MQ-7B MQ-7 Carbon Monoxide Gas Sensor for Industrial Applications

1. Applications:

• Residential CO Safety Monitoring: Widely used in home CO detectors to monitor carbon monoxide leaks from gas stoves, water heaters, fireplaces, or faulty heating systems, protecting families from CO poisoning.
• Portable Personal Protection: Integrated into small, portable gas detectors for personal use—such as by maintenance workers, gas station staff, or indoor air quality inspectors—to detect CO in real time during on-site operations.
• Industrial Low-Concentration Detection: Applied in light industrial scenarios (e.g., small workshops, storage rooms with fuel-burning equipment) to monitor low CO concentrations (typically 20–1000 ppm) and trigger early warnings for minor leaks.
• Automotive Auxiliary Detection: Used in some vehicle-related systems (e.g., garage air quality monitors) to detect CO buildup from idling cars, preventing risks in enclosed or semi-enclosed parking spaces.

2. Features:

• Cost-Effective & Easy to Use: Low manufacturing cost compared to high-end industrial sensors; simple pin configuration (power, ground, signal) allows easy integration into Arduino, Raspberry Pi, or basic electronic circuits.
• Targeted Sensitivity to CO: Optimized for detecting carbon monoxide, with high sensitivity to low CO concentrations (20–1000 ppm, adjustable for higher ranges); minimal response to common interfering gases like methane or propane (with proper calibration).
• Wide Operating Voltage Range: Typically works with 5V DC power supply, compatible with most low-voltage electronic platforms, making it suitable for DIY projects or consumer electronics.
• Rapid Warm-Up & Response: Requires a short warm-up time (usually 2–5 minutes) to stabilize; T90 response time is generally < 10 seconds for CO concentration changes, enabling quick risk alerts.
• Compact & Lightweight Design: Small size (often Φ20mm × 18mm) and low weight, easy to install in compact devices like handheld detectors or wall-mounted home alarms.
• Cost-Effective Maintenance: No need for frequent replacement of consumables; supports periodic calibration (via simple circuit adjustments) to maintain measurement accuracy over time.

Yijiajie Electronics is a full range of silicon pressure sensors from the United States, FREESCALE/, GE, MEAS, SMI, and a full range of sensing and control products from the United States pressure, temperature and humidity, gas flow, current, Hall effect, etc., Japan HAMAMATSU flame, UV sensors, photodiodes, Japan FIGARO, UK CITY, ALPHASENSE full range of semiconductors, catalytic, electrochemical gas sensors, French HUMIREL/MEAS humidity sensors and other international well-known companies authorized agents or distributors, to provide customers with product information, products Solutions, product selection, supply guarantee and logistics services, etc.