ElastiSense displacement sensors are engineered for extreme conditions and are ideal for monitoring cracks and joints in bridges, tunnels, buildings, retaining walls, and even rock faces. Datasheet and Installation Guide
ElastiSense Sensors
ElastiSense DS sensors use electroactive polymer technology to provide high resolution and accurate measurements of displacement.
Typical applications include monitoring joints and cracks in bridges, tunnels, buildings, dams, and other structures. They can also be used to monitor rock faces.
Operating Principle
DS sensors are designed to change their capacitance in direct proportion to the strain applied to the sensor.
The two ends of the sensor are anchored across a joint or crack. Opening of the crack or joint causes the sensor to extend and increases its capacitance. Closing of the crack or joint causes the sensor to contract, decreasing its capacitance. Internal circuitry outputs capacitance measurements to a datalogger.
Advantages
ElastiSense sensors are engineered to endure extreme conditions, with a fully encapsulated rubber core that withstands misalignments, heavy rain, UV light, gale force winds, extreme
temperatures, chemicals, dirt, and dust. They are more compact and have a lower profile than most other crackmeters and require no special mounting, no protection, and no
maintenance.
Specifications
Sensor type: ElastiSense DS Series.
Ranges: 50, 100, 250 mm
(2, 4, 10 inch). Other ranges available.
Resolution: 0.01% FS.
Accuracy: 0.5% FS.
Temp coefficient: <0.01%FS per °C.
Output signal: 4-20mA, other outputs available.
Update rate: 1000 updates/second.
Power Supply: 12-24V.
Force at max displacement: 120N.
Operating Temperature:
-40 to 85 or -40 to 105C
Extreme Durability
Flexible, waterproof, immune to misalignments, heat, cold, dirt, dust, chemicals, and vibrations.
Easy Installation
Low profile, no special mounting, no protection, no maintenance, and compatible with most data loggers.
Monitor Structural Health
Bridge bearings monitored to estimate remaining life.
Monitor Deformation
Wall monitored for deformation caused by settlement.
Monitor for Maintenance
Movement at joints monitored for fatigue and cracks.
Monitor for Safety
Hazardous rock face monitored for road safety.
Request a Quote
The EWS Switch and other wireless loggers are a good match for ElastiSense crackmeters.