Advanced Sound Level Monitoring for Industrial & Environmental Applications
The POLWAX Atmos Series SL50 is a high-precision sound level transmitter designed for real-time monitoring of sound pressure levels from 30 dB to 120 dB. With a precision electret condenser microphone, ±1.5 dB accuracy, multiple industrial output options and IP65 protection, SL50 provides reliable noise monitoring for industrial, environmental, commercial and smart infrastructure applications.
Precision Sound Level Measurement for Industrial & Environmental Monitoring
The POLWAX Atmos Series SL50 Sound Level Transmitter is designed for continuous and reliable measurement of sound pressure levels in real-time. It provides a wide 30–120 dB measurement range with ±1.5 dB accuracy and 0.1 dB resolution.
The SL50 uses a precision electret condenser microphone and advanced signal processing to provide dependable sound-level measurements across a wide 20 Hz–20 kHz frequency range.
Multiple output interfaces including 4–20 mA, 0–5 V, 0–10 V and RS485 Modbus RTU allow integration with PLC, SCADA, BMS and industrial monitoring systems.
Its industrial-grade ABS housing with IP65 protection supports demanding indoor and outdoor installations, with wall and pole mounting options for flexible deployment.
SL50 Technical Specifications
Technical specifications for the POLWAX Atmos Series SL50 Sound Level Transmitter.
| Specification | Atmos Series – SL50 |
|---|---|
| Measurement Range | 30 dB to 120 dB |
| Accuracy | ±1.5 dB |
| Resolution | 0.1 dB |
| Response Time | ≤30 seconds |
| Microphone Type | Precision Electret Condenser Microphone |
| Output Options | 4–20 mA, 0–10 V, RS485 (Modbus RTU) |
| Power Supply | 12–24 V DC |
| Frequency Range | 20 Hz – 20 kHz |
| Operating Temperature | -10°C to 60°C |
| Storage Temperature | -20°C to 80°C |
| Humidity Range | 0–95% RH (non-condensing) |
| Protection Rating | IP65 – water-resistant and dustproof |
| Output Signals | RS485 (Modbus RTU), 4–20 mA, 0–5 V, 0–10 V |
| Mounting Options | Wall Mount / Pole Mount |
| Communication Protocol | MODBUS RTU |
| Housing Material | Industrial-grade ABS |
| Process Connection | High-strength, dustproof and waterproof |
Built for Accurate & Reliable Noise Monitoring
The SL50 combines high-precision sound measurement, flexible connectivity and rugged industrial construction for professional noise monitoring applications.
High Accuracy & Stability
The SL50 provides precise and stable sound-level measurement with ±1.5 dB accuracy using a high-sensitivity electret condenser microphone.
Wide Measuring Range
The 30–120 dB measurement range allows monitoring of both relatively quiet environments and high-noise industrial areas.
High-Sensitivity Microphone
A precision electret condenser microphone provides reliable sound detection across the 20 Hz–20 kHz frequency range.
Multiple Output Signals
Supports RS485 Modbus RTU, 4–20 mA, 0–5 V and 0–10 V outputs for flexible system integration.
Rugged IP65 Design
The industrial-grade enclosure provides water-resistant and dustproof protection for demanding monitoring environments.
Flexible Installation
Wall and pole mounting options allow convenient installation across industrial, commercial and environmental monitoring locations.
RS485 Modbus Communication
Digital RS485 communication enables integration with PLC, SCADA, BMS and other Modbus-compatible monitoring systems.
User-Friendly Configuration
The SL50 can be configured through PC-based software or Modbus registers for practical system setup and commissioning.
Compact & Durable Design
The compact industrial construction provides dependable performance for continuous professional noise monitoring.
Sound Level Monitoring Across Multiple Industries
The SL50 provides continuous sound pressure level monitoring for industrial, environmental, commercial, healthcare and smart-city applications.
Smart City Noise Pollution Monitoring
Monitor noise pollution across high-traffic areas and connect multiple SL50 devices to centralized monitoring platforms for real-time analysis.
Industrial Noise Monitoring
Monitor high-noise production areas and integrate the 4–20 mA output with factory PLC systems for automated safety monitoring.
Hospital Noise Level Management
Monitor noise levels across ICU areas, corridors, patient recovery areas and waiting zones for improved environmental management.
Traffic Noise Monitoring
Measure sound levels generated by traffic, transportation zones and urban infrastructure for environmental noise assessment.
Factories & Manufacturing
Continuously monitor production-area noise levels to support workplace safety, noise control and environmental monitoring.
Airports & Transportation
Support continuous noise-level monitoring in transportation environments where sound exposure and environmental noise need to be assessed.
Educational Institutions
Monitor noise levels across schools, colleges and other educational environments to support quieter and controlled spaces.
Commercial Buildings
Monitor sound levels in offices, commercial spaces and occupied buildings for facility and environmental management.
Environmental Monitoring
Collect continuous noise-level data for environmental assessment, regulatory monitoring and noise-control initiatives.
Flexible Connectivity for Noise Monitoring Systems
The POLWAX SL50 is designed for straightforward integration with industrial automation, environmental monitoring and building management systems.
- RS485 communication with Modbus RTU protocol
- 4–20 mA analog output
- 0–5 V voltage output
- 0–10 V voltage output
- PLC integration
- SCADA system integration
- BMS integration
- Environmental monitoring platforms
- Smart-city monitoring infrastructure
Designed for Seamless Industrial Integration
Choose the output configuration that best matches your noise monitoring, automation or environmental monitoring system.
SL50 Product Resources
Access technical documentation and product resources for the POLWAX Atmos Series SL50 Sound Level Transmitter.
Reliable Sound Level Measurement for Professional Applications
The POLWAX Atmos Series SL50 combines high-precision sound measurement, flexible output configurations, rugged IP65 construction and industrial communication capabilities in one professional noise monitoring transmitter.
- 30–120 dB measurement range
- ±1.5 dB measurement accuracy
- 0.1 dB resolution
- Precision electret condenser microphone
- 20 Hz–20 kHz frequency range
- RS485 Modbus RTU communication
- 4–20 mA, 0–5 V and 0–10 V outputs
- IP65 protection
- Wall and pole mounting
- Industrial-grade ABS housing
- User-friendly configuration
SL50 Sound Level Transmitter FAQs
What does the SL50 measure?
The SL50 measures real-time sound pressure levels (SPL) in decibels (dB) for industrial, environmental and commercial monitoring applications.
What is the measurement range of the SL50?
The SL50 has a sound-level measurement range of 30 dB to 120 dB.
What is the accuracy of the SL50?
The specified measurement accuracy is ±1.5 dB.
What is the resolution?
The SL50 provides a resolution of 0.1 dB.
Which output signals are available?
The SL50 supports RS485 Modbus RTU, 4–20 mA, 0–5 V and 0–10 V output signals.
Can the SL50 be connected to a PLC or SCADA system?
Yes. The RS485 Modbus RTU interface and analog outputs allow integration with PLC, SCADA, BMS and other industrial monitoring systems.
What is the frequency range?
The SL50 supports a frequency range of 20 Hz to 20 kHz.
Is the SL50 suitable for outdoor applications?
Yes. The SL50 features an IP65-rated enclosure designed for water-resistant and dustproof protection in demanding environments.
What mounting options are available?
The SL50 supports both wall mounting and pole mounting.
Where can the SL50 be used?
Typical applications include smart-city noise monitoring, industrial noise monitoring, hospitals, traffic monitoring, factories, educational institutions and environmental monitoring.
Monitor Noise Levels with Precision
The POLWAX Atmos Series SL50 delivers accurate, real-time sound pressure level monitoring for industrial facilities, smart cities, traffic management, hospitals, educational institutions and environmental applications. With a 30–120 dB range, ±1.5 dB accuracy, IP65 protection and flexible industrial communication options, SL50 is designed for reliable professional noise monitoring.