Vibrating Wire RCR

The Worldsensing Vibrating Wire RCR is an ultra-robust 5-channel data logger designed to be embedded in precast concrete to measure real-time stress and strain in concrete segments. With up to 3 km radio range in tunnels, it is ideal for construction projects underground.

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Datasheet

Product information:

Applications

Assess the strain and stress of tunnel lining segments, bridge pillars, concrete slabs, segmental bridges, diaphragm walls, precast foundations, shafts, columns and beams
Monitor structural health of tunnel linings and other concrete-based infrastructure from as early as the concrete segment manufacturing stage
Monitoring for construction projects underground

Key Features

Internal antenna
Robust design with polymer casing and re-enterable insulating resin for concrete resistance
Long range communications: up to 400 m and up to 3 km with good visibility in tunnels with interfering machinery such as TMB
Advanced Mobile App configuration for quick setup and sensor detection
Advanced device management features to detect sensor connectivity and reduce noise interference

Technical Specifications

Input Types: Vibrating wire and thermistor per channel
Memory: 73 500 readings

Vibrating Wire

Measurement Method: Embedded algorithms increasing immunity to noise
Excitation Wave: ±5 V
Measurement Range: 300 to 7000 Hz
Accuracy: From 0.008% to 0.013% (depending on frequency sweep range)
Resolution: <0.01 Hz (depending on frequency sweep range)