Gas Sensor

Gas sensor is a monitoring device used to detect gas concentration in air and provide early warning when harmful, combustible, or oxygen-related gases reach unsafe levels. It is suitable for factories, laboratories, warehouses, HVAC systems, environmental monitoring, confined spaces, and industrial safety applications. Gas sensors help users identify gas leaks, poor air quality, oxygen deficiency, and potential explosion or poisoning risks before accidents happen, supporting safer operation, faster response, and better workplace protection.

Choose by Application

• For garages, boiler rooms, and parking areas.
• Recommended:
• CO Sensor

• For labs, confined spaces, and industrial processes.
• Recommended:
• O2 Sensor

• For pipelines, workshops, and gas storage areas.
• Recommended:
• Flammable Gas Sensor

• For offices, classrooms, and HVAC ventilation control.
• Recommended:
• CO2 Sensor

Gas Sensor FAQ

Q1: What is the best gas sensor for industrial safety monitoring?

The best gas sensor depends on the gas type. Choose CO2 sensors for ventilation, CO sensors for carbon monoxide safety, O2 sensors for oxygen monitoring, and combustible gas sensors for leak detection.

Q2: How to choose a gas sensor by gas type?

Confirm the target gas first, such as CO2, CO, O2, CH4, propane, smoke, or combustible gas. Then compare range, output, response time, environment, and installation method.

Q3: What gas sensor is best for CO2 ventilation monitoring?

An NDIR CO2 sensor is commonly used for offices, classrooms, HVAC systems, and indoor ventilation control because it supports stable continuous CO2 measurement.

Q4: What output signal should I choose when buying a gas sensor?

For industrial control, RS485, 4-20mA, 0-5V, 0-10V, UART, and PWM are common. RS485 is suitable for digital systems, while 4-20mA or voltage output is suitable for PLC and analog control.

Products Recommended by Scenario

NDIR Carbon Dioxide (CO2) Sensor	CO Transmitter with OLED Display	Electrochemical O2 Sensor	Flammable Gas Sensor
Suitable for: CO₂ Ventilation Monitoring	Suitable for: CO Gas Safety Detection	Suitable for: O₂ Concentration Monitoring	Suitable for: Combustible Gas Leak Detection
UART (Modbus) 0-2000ppm to 0-5% Vol NDIR technology, fast response	RS485, 4-20mA, 0-5V, 0-10V 0-1000ppm, 0-2000ppm OLED display, electrochemical probe	TTL, RS485 0~25% Vol Dual-electrode design	Combustible gas 0–100%LEL ATEX-certified, sensitivity drift
View Product	View Product	View Product	View Product

Gas Sensor Comparison Table