Dynamic asphalt strain gauges measure axial strain in the flexible pavement under high frequency (dynamic) conditions. Utilizing four active elements of a Wheatstone bridge circuit, this gage compensates for temperature, rejects bending strain (may also be configured to measure bending and reject axial strains), and compensates for lead resistance providing a sensor that is easily
adaptable to most data acquisition systems without requiring additional signal conditioning.
This low-modulus, ruggedized sensor is built to withstand the high temperature and vibratory rolled compaction required for asphalt placement. Each sensor is individually calibrated and supplied with fabrication Quality-Control documentation.
| Input Resistance | 350Ω Nominal |
| Output Resistance | 350Ω Nominal |
| Sensitivity at 1000 µϵ | ~1.3mV/V Nominal |
| Excitation | 2-5 VDC |
| Operating Temperature Range | -34° to 200° C |
| Lead Wire | #22 AWG Truck-Weight Lead Wire |
*Specifications subject to change without notice on account of continued product development
