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products details

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WIM Sensor
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CET8311 Piezo Traffic Sensor for Weigh In Motion and Bridge Health Monitoring

CET8311 Piezo Traffic Sensor for Weigh In Motion and Bridge Health Monitoring

Brand Name: Enviko
Model Number: CET8311
Payment Terms: T/T
Detail Information
Place of Origin:
China
Packaging Details:
Package dimensions: 54×54×15 cm, 4 sets/box
Highlight:

CET8311 Piezoelectric Traffic Sensor

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Vehicle Speed WIM Sensor

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Piezoelectric Traffic Sensor WIM

Product Description

CET8311 Piezo Traffic Sensor

CET8311 Piezo Traffic Sensor for Weigh In Motion and Bridge Health Monitoring 0

The CET8311 Piezo Traffic Sensor  is an advanced sensor leveraging the piezoelectric effect to generate electrical signals by detecting pressure changes from vehicles. It enables precise monitoring of axle count, vehicle speed, classification, and dynamic weighing. With features such as high sensitivity, durability, cost-effectiveness, and easy installation, it is widely used in highway and urban traffic management, providing critical data support for intelligent transportation systems.

CET8311 Piezo Traffic Sensor for Weigh In Motion and Bridge Health Monitoring 1

CET8311 Piezo Traffic Sensor for Weigh In Motion and Bridge Health Monitoring 2

CET8311 Piezo Traffic Sensor for Weigh In Motion and Bridge Health Monitoring 3

CET8311 Piezo Traffic Sensor for Weigh In Motion and Bridge Health Monitoring 4

CET8311 Piezo Traffic Sensor for Weigh In Motion and Bridge Health Monitoring 5 

Working Principle

The sensor uses the longitudinal piezoelectric effect of polymer materials to generate an electric charge when impacted. It converts the vehicle tire’s weight into proportional electrical signals, enabling the detection of wheel load, axle load, and total vehicle weight.


Two types for CET8311 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.


The Main Parameters of CET8311 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

2 or 4 pcs per box (540×540×145mm paper box)

Installation Brackets 

Includes brackets. One bracket per 150mm

Sensor Dimensions

1.6mm*6.3mm, ±1.5%

Installation Slot Size

20mm×25mm