language

Filipino

Suomi

Français

Home page

MEMS Combustible Gas Sensor GM-402B

Summary:

MEMS combustible gas sensor is using MEMS micro- fabrication hot plate on a Si substrate base, gas-sensitive materials used in the clean air with low conductivity metal oxide semiconductor material. When the sensor exposed to gas atmosphere, the conductivity is changing as the detected gas concentration in the air. The higher the concentration of the gas, the higher the conductivity. Use simple circuit can convert the change of conductivity of the gas concentration corresponding to the output signal.

Feature:

* MEMS technology, Strong construction

* Good shock resistance

* Small sizes and low power consumption

* Fast response and resume

* Simple drive circuit, Long lifespan

INQUIRY

MANUAL

Share To:

APPLICATION

Home Combustible Gas Alarm

The combustible gas alarm is an alarm device for detecting gas leakage. The component that reacts to the combustible gas is a gas sensor, and the response signal is converted into an electrical signal through the circuit board. When the combustible gas in the air reaches a certain concentration value, the alarm will alarm. The high-end household combustible gas alarm can automatically start the exhaust equipment and close the gas pipeline valve at the same time. A wireless transmission device can be installed inside the gas alarm to realize overall monitoring and network alarm to ensure the safety of everyone's life and property.

MORE +

Other Detector

Formaldehyde detector is an instrument for detecting formaldehyde. Generally, semiconductor sensors and electrochemical sensors are used to realize the rapid semi-quantification of formaldehyde in indoor air on the spot, which is characterized by simple structure, small size, intuitive,easy to carry and use.

MORE +

Didn't Find Your Tarket Application?
Winsen offers tailor-made gas sensor solutions for your industry

PARAMETER

Specification Product Size

Technical Data Sheet

Part No.			GM-402B
Sensor Type			MEMS
Standard Encapsulation			Ceramic
Detection Gas			CH₄, C₃H₈ &etc.
Detection Range			1~10000ppm (CH4) 1~10000ppm (C₃H₈)
Standard Circuit Conditions	Loop Voltage	V_C	≤24V DC
	Heater Voltage	V_H	2.8V±0.1V AC or DC
	Load Resistance	R_L	Adjustable
Sensor character under standard test conditions	Heater Resistance	R_H	80Ω±20Ω（room temperature）
	Heater consumption	P_H	≤80mW
	sensitive materials resistance	R_S	1KΩ～30KΩ(in 5000ppm CH₄) 1KΩ～30KΩ(in 2000ppm C₃H₈)
	Sensitivity	S	R0(in air)/Rs(in 5000ppmCH₄)≥3 R0(in air)/Rs(in 2000ppmC₃H₈)≥3
Standard test conditions	Temp. Humidity		20℃±2℃；55%±5%RH
Standard test conditions	Standard test circuit		V_H:2.8V±0.1V；V_C :5.0V±0.1V

Free Guide! Learn the Parameter Differences of Similar Sensors

Wondering how to find the most suitable one for you out of so many sensors? Download our free guide to learn the comparison table of technical parameters.

DOWNLOAD GUIDE

RELATED PRODUCTS

As a pioneer in gas sensor based solutions with the advanced processes, technologies and products, Winsen offers a wide range of gas sensors:

MEMS NH3 Sensor GM-802B

WHY CHOOSE WINSEN

Professional and Trustworthy

Brand Precipitation

Focus on Sensor Field

115 +

National Patents

International Advanced Technology

300 +

Detection Objects

More Than 300 Kinds

Production Process

Excellence Products

60 +

Provide 60+ Countries with Solutions

Serve the Global Market

300 +

Cooperate with 300+ well-known Enterprises

More Customer’s Choice

How to choose the right sensor for your project?

We have 17 sensor series, 200+ categories, and 300+ detection objects for gas detection. Such as CO, CO2, VOC, PM2.5, CH4, LPG and so on. In particular, we also have MEMS sensors. According to your industry application, gas principle, power consumption, accuracy, and range requirements, and we can select a specific model for you. You can also use the product filter below to choose a suitable product, or choose online serivce.

BROWSE ALL

PRODUCTS

Still need help? Join the community

FAQ

Here you can learn about the selection guide, common technical problems, packaging, transportation, MOQ, delivery time, etc.

Can the Two Voltages of Mq-7 Exist All the Time, or Do They Need to Be Powered Alternately? if It is an Alternate Power Supply, What is the Appropriate Power Supply Time?

It requires alternate power supply. Please check the information on the product manual. This sensor is powered by 1.5V and 5V alternately. The low temperature and low voltage (1.5V) state can detect CO, and the high voltage (5V) is the desorption process. The recommended 5V voltage duration is 60s, 1.5V voltage duration is 90s to alternately supply power. Since it is a desorption process at 5V, it is normal for the voltage to drop when CO is 150ppm.