Piezoelectric Sensors

Piezoelectric RoadTrax BL

The Roadtrax BLSensor (named for what it looks like - a Brass Linguini®) can be installed directly into a slot in the road for permanent applications, or taped down for portable applications. These sensors are unencapsulated, conforming to the road profile giving a clean easy-to-read signal that translates into accurate vehicle count, speed and WIM data. The BL sensor is available both as a Class 1 sensor for the highest level of uniformity needed for WIM applications, and as a Class 2 sensor which is more cost effective for counting, classifying, high speed toll booths, and speed detection. Both the Class 1 and the Class 2 sensors are available in a variety of different lengths from 6 to 13 feet, with standard cable lengths of 100 feet or more (Metric from 2 - 5.5 meters, cable lengths from 35 - 100 meters). These sensors are directly compatible with all counters and WIM systems that have piezoelectric input.

  • The BL sensors' unique flat design results in a more accurate count by rejecting road noise and reducing "ghost axles"
  • Constructed with proven components and assembled in a unique way to improve longevity and uniformity
  • Easy installation with relatively small road cut and flexible sensor to conform to any road profile
  • Encapsulated sensor available for good adhesion to the epoxy and protection of the sensor
  • Available in a variety of sensor lengths and passive cable lengths

Piezoelectric in-road sensor installation

Piezoelectric Vibracoax

The piezoelectric sensor VIBRACOAX can be installed directly into a slot in the road for permanent applications (bare or encapsulated), or taped down (bare) for portable applications. VIBRACOAX sensors are available in two classes: Class 1 - very uniform in performance and very sensitive, making them ideal for WIM applications. Class 2 - more cost-effective, yet sensitive enough to be excellent for the axle-detection function in both WIM and AVC (automatic vehicle classification).

  • Specially designed for shallow installations in thin or reinforced pavements where deeper excavation is a problem
  • Steady output signal over the complete active zone
  • Permanently installed in shallow sawcut with small amount of grout

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