Noise Level Sensor

Noise Level Sensor Product Details：

The noise level sensor is a precision-designed, complex device developed for high-accuracy measurement of environmental noise levels. This sensor can monitor and record sound intensity in real-time, with a measurement range of 30–130 dB, meeting the needs of various environments and industrial scenarios. Its durable ABS plastic housing and high-precision capacitive microphone ensure long-term stable operation, making it ideal for professional applications requiring accurate noise data. The sensor supports RS485 output and MODBUS-RTU protocol, making it easy to integrate with various control systems, providing users with reliable noise monitoring solutions.  

This noise sensor complies with IEC 61672 Type 2 international standards, with a robust design suitable for long-term outdoor or industrial use. Its quick response simulates the human ear's auditory characteristics, making it easy to scientifically assess and control environmental noise. The sensor is widely used in urban environmental monitoring, industrial parks, transportation systems, construction sites, and other locations.

Noise Level Sensor Features  

- High Precision Measurement: Frequency weighting complies with IEC 61672 Type 2 standards, calibrated at 94 dB (31.5 Hz–8 kHz), ensuring accurate and reliable measurement results.

- Wide Measurement Range: Covers 30–130 dB, capturing everything from faint whispers to loud mechanical noises.

- Fast Response: Time response of 200 ms, simulating the human ear's response to real-time noise changes.

- Durable Design: ABS plastic housing, sturdy structure, and suitable for long-term use in harsh environments from -15°C to 50°C.

- Low Power Consumption: DC 12V power supply, consuming only about 20 mW, energy-efficient for long-term operation and solar-powered applications.

- Flexible Integration: Supports RS485 output and MODBUS-RTU protocol for seamless integration with PLCs, data recorders, and other control systems.

- Professional Calibration: Compatible with B&K (Bruel & Kjaer) multifunction sound calibrators (model 4226) for measurement accuracy.

- Compact Microphone: Equipped with a 0.5-inch capacitive microphone, with a maximum output impedance of 200 ohms, high sensitivity, and stable performance.

Noise Level Sensor Technical Specifications  

Noise Level Sensor Applications and Value

Applications  

1. Environmental Noise Monitoring:  

   - Scenario: Urban residential areas, parks, public places, hospitals, schools  

   - Function: Monitors environmental noise levels to ensure compliance with residential noise standards (daytime ≤50 dB, nighttime ≤45 dB), protecting residents' health.  

   - Value: Provides real-time data, aiding local governments in formulating noise control measures, improving residents' quality of life.   

2. Industrial Noise Control:  

   - Scenario: Factories, workshops, machinery operation sites  

   - Function: Monitors noise generated by equipment operations, assessing its impact on workers' hearing and work efficiency.  

   - Value: Optimizes equipment maintenance plans based on noise data, reduces noise pollution, minimizes injury risks, and boosts production efficiency.   

3. Construction Site Management:  

   - Scenario: Monitors noise levels at large construction sites to ensure compliance with environmental regulations, assisting environmental departments in enforcement.  

   - Function: Real-time monitoring of construction noise to ensure compliance with environmental laws, preventing disturbances to surrounding areas.  

   - Value: Helps construction units adjust working hours and equipment use, minimizing noise disturbance to nearby communities and meeting environmental requirements.   

4. Traffic Noise Monitoring:  

   - Scenario: Highways, railways, airports  

   - Function: Evaluates the noise produced by traffic (vehicles, trains, airplanes) and its impact on the surrounding environment.  

   - Value: Provides data for transportation planning and noise barrier design, optimizing traffic management and reducing noise pollution.   

5. Smart Buildings and Smart Cities:  

   - Scenario: Smart buildings, urban environmental monitoring networks  

   - Function: Integrated into intelligent systems to monitor noise levels inside buildings or across urban areas.  

   - Value: Provides data for smart city planning, promoting noise pollution control, and enhancing the livability of urban environments.  

Function and Value  

- Health Protection: Prolonged exposure to high-intensity noise can lead to hearing damage, psychological stress, and health issues. This sensor helps identify and control harmful noise, safeguarding human health.  

- Regulatory Compliance: Provides precise data in line with IEC 61672 Type 2 standards, ensuring businesses, construction sites, and public facilities meet noise emission regulations, avoiding fines and legal risks.  

- Improved Work Efficiency: Noise interferes with communication, lowers productivity, and may cause accidents. Real-time monitoring and data analysis optimize work environments, improving productivity and safety.  

- Environmental Management: Provides critical data for urban planning, industrial management, and environmental protection, promoting scientific noise pollution control and management.  

- Long-Term Reliability: The durable ABS housing and low-power design ensure long-term stable operation in harsh environments, reducing maintenance costs and supporting unmanned, remote monitoring.  

- Data Integration: RS485 and MODBUS-RTU protocols allow seamless integration with a variety of data acquisition systems, suitable for complex IoT and industrial automation scenarios.   

Why Choose Our Noise Level Sensor?  

Our noise level sensor combines high precision, fast response, and durable design to meet diverse needs, from environmental monitoring to industrial applications. Its IEC 61672 Type 2 standard-compliant performance, wide measurement range, and flexible RS485 output make it an ideal choice for professional noise monitoring. Whether protecting community residents from noise pollution, optimizing industrial production environments, or supporting smart city development, this sensor provides reliable data to drive healthier, more efficient, and more sustainable environmental management.   

Contact Niubol now for more information about our noise level sensors and customized noise monitoring solutions!

Noise Sensor Data Sheet

NBL-W-NS Noise-Sensor-Instruction-Manual.pdf