Esperanto
Shqiptare
Euskara
Zulu
Latinus
Cymraeg
தமிழ்
Slovak
Slovak
Afrikaans
- Home
- Products
×
Products
Winsen focuses on the development and innovation of sensors. Committed to providing unique solutions in various fields.
View More >- ALL PRODUCTS
- Column>
- Popular Refrigerant Gas Sensors — — More Compliant with New Standards
- Chinese CO2 Sensor Manufacturer
- Dust Sensor Factory in China
- Methane Sensor, Escort for Life
- CO Sensor, Guardian of Health and Safety
- Air Quality Sensor, Protective Net for Urban Purification
- Industrial Gas Sensor for Life Safety
- The Secret Weapon of Intelligent Sensing — — PIR Sensor
- The Heart of Modern Vehicles — — Smart Automotive Sensor
- Application
×
Application
Winsen plays an important role in various industries. Create a beautiful environment, provide a comfortable home, and ensure the safety of life.
View More > - Service
×
Service
Winsen's service philosophy is to create value for customers. Customer satisfaction is our greatest achievement.
View More > - News
×
News
Winsen's warm corporate culture drives employees to live an active life. We are a big family.
View More > - About us
×
About us
Winsen has our own R&D team and factory. In the field of sensors for over 20 years.
View More > - Contact us
Semiconductor Alcohol Sensor MQ303B
Summary:
The gas sensitive material used in the MQ303B gas sensor is a semiconductor material with low conductivity in clean air. When there is alcohol vapor in the sensor environment, the electrical conductivity of the sensor increases with the increase of the concentration of alcohol gas in the air. A simple circuit can be used to convert the change in conductivity into an output signal corresponding to the concentration of the gas.
Feature:
* High sensitivity
* Quick response recovery
* Long life
* Low power consumption
* Low cost
* Small size
Share To:
APPLICATION
The picture shows a common "ignition interlock system" with an alcohol detection function in the United States. This lock is connected to the ignition system of the car. Before ignition, the driver must blow air to ensure that the alcohol concentration in the body does not exceed the standard. and the car can start.
Strengthen the punishment of drinking and driving in all the country to reduce the vicious traffic accidents caused by drunk driving. This involves testing a person's alcohol level and using equipment to do the testing. An alcohol detector is an effective tool for measuring the alcohol content in the human body.
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.
Didn't Find Your Tarket Application?
Winsen offers tailor-made gas sensor solutions for your industry
PARAMETER
Technical Data Sheet
| Model | MQ303B | ||
| Sensor Type | Semiconductor | ||
| Standard Encapsulation | Metal Cap | ||
| Target Gas | Alcohol | ||
| Detection range | 20~500ppm alcohol | ||
| Standard Circuit Conditions | Loop Voltage | VC | ≤6V DC |
| Heater Voltage | VH | 0.9V±0.1V AC or DC | |
| Load Resistance | RL | Adjustable | |
| Sensor character under standard test conditions | Heater Resistance | RH | 4.0Ω±0.5Ω (room temp.) |
| Heater consumption | PH | ≤140mW | |
| Zero point | V0 | 0.01-0.45V | |
| Sensitivity | VS | 1.0-2.5V(125ppm alcohol) | |
| Concentration Slope | α | ≤0.6(R300ppm/R50ppm alcohol) | |
| Standard test conditions | Temp. Humidity | 20℃±2℃；55%±5%RH | |
| Standard test circuit | VC:3.0V±0.1V VH:0.9V±0.1V |
||
| Preheat time | Not less than 48 hours | ||
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.
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:
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:
WHY CHOOSE WINSEN
Professional and Trustworthy
Brand Precipitation
Focus on Sensor Field
National Patents
International Advanced Technology
Detection Objects
More Than 300 Kinds
Production Process
Excellence Products
Provide 60+ Countries with Solutions
Serve the Global Market
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.
Still need help? Join the community
Here you can learn about the selection guide, common technical problems, packaging, transportation, MOQ, delivery time, etc.
How long is the delivery time?
How is your packaging condition?
What is your MOQ?
Subscribe to the Winsen Newsletter
Address:No.299 Jinsuo Road, National High-tech Zone, Zhengzhou.
Copyright © 2021 Zhengzhou Winsen Electronics Technology Co, Ltd. All rights reserved Powered by 300.cn SEO