Stufin
Home Quick Cart Profile

MQ131 Ozone Gas Detection Module For ozone gas (O3) Detector Module

MQ131 Ozone Gas Detection Module For ozone gas (O3) Detector Module MQ131 Ozone Gas Detection Module For ozone gas (O3) Detector Module
Buy Now on Stufin

Component Description

MQ131 Ozone Gas Detection Module

Overview

The MQ131 Ozone Gas Detection Module is a highly sensitive and reliable gas sensor module designed to detect the presence of ozone gas (O3) in the air. This module is widely used in various applications, including air quality monitoring, industrial process control, and environmental monitoring.

Functionality

The MQ131 Ozone Gas Detection Module detects ozone gas concentrations in the air and provides an analog output signal that is proportional to the gas concentration. The module is based on a metal oxide semiconductor (MOS) sensor, which is highly sensitive to ozone gas. When ozone gas molecules come into contact with the sensor, they react with the metal oxide, causing a change in the sensor's electrical resistance. This change in resistance is converted into an analog output signal, which can be measured and interpreted by a microcontroller or other electronic device.

Key Features

  • High Sensitivity: The MQ131 module has a high sensitivity to ozone gas, with a detection range of 0.01-1.0 ppm (parts per million).
  • High Accuracy: The module provides a high degree of accuracy, with an error margin of 10% over the entire detection range.
  • Low Power Consumption: The module has a low power consumption of <20mA, making it suitable for battery-powered devices.
  • Simple Analog Output: The module provides a simple analog output signal, which can be easily interfaced with microcontrollers, Arduino, or other electronic devices.
  • Compact Size: The module has a compact size of 23x17mm, making it suitable for use in compact devices and systems.
  • Operating Temperature Range: The module operates over a wide temperature range of -10C to 50C, making it suitable for use in various environments.
  • Operating Humidity Range: The module operates over a humidity range of 20% to 80% RH, making it suitable for use in various environments.
  • Long Lifespan: The module has a long lifespan of up to 5 years, making it a reliable choice for long-term monitoring applications.
  • Low Cost: The module is a cost-effective solution for ozone gas detection, making it an attractive option for various applications.

Applications

  • Air Quality Monitoring: The MQ131 module is suitable for use in air quality monitoring systems, where it can detect ozone gas concentrations in real-time.
  • Industrial Process Control: The module can be used to monitor ozone gas concentrations in industrial processes, such as wastewater treatment and chemical processing.
  • Environmental Monitoring: The module can be used to monitor ozone gas concentrations in environmental monitoring systems, such as air pollution monitoring networks.
  • HVAC Systems: The module can be used to monitor ozone gas concentrations in heating, ventilation, and air conditioning (HVAC) systems.

Technical Specifications

Operating Voltage

5V

Operating Current

<20mA

Detection Range

0.01-1.0 ppm

Accuracy

10%

Sensitivity

High

Output Signal

Analog

Response Time

<10 seconds

Operating Temperature Range

-10C to 50C

Operating Humidity Range

20% to 80% RH

Dimensions

23x17mm

Pinouts

VCC

5V Operating Voltage

GND

Ground

OUT

Analog Output Signal

Notes

The MQ131 module should be used in a well-ventilated area to prevent damage from exposure to high concentrations of ozone gas.

The module should be calibrated regularly to ensure accurate readings.

The module is sensitive to temperature and humidity, and its performance may be affected by extreme environmental conditions.

Pin Configuration

  • MQ131 Ozone Gas Detection Module Documentation
  • Component Overview
  • The MQ131 Ozone Gas Detection Module is a highly sensitive and selective ozone gas detector module. It is designed to detect ozone (O3) gas concentrations in the air, making it ideal for various applications such as air quality monitoring, industrial process control, and environmental monitoring.
  • Pin Description
  • The MQ131 Ozone Gas Detection Module has 6 pins, which are described below:
  • 1. VCC (Power Supply Pin)
  • Pin Type: Power Input
  • Description: This pin is used to supply power to the module. The recommended operating voltage is between 4.5V and 5.5V.
  • Connection: Connect to a power source (e.g., a battery or a voltage regulator output) that provides a stable voltage within the specified range.
  • 2. GND (Ground Pin)
  • Pin Type: Ground
  • Description: This pin is the ground reference point for the module.
  • Connection: Connect to a ground point on your circuit board or a negative terminal of a power source.
  • 3. OUT (Analog Output Pin)
  • Pin Type: Analog Output
  • Description: This pin outputs an analog voltage signal that corresponds to the detected ozone gas concentration. The output voltage ranges from 0V to 5V, with higher voltages indicating higher ozone concentrations.
  • Connection: Connect to an analog-to-digital converter (ADC) or a microcontroller's analog input pin to read the output signal.
  • 4. DOUT (Digital Output Pin)
  • Pin Type: Digital Output
  • Description: This pin provides a digital output signal that indicates when the ozone gas concentration exceeds a certain threshold (typically 10ppm). The output is either 0V (low) or 5V (high).
  • Connection: Connect to a digital input pin on a microcontroller or a logic circuit to detect the digital output signal.
  • 5. HEAT (Heater Pin)
  • Pin Type: Power Input
  • Description: This pin supplies power to the internal heater that helps maintain the sensor's optimal operating temperature.
  • Connection: Connect to a power source (e.g., a battery or a voltage regulator output) that provides a stable voltage within the specified range. Typically, the same power source used for VCC can be used for the HEAT pin.
  • 6. NC (No Connection Pin)
  • Pin Type: No Connection
  • Description: This pin is not connected internally and should be left unconnected.
  • Connection: None
  • Connection Structure
  • To connect the MQ131 Ozone Gas Detection Module, follow these steps:
  • 1. Connect VCC to a power source (e.g., a 5V battery or a voltage regulator output).
  • 2. Connect GND to a ground point on your circuit board or a negative terminal of a power source.
  • 3. Connect OUT to an analog-to-digital converter (ADC) or a microcontroller's analog input pin.
  • 4. Connect DOUT to a digital input pin on a microcontroller or a logic circuit.
  • 5. Connect HEAT to the same power source used for VCC.
  • 6. Leave NC unconnected.
  • Important Notes
  • When handling the module, avoid touching the sensor component to prevent contamination and ensure accurate readings.
  • The module requires a warm-up period of about 20-30 minutes to stabilize the sensor and achieve accurate readings.
  • The module should be operated in a well-ventilated area to prevent ozone accumulation and ensure safe operation.
  • Refer to the manufacturer's datasheet for specific operating conditions, calibration, and troubleshooting guidelines.

Code Examples

MQ131 Ozone Gas Detection Module Documentation
Overview
The MQ131 Ozone Gas Detection Module is a highly sensitive and accurate ozone gas (O3) detector module. It is designed to detect ozone gas concentrations in the air, making it suitable for various applications such as air quality monitoring, industrial process control, and environmental monitoring. The module is based on the MQ131 ozone gas sensor, which provides a high sensitivity and fast response time.
Features
High sensitivity and accuracy
 Fast response time
 Low power consumption
 Simple to use and integrate
 Analog output signal
 Operating temperature range: -20C to 50C
 Operating humidity range: 20% to 90% RH
Pinouts
The MQ131 Ozone Gas Detection Module has the following pinouts:
VCC: Power supply (typically 5V)
 GND: Ground
 OUT: Analog output signal
Code Examples
### Example 1: Basic Ozone Gas Detection using Arduino
This example demonstrates how to use the MQ131 Ozone Gas Detection Module with an Arduino board to detect ozone gas concentrations.
```c++
const int ozonePin = A0;  // Analog input pin for MQ131 output
int ozoneValue = 0;
float ozoneConcentration = 0.0;
void setup() {
  Serial.begin(9600);
}
void loop() {
  ozoneValue = analogRead(ozonePin);
  ozoneConcentration = (ozoneValue  5.0 / 1023.0);  // Convert analog value to voltage
  ozoneConcentration = (ozoneConcentration - 1.2) / 0.08;  // Convert voltage to ozone concentration (ppm)
Serial.print("Ozone Concentration: ");
  Serial.print(ozoneConcentration);
  Serial.println(" ppm");
delay(1000);
}
```
### Example 2: Ozone Gas Detection with Alarms using Raspberry Pi (Python)
This example demonstrates how to use the MQ131 Ozone Gas Detection Module with a Raspberry Pi to detect ozone gas concentrations and trigger an alarm when the concentration exceeds a certain threshold.
```python
import RPi.GPIO as GPIO
import time
# Set up GPIO pins
GPIO.setmode(GPIO.BCM)
GPIO.setup(17, GPIO.IN, pull_up_down=GPIO.PUD_UP)  # Alarm pin
ozonePin = 18  # Analog input pin for MQ131 output
while True:
  ozoneValue = GPIO.input(ozonePin)
  ozoneConcentration = (ozoneValue  5.0 / 1023.0)  # Convert analog value to voltage
  ozoneConcentration = (ozoneConcentration - 1.2) / 0.08  # Convert voltage to ozone concentration (ppm)
if ozoneConcentration > 0.1:  # Alarm threshold (adjust to your needs)
    GPIO.output(17, GPIO.LOW)
    print("Ozone concentration exceeded threshold! Alarm triggered!")
  else:
    GPIO.output(17, GPIO.HIGH)
    print("Ozone concentration within safe limits.")
time.sleep(1)
```
### Example 3: Wireless Ozone Gas Detection using ESP32 and Wi-Fi
This example demonstrates how to use the MQ131 Ozone Gas Detection Module with an ESP32 board to detect ozone gas concentrations and send the data to a remote server using Wi-Fi.
```c++
#include <WiFi.h>
const char ssid = "your_wifi_ssid";
const char password = "your_wifi_password";
const char serverUrl = "http://example.com/ozonedata";
WiFiClient client;
void setup() {
  Serial.begin(115200);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");
}
void loop() {
  int ozoneValue = analogRead(32);  // Analog input pin for MQ131 output
  float ozoneConcentration = (ozoneValue  5.0 / 1023.0);  // Convert analog value to voltage
  ozoneConcentration = (ozoneConcentration - 1.2) / 0.08;  // Convert voltage to ozone concentration (ppm)
if (client.connect(serverUrl, 80)) {
    client.println("POST /ozonedata HTTP/1.1");
    client.println("Host: example.com");
    client.println("Content-Type: application/x-www-form-urlencoded");
    client.println("Content-Length: 20");
    client.println();
    client.print("ozone_concentration=");
    client.print(ozoneConcentration);
    client.println();
    client.stop();
  } else {
    Serial.println("Connection failed");
  }
delay(60000);  // Send data every 1 minute
}
```
Notes
The above examples are for demonstration purposes only and may require adjustments to the code and circuitry to suit your specific application.
 It is recommended to calibrate the MQ131 Ozone Gas Detection Module before use to ensure accurate readings.
 Always follow safety precautions when working with electronic components and ozone gas.