Gas Sensors

Product Details:

_{The Hi-Link URA2405LD-10WR3 is a compact, isolated DC-DC converter module designed to step down a wide input voltage range to a stable 5V output. This module is part of Hi-Link's URA series, known for its efficiency and reliability in various applications.}

Product Details:

The MQ2 Gas Sensor Module is a highly sensitive gas detection device designed to sense a variety of gases such as LPG, methane, butane, hydrogen, alcohol, propane, smoke, and carbon monoxide. It is ideal for gas leakage detection systems, air quality monitors, and safety alarms in industrial and home environments.

Product Details:

The Hi-Link URB2409S-10WR3 is a high-performance, isolated DC-DC converter module designed to step down a wide input voltage range to a stable 9V output, delivering up to 10W of power. This module is ideal for applications requiring electrical isolation and regulated power conversion.

Product Details:

 

1. The MQ-5 Gas Sensor is a versatile and cost-effective sensor designed to detect a variety of combustible gases, including LPG (Liquefied Petroleum Gas), natural gas, coal gas, methane, propane, and iso-butane. Utilizing a tin dioxide (SnO₂) sensing material, the sensor exhibits low conductivity in clean air, which increases in the presence of combustible gases, allowing for precise detection.

Product Details:

 

MG-811 Carbon Dioxide Sensor Module for detecting Metal Oxide Sensor Carbon Dioxide (CO2), which needs to heat the tank to the specified level. With power supply This creates heat vapor and separates the CO2 from the air in general.

This sensor module has an MG-811 on-board as the sensor component. There is an on-board signal conditioning circuit for amplifying output signal and an on-board heating circuit for heating the sensor. The MG-811 is highly sensitive to CO2 and less sensitive to alcohol and CO. It could be used in air quality control, ferment process, in-door air monitoring application. The output voltage of the module falls as the concentration of the CO2 increases.

 

Additional Information:

• Item Code: MG811

Product Details:

The MQ131 Gas Sensor Module is an air quality sensor designed to detect ozone (O₃) in the environment. It is part of the MQ series of gas sensors, which are widely used in various industrial, residential, and commercial applications for detecting different gases. The MQ131 is specifically designed to sense ozone, a gas commonly found in the atmosphere that can be harmful to human health when present in high concentrations.

Key Features:

1. Sensitivity to Ozone (O₃):

   • The MQ131 sensor is primarily sensitive to ozone gas. Ozone is a strong oxidizing agent that can be both beneficial and harmful depending on its concentration. While ozone in the upper atmosphere protects life on Earth by absorbing harmful ultraviolet radiation, ground-level ozone is considered a pollutant and can cause respiratory problems.

2. High Sensitivity and Accuracy:

   • The MQ131 sensor provides accurate measurements of ozone concentrations in the air, with the ability to detect even small amounts of the gas. This makes it ideal for monitoring indoor air quality or detecting ozone leaks in industrial settings.

3. Analog and Digital Output:

   • The MQ131 module typically provides both analog and digital outputs. The analog output is proportional to the gas concentration, while the digital output gives a simple HIGH or LOW signal depending on the threshold level set for ozone concentration.

4. Heater and Sensor Component:

   • Like other MQ sensors, the MQ131 consists of a heating element and a sensitive layer that reacts to the gas in the air. When ozone gas comes into contact with the sensitive layer, it causes a change in the sensor’s resistance, which is then measured to determine the concentration of ozone in the air.

5. Wide Detection Range:

   • The MQ131 sensor can detect ozone concentrations within a specific range, typically from 10 ppb (parts per billion) to 1 ppm (parts per million), which is useful for detecting both low and high concentrations of ozone in the air.

6. Low Power Consumption:

   • The MQ131 module operates with low power, making it suitable for battery-operated devices or remote monitoring applications. It draws minimal current during operation, which increases the longevity of portable or wireless devices that use this sensor.

7. Temperature and Humidity Compensation:

   • The sensor is designed to work well under various environmental conditions, though temperature and humidity can affect its performance. Proper calibration and compensating for environmental variables may be necessary for optimal performance.

8. Long Lifespan:

   • The MQ131 sensor has a long operational life when properly used. It is built to withstand continuous exposure to ozone and is suitable for long-term deployment in monitoring systems.

9. Easy Integration:

   • The MQ131 module is commonly used in applications involving microcontrollers such as Arduino, Raspberry Pi, or other IoT devices. It is easy to integrate into projects using analog-to-digital converters (ADC) for reading the sensor’s analog output or interfacing with microcontroller digital inputs.

Product Details:

The MQ136 Gas Sensor Module is a widely used sensor designed to detect ammonia (NH₃) in the air. This sensor is part of the MQ series of gas sensors, which are commonly utilized in various applications for detecting gases in the environment. The MQ136 sensor, in particular, is tailored to detect ammonia, making it useful in scenarios such as air quality monitoring, agriculture, industrial applications, and safety systems.

Key Features:

1. Gas Detection:

   • The MQ136 is primarily used for detecting ammonia (NH₃) gas, but it is also sensitive to other gases such as nitrogen dioxide (NO₂), carbon monoxide (CO), and hydrogen (H₂). However, its primary sensitivity is focused on ammonia.

2. Analog and Digital Output:

   • The module typically provides both analog and digital outputs. The analog output can be used to detect the concentration of ammonia gas in the environment, while the digital output provides a simple high/low signal, indicating whether the ammonia concentration exceeds a certain threshold.

3. Sensor Type:

   • The MQ136 sensor is based on a semiconductor sensing material, which changes its resistance in the presence of gases. As ammonia gas is absorbed, the resistance of the sensor changes, allowing it to detect varying gas concentrations.

4. Heater and Sensor Layer:

   • The sensor includes a heating element and a sensor layer coated with a material that reacts to ammonia gas. The heater ensures that the sensor operates at the optimal temperature, allowing it to detect gases with high sensitivity.

5. Warm-up Time:

   • Like other MQ sensors, the MQ136 requires a warm-up period (usually around 24-48 hours) to reach optimal sensitivity. This is due to the nature of the sensor's semiconductor heating element, which requires time to stabilize.

6. Sensitivity and Range:

   • The MQ136 sensor has a broad sensitivity range, with the ability to detect ammonia gas concentrations from a few parts per million (ppm) to higher concentrations (1000 ppm or more). This makes it suitable for both low and high-concentration gas detection.

7. Power Supply:

   • The MQ136 typically operates on a 5V DC power supply, making it compatible with various microcontrollers, such as Arduino, Raspberry Pi, and ESP32.

Product Details:

The MQ137 Gas Sensor Module is a high-sensitivity sensor designed to detect ammonia (NH3) gas. This sensor is widely used in various applications where ammonia levels need to be monitored, such as in agricultural settings, industrial environments, and environmental monitoring systems. It is part of the MQ series of gas sensors, which are known for their cost-effectiveness and reliability in detecting different gases.

Key Features:

1. Ammonia Detection:

   • The MQ137 sensor is specifically designed to detect ammonia (NH3) gas in the air. It can be used to monitor ammonia levels in environments such as farms, laboratories, and industrial areas, where ammonia is commonly present due to fertilizers, refrigeration systems, and other processes.

2. High Sensitivity and Wide Detection Range:

   • The MQ137 offers a wide detection range, from 10 ppm (parts per million) to 1000 ppm of ammonia gas, making it suitable for detecting both low and high concentrations of ammonia in the air.

3. Heater and Sensor:

   • The module includes a heating element and a sensitive layer that reacts to ammonia gas. The sensor’s resistance changes based on the concentration of ammonia, which is then processed by the circuit to produce a measurable output signal.

4. Analog and Digital Output:

   • The MQ137 sensor provides both analog and digital output signals. The analog output is a variable voltage corresponding to the concentration of ammonia, while the digital output is a binary signal that can be used for simple threshold detection (e.g., when ammonia levels exceed a certain limit).

5. Power Supply:

   • The MQ137 typically operates at 5V (DC), making it easy to integrate with common microcontrollers like Arduino, Raspberry Pi, and other development boards. The sensor may require a pre-heating time of several minutes for accurate readings, especially when first powered on.

6. Long Lifetime and Durability:

   • The MQ137 sensor is designed for long-term use, with a lifespan that can last several years when used under proper conditions. However, it is important to note that its sensitivity may decrease over time due to exposure to harsh conditions or contamination.

Applications:

• Environmental Monitoring: The MQ137 is commonly used in air quality monitoring systems to detect ammonia in industrial or agricultural settings where ammonia is commonly used in fertilizers, refrigeration, and other processes.

• Agriculture: It is used in farms or greenhouses to detect ammonia levels in the air, which can be harmful to plants and animals when present in high concentrations.

• Industrial Safety: The sensor is used in factories, chemical plants, and other industries where ammonia is present. It can help detect dangerous levels of ammonia gas, providing early warnings for ventilation or safety systems to mitigate risks.

• Home and Personal Use: In applications like smart home systems or air purifiers, the MQ137 can help monitor indoor air quality, especially in spaces where ammonia is used (such as kitchens or laundry rooms).

Wiring and Interfacing with Microcontrollers:

The MQ137 sensor can be interfaced with microcontrollers like Arduino or Raspberry Pi. Typically, it has four pins:

• VCC (5V for power)
• GND (Ground)
• DO (Digital output, which provides a high/low signal based on the threshold)
• AO (Analog output, providing a voltage level corresponding to ammonia concentration)

Product Details:

The MQ-7 Gas Sensor Module is a highly sensitive and reliable gas detection unit specifically designed to detect carbon monoxide (CO) in the air. Based on the MQ-7 sensor chip, this module is widely used in gas leakage detection systems, environmental monitoring, and safety applications

Product Details:

The MQ-135 Gas Sensor is an air quality sensor used to detect a wide range of gases including ammonia (NH₃), nitrogen oxides (NOₓ), alcohol, benzene, smoke, and carbon dioxide (CO₂). It is commonly used in air quality monitoring systems, indoor pollution detectors, and various environmental sensing projects.

Product Details:

 

1. The MQ-8 is a popular gas sensor used to detect methane (CH₄), which is commonly found in natural gas. It is part of the MQ series of sensors produced by Hanwei Electronics and is typically used in gas leakage detection systems, safety monitoring, and home automation projects. The MQ-8 sensor is especially useful for detecting the presence of methane in the air and is often used in applications such as home gas leak detectors, smart home systems, and industrial safety systems.

Product Details:

The MQ4 Gas Sensor is a sensor used to detect the presence of methane (CH4) in the air. It's part of the MQ family of gas sensors, which are commonly used for detecting gases in various applications like gas leak detection, air quality monitoring, and other IoT-based projects.