Linear potentiometer sensor designed for dynamic crack monitoring and high-frequency data acquisition.
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Linear potentiometer sensor designed for dynamic crack monitoring and high-frequency data acquisition.
The Geolook Potentiometric Crackmeter is a linear displacement sensor based on conductive plastic technology. Unlike Vibrating Wire sensors which are designed for static, long-term readings, the Potentiometric Crackmeter provides an instantaneous voltage output proportional to movement. This rapid response time makes it the ideal choice for dynamic monitoring applications, such as measuring crack behavior during traffic loading on bridges, railway vibrations, or seismic events. It connects easily to high-speed data loggers and oscilloscopes.
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Choosing between a Vibrating Wire (VW) and a Potentiometric sensor depends on 'Time'.
The G71-R250 is supplied with ball-joint rod ends. This is a critical feature that prevents the sensor rod from bending or binding if the structure undergoes shear movement or misalignment.
Anchors are installed on either side of the fissure, and the sensor is set to its 'mid-point' to allow for both expansion (opening) and contraction (closing) measurements.
The sensor functions as a voltage divider. It consists of a shaft attached to a wiper that slides along a conductive plastic track. As the shaft moves (due to crack movement), the voltage at the wiper changes linearly relative to the input voltage.
Because it is a purely analog resistive device, the resolution is effectively infinite, limited only by the noise floor of your data logger.
Choosing between a Vibrating Wire (VW) and a Potentiometric sensor depends on 'Time'.
The sensor functions as a voltage divider. It consists of a shaft attached to a wiper that slides along a conductive plastic track. As the shaft moves (due to crack movement), the voltage at the wiper changes linearly relative to the input voltage.
Because it is a purely analog resistive device, the resolution is effectively infinite, limited only by the noise floor of your data logger.
The G71-R250 is supplied with ball-joint rod ends. This is a critical feature that prevents the sensor rod from bending or binding if the structure undergoes shear movement or misalignment.
Anchors are installed on either side of the fissure, and the sensor is set to its 'mid-point' to allow for both expansion (opening) and contraction (closing) measurements.
We are currently updating the specific model configurations and technical datasheets for this product category.