Enviko CET-8311 Piezo Traffic Sensor

 Enviko CET-8311 Piezo Traffic Sensor


The CET-8311 Piezo Traffic Sensor is a high-performance device designed for collecting traffic data. Whether installed permanently or temporarily, the CET-8311 can be flexibly installed on or below the road, providing accurate traffic information. Its unique structure and flat design allow it to conform to the road profile, reduce road noise, and improve the accuracy and reliability of data collection.

Two types for CET-8311 Piezo Traffic Sensor:

Class I (Weigh In Motion, WIM): Used for dynamic weighing applications, with an output consistency of ±7%, suitable for applications requiring high-precision weight data. 

Class II (Classification): Used for vehicle counting, classification, and speed detection, with an output consistency of ±20%. It is more economical and suitable for high-traffic management applications.

Main Features of CET-8311 Piezo Traffic Sensor

1.         Fully enclosed, no electronic components, material generates electricity under impact.

2.         Excellent performance in dynamic measurements, detecting single-axle information in real time, with accurate separation of continuous axle loads.

3.         Simple installation with minimal road damage, requiring a trench of 20×30 mm.

4.         Integrated with the road, unaffected by rain, snow, ice, or frost, with no maintenance required.

5.         Installed flush with the road surface, ensuring smooth passage for vehicles.

6.         Parallel processing with the sensor and processing module, ensuring fast data handling.

7.         The sensor is embedded into the road and ground down to remain flush with the road surface. The sensor processing module operates in parallel, allowing for fast data processing without missed or false detections. The sensor accurately captures electrical signals over long distances.

8.         Effectively isolates horizontal pressure, ensuring accurate vertical force detection.

9.         Long life, no external protection needed, capable of withstanding over 40 million axle passes.

10.     Suitable for wide lanes.

11.     Adapts to road surface changes without affecting data analysis.

The Main Parameters of CET-8311 Piezo Traffic Sensor

Output Uniformity 

±20% for Class II (Classification)

±7% for Class I (Weigh in Motion)

Operating Temperature Range

-40℃～85℃；

Temperature Sensitivity

0.2%/℃；

Typical Output Level

At 25ºC, using 250mm*6.3mm rubber head, pressing 500KG force, peak output 11-13V

Piezoelectric Coefficient

22 pC/N

Center Core

16 gauge, flat, braided, silver plated copper wire

Piezoelectric Material

Spiral-wrapped PVDF Piezoelectric film

Outer Sheath

0.4mm thick brass

Passive Signal Cable

RG58A/U, using high-density polyethylene sheath, can be directly buried; outer diameter 4mm, rated capacitance 132pF/m 

Product Life

>40 to 100 million axle times

Capacitance

3.3m,40m cable,18.5nF

Insulation Resistance

DC 500V >2,000MΩ

Packaging

Sensors are packaged 2 per box (520×520×145mm paper box)

Installation Brackets 

Includes brackets. One bracket per 150mm

Sensor Dimensions

1.6mm*6.3mm, ±1.5%

Installation Slot Size

20mm×30mm

 

Enviko Technology Co.,Ltd

E-mail: info@enviko-tech.com

https://www.envikotech.com

Chengdu Office: No. 2004, Unit 1, Building 2, No. 158, Tianfu 4th Street, Hi-tech Zone, Chengdu

Hong Kong Office: 8F, Cheung Wang Building, 251 San Wui Street, Hong Kong

 




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