.0km free space
• Small size:
    ○ Wireless transmitter: 50mm (1.96”) x 50mm (1.96”) x 34mm (1.34”)
    ○ Strain Gauge sensor: 76.2mm (3”) x 33.4mm (1.30”) x 10mm (0.4”)
• Complementary data collected: temperature, battery voltage, etc.
• (Optional) High sampling rate; instant data transmission triggered by strain spikes:
  ○ A balance between power consumption and performance.
    ○ Perfect for detecting event and recording the waveform of a sudden strain         change.
    ○ The triggering threshold is adjustable from 16µStrain to 512µStrain; the         sampling rate can be changed from 10ms to 200ms.

Datasheet