Asphalt Strain transducers (AST/VAST) are pavement sensors that measure axial strain in flexible pavement under high frequency (dynamic) conditions.
These low modulus, ruggedized sensors are built to withstand the high temperature and vibratory rolled compaction required for asphalt placement.
Utilizing four active elements of a Wheatstone Bridge circuit, this gage is easily adaptable to most data acquisition systems.
Each sensor is individually calibrated with high temperature resistant lead wire attached and is provided with QC documentation and Calibration plots.
| MODEL |
AST350-8 |
AST350-6 |
VAST350 |
| Gage Length (Horizontal) |
8 in. (203 mm) |
6 in. (152 mm) |
N/A |
| Plate Separation (Vertical) |
N/A |
N/A |
1-3 (25-76 mm) |
| Circuit |
Full Wheatstone bridge with 4 active 350Ω strain gages |
|
|
| Excitation Voltage |
+1.0 to +10.0 Vdc |
| Output |
mV level, ratiometric to Excitation Voltage |
| 5,000 µε |
| Temperature Rating |
-50° to +300 °F (-45° to 150 °C) |