Vertical noise sensor

⊙ Overview: A noise transmitter consists of a power module, a transmission module, a data processing module, etc

⊙ Overview

The noise transmitter consists of a power module, a transmission module, a data processing module, etc. Compact and lightweight in appearance, easy to carry and connect, with a simple and convenient user interface.

⊙ Working principle

The transmitter is developed using advanced circuit module technology. The noise sensor is equipped with a sound sensitive capacitive polarizer microphone embedded in the sensor. Sound waves cause the polarizer film inside the microphone to vibrate, which is used to measure sound and output standard voltage signals for easy use. The sensor accessories include a wind ball, rain cover, housing, etc. The wind ball can reduce aerodynamic noise and also prevent dust, dirt, and raindrops. Typhoon signals can effectively reduce the impact of wind speed,. It can be widely used for measuring industrial noise in meteorology, dust generating construction sites, vehicles, ships, and the environment.

⊙ Functional Features

Small size, light weight, non embroidered steel shell independent packaging design, easy to embed into other equipment or chassis

High measurement accuracy, reliable performance, ensuring normal operation.

Strong anti-interference ability and long-distance sound pickup

Long service life

Fast response speed and high data transmission efficiency.

⊙ Technical parameters

Measurement parameter: Noise

Unit: DB

Measurement range: 30-130DB

Working environment: -40~85 ℃

Measurement accuracy: ± 1DB (in reference tone) 94db@1KHz ）

Resolution: 0.1DB

Power supply: DC12V-24V

□ Microphone: Capacitive microphone

Performance level: IEC 61672 type 2

Frequency range: 20Hz-12.5kHz

□ Protection level: IP65

Output signal: Analog 4-20mA RS485 voltage

□ Product material: The metal rod is made of stainless steel material

current mode 4～20mA Corresponding

30～130DB Accuracy: ± 1%

Voltage type 0.4～2V

Stable time: 1 second after power on;

Response time:<1 second;

□ Cable length: standard is 1.5m

current mode	4～20mA	correspond to 30～130DB	Accuracy: ± 1%
Voltage type	0.4～2V

⊙ Calculation formula

0.4-2V output signal:

Voltage type: Noise=(output voltage -0.4)/1.6 * 100+30

4-20mA output signal:

Current type: Noise=(output current -4)/16 * 100+30

The 485 output sensor uses the standard Modbus communication protocol

⊙ Definition of line color (current/voltage type)

line color	red	Blue/Yellow	black
definition	power supply	signal	negative