In the fields of industry, environmental monitoring and smart home, semiconductor gas sensors have become key devices for gas detection due to their high sensitivity, fast response and stable performance. As a professional gas sensor manufacturer, Shanxi Tengxing Sensor Technology Co., Ltd. analyzes the core technology, advantages and application scenarios of semiconductor gas sensors for you.

Semiconductor gas sensor: Working principle

Semiconductor gas sensors work based on the resistance change principle of metal oxide semiconductor (MOS) materials:

Gas adsorption: When the target gas (such as CO, CH₄, NO₂, etc.) contacts the surface of sensitive materials (such as SnO₂, ZnO), a chemical reaction occurs.

Resistance change: Gas molecules interact with semiconductor materials, changing their carrier concentration, resulting in a change in resistance value.

Signal output: By measuring the resistance change and converting it into an electrical signal output, the gas concentration is detected.

Core structure and technological innovation

Tensensor semiconductor gas sensors adopt optimized design to ensure high performance and long life:

High-sensitivity gas-sensitive layer: nano-scale metal oxide materials to improve detection accuracy

Precision heating element: constant temperature control to ensure stable operation of the sensor

Anti-interference electrode: gold/platinum electrode design to reduce the impact of environmental factors

Sturdy packaging: dust-proof, moisture-proof, suitable for harsh industrial environments

MQ-K5B 

MQ-D4B combustible gas sensor

MQ-D5B Combustible Gas Sensor

MQ-K4B Semiconductor CH4 Sensor

MQ-G4 Semiconductor CH4 Sensor

Product advantages

Fast response: stable signal output in <10 seconds

Low power consumption: suitable for battery-powered portable devices

Long life: anti-poisoning, anti-aging, continuous and reliable operation

Wide detection range: supports a variety of flammable/toxic gas detection

Typical application scenarios

Industrial safety: chemical plants, mines combustible gas leakage monitoring

Environmental monitoring: air quality detection (VOCs, CO₂, etc.)

Smart home: gas alarm, fresh air system control

Consumer electronics: vehicle air quality monitoring, smart wearable devices

Why choose Tensensor?

Tensensor has more than 40 years of experience in gas sensor research and development, providing:

High cost-effective standard products

Customized solutions (adjustable sensitivity, size, interface, etc.)

Professional technical support to help projects land quickly

Note: Product specifications can be customized according to needs, please consult our engineering team for details!

Website: www.tensensor.com

Email: [email protected]

Tel/WhatsApp: 86 18335818384