MQ 125TR: Product Overview and Specifications

Introduction

The MQ 125TR is a versatile sensor belonging to the category of gas sensors. It is widely used for detecting various gases in different environments. This entry provides an overview of the MQ 125TR, including its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

• Category: Gas Sensor
• Use: Detection of Various Gases
• Characteristics: High Sensitivity, Fast Response Time
• Package: TO-5 Metal Can
• Essence: Semiconductor Gas Sensor
• Packaging/Quantity: Individual Unit Packaging

Specifications

• Model: MQ 125TR
• Operating Voltage: 5V DC
• Power Consumption: Less than 150mW
• Sensitivity: Adjustable via Potentiometer
• Response Time: Less than 10 seconds
• Recovery Time: Less than 30 seconds
• Heater Resistance: 33Ω ± 5%
• Heater Power Consumption: 900mW
• Load Resistance: 10kΩ
• Heating Current: Less than 180mA

Detailed Pin Configuration

1. A0: Analog Output
2. D0: Digital Output
3. GND: Ground
4. VCC: 5V Power Supply

Functional Features

• High Sensitivity: Capable of detecting low concentrations of gases.
• Adjustable Sensitivity: The sensitivity can be fine-tuned using the onboard potentiometer.
• Digital and Analog Outputs: Provides both digital and analog outputs for flexibility in integration with different systems.
• Fast Response Time: Rapid detection and response to changes in gas concentration.

Advantages and Disadvantages

Advantages

• High sensitivity to a wide range of gases.
• Fast response time for timely detection.
• Adjustable sensitivity for customization.

Disadvantages

• Susceptible to environmental interference.
• Regular calibration may be required for optimal performance.

Working Principles

The MQ 125TR operates based on the principle of semiconductor gas sensing. When the target gas comes into contact with the sensor's surface, it causes a change in the sensor's conductivity, which is then converted into an electrical signal for detection and analysis.

Detailed Application Field Plans

The MQ 125TR finds extensive use in various applications, including: 1. Industrial Gas Monitoring Systems 2. Environmental Monitoring Equipment 3. Safety and Security Systems 4. Air Quality Monitoring Devices

Detailed and Complete Alternative Models

1. MQ-2: General purpose gas sensor with similar characteristics.
2. MQ-7: Specialized for carbon monoxide detection.
3. MQ-135: Designed for air quality monitoring.

In conclusion, the MQ 125TR gas sensor offers high sensitivity, fast response time, and adjustable sensitivity, making it suitable for diverse gas detection applications. Its working principle, detailed application field plans, and alternative models provide a comprehensive understanding of its capabilities and potential alternatives.

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