AST350 & VAST350 Asphalt Strain Transducers

AST350 & VAST350 Asphalt Strain Transducers

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.

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    High Temp Instrumentation Cable - 2 shielded twisted pair (24 AWG) with drain wire, 0.125" diameter, PTFE Jacket and wire coating.

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    Instrumentation Cable - 2 shielded twisted pair (22 AWG) with drain wire, 0.187" diameter, red PVC jacket.

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Specifications
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SPECIFICATIONS

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
STRAIN RANGE  5,000 µε
TEMPERATURE RATING1 -50° to +300 °F (-45° to 150 °C)


1
Temperature limit based on instrumentation cable operating temperatures, call BDI for wide temperature range cable options.

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