MEMS CO Sensor GM-702B


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  • GM-102B.png

Summary:

MEMS carbon monoxide 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 structure

* Low power consumption

* High sensitivity to CO gas

* Fast response and resume

* Simple drive circuit

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APPLICATION

CO Alarm

In daily life, coal, charcoal, and liquefied petroleum gas will produce carbon dioxide after combustion, and carbon dioxide will be reduced to CO in a poorly ventilated environment. CO is a suffocating poison gas, which is colorless, odorless, and non-irritating. If CO leaks, it cannot be discerned by the eye or nose. As we all know, poor ventilation during combustion can lead to a decrease in oxygen content, resulting in incomplete combustion and increased CO production. When the concentration of CO in the room continues to increase, people will gradually feel headache, nausea, difficulty breathing, collapse, dizziness.

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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.

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PARAMETER

Specification Product Size

Technical Data Sheet

Part No. GM-702B
Sensor Type MEMS CO Gas Sensor
Standard Encapsulation Ceramic
Detection Gas CO gas
Detection Range 5~5000ppm (CO)
Standard Circuit Conditions Loop Voltage VC ≤24V DC
Heater Voltage VH 2.5V±0.1V AC or DC (high temp.) 0.5V±0.1V AC or DC (low temp.)
Heating Time TL 60s±1s (high temp.) 90s±1s (low temp.)
Load Resistance RL Adjustable
Sensor character under standard test conditions Heater Resistance RH 80Ω±20Ω(room temperature)
Heater consumption PH ≤50mW
sensitive materials resistance RS 1KΩ~30KΩ(in 150ppm CO)
Sensitivity S R0(in air)/RS(in 150ppmCO)≥3
Standard test conditions Temp. Humidity 20℃±2℃;55%±5%RH
Standard test circuit

VH: 2.5V±0.1V (high temp.) 0.5V±0.1V (low temp.)

VC : 5.0V±0.1V

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RELATED PRODUCTS

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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.

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Winsen is a factory with over 30,000 square meters area and 500+ production machines which is focusing on sensors development&manufacturing. It has strong R&D strength with more than 100 R&D personnel.

How long is the delivery time?

1-7 days after received payment

What is your warranty term?

The warranty period is one year from the date of shipment. If the appearance of the product is not damaged, it can be returned after confirmation. For damage not caused by Winsen, the customer shall bear all maintenance costs.

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