Polwax SL50

Features:

✔ Easy to Install and suitable for Wall Mounting

✔ High Accuracy and Stability

✔ Wide Measuring Range

✔ High-sensitivity microphone

✔ Compact and Durable Design

✔ User-Friendly Configuration

The Polwax Sound Level Transmitter Model SL50 is an advanced noise monitoring device designed to measure and transmit real-time sound pressure levels (SPL) in decibels (dB) for industrial, environmental, and commercial applications. With its high-precision microphone and signal processing unit, the Decibel 50 ensures accurate and reliable noise measurements across a wide frequency range.
Equipped with multiple output interfaces including 4-20mA, 0- 10V, RS485 (Modbus RTU), and MQTT over Wi-Fi, the SL50 seamlessly integrates with industrial automation systems, environmental monitoring platforms, and smart city infrastructure. Its robust IP65- rated enclosure allows for deployment in both indoor and outdoor environments, making it suitable for factories, airports, traffic monitoring, hospitals, educational institutions, and more.

Description

Sound Level Transmitter
Atmos Series – SL50

Polwax SL50 from the Atmos Series is a rugged, high-accuracy sound level transmitter designed for real-time noise monitoring in industrial and environmental applications. It features a wide measurement range of 30–130 dB, high-sensitivity microphone, and multiple output options (4–20 mA, 0–10 V, RS485). Its IP65-rated enclosure makes it ideal for harsh outdoor conditions. Easy to install and integrate, NoiseTrans50 is perfect for smart city projects, factories, hospitals, and more.
Why Choose Polwax Sound Level Transmitter – Model NoiseTrans50?
When it comes to precise, real-time noise level monitoring, the Polwax NoiseTrans50 stands out as a reliable, industrial-grade
solution designed to meet the needs of a wide range of applications. Here’s why you should choose Polwax SL50 for your sound
Level monitoring requirements:
1. High-Precision Noise Measurement
Wide Measurement Range (30 dB – 130 dB): Accurately captures ambient noise levels in industrial, commercial, and
environmental settings.
High-Sensitivity Electret Condenser Microphone: Provides superior noise detection with ±1.5 dB accuracy, ensuring
compliance with regulatory standards.
2. Versatile Output & Connectivity Options
Multiple Industry-Standard Outputs:
1) 4-20mA & 0-10V for integration with existing industrial control systems.
2) Rs485 Modbus RTU for communication with SCADA, BMS, and PLCs.
Seamless Integration: Works with smart city monitoring systems, environmental agencies, hospitals, factories, and more

Technical Data

Technical Specifications

Measurement Range

30 dB to 130 dB

Accuracy

±1.5 dB

Resolution

0.1 dB

Response Time

≤30 seconds

Microphone Type

Precision Electret Condenser Microphone

Output Options

4-20mA, 0-10V, RS485 (Modbus RTU)

Power Supply

12V-24V 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), 4-20mA, 0-5V, 0-10V

Mounting Options

Wall mount, Pole mount

Communication Protocols

MODBUS RTU

Housing Material

Industrial-grade ABS

Process Connection

High-strength, dustproof, waterproof

APPLICATIONS

Smart City Noise Pollution Monitoring
The Polwax SL50 was deployed across multiple high-traffic areas in the city. The devices were connected via MQTT over Wi-Fi, enabling real-time monitoring through a centralized dashboard.

Industrial Noise Monitoring
The SL50 was installed in high-noise areas. The 4-20mA output was integrated into the factory’s PLC system, enabling automated safety measures such as triggering alarms and activating noise reduction.

Hospital Noise Level Management
Polwax SL50 units were installed across ICU, corridors, and waiting areas to monitor noise levels. RS485 Modbus integration allowed real-time tracking through the hospital’s building management system.

Downloads

Product Brochures
➤ Technical-Datasheet-Polwax SL50