Alcohol sensors are a powerful tool for traffic police in detecting drunk driving and can also be used in other locations where working under the influence of alcohol is prohibited. With the rapid development of sensor technology, alcohol sensors are becoming increasingly practical and accurate. So, what is the working principle of an alcohol sensor? Let's take a look!
How does an alcohol sensor work?
When detecting ethanol gas, the gas sensor operates based on the chemical reaction principle of ethanol. A seemingly simple ethanol gas detection operation involves many intricate details in its gas sensing principles. Below, we will analyze the specific working principle of an ethanol gas sensor:
The alcohol sensor on the detector can detect alcohol in the breath. The higher the concentration of alcohol in the breath, the stronger the detectable signal. Higher blood alcohol content is correlated with higher breath alcohol content. According to international standards, the alcohol content in exhaled breath is 2100 times higher than in blood; therefore, we can determine the blood alcohol content based on the detected breath alcohol content. Currently, rapid blood alcohol testing is used for traffic checks in various countries. With advancements in science and technology, alcohol sensor development is now quite mature.
To enable more accurate monitoring of alcohol concentration, ICbuy.com offers high-precision alcohol sensors: the Japanese Figaro TGS2620 alcohol sensor and the American SPEC Sensors 3SP-Ethanol-1000.
I. Description of the TGS2620 Alcohol Sensor
The sensing element consists of an integrated heater and a metal-oxide-semiconductor on an alumina substrate. When the detected gas is present in the air, the higher the concentration of that gas, the higher the conductivity of the sensor. Using a simple circuit, the change in conductivity can be converted into a signal output corresponding to the gas concentration. The TGS2620 exhibits high sensitivity to organic solvents and other volatile gases, making it ideal for organic solvent gas detectors. Due to the small size of the sensing element, the TGS2620 requires only 42mA of heater current and is housed in a standard TO-5 metal package.
II. Features of the TGS2620 Alcohol Sensor:
Low power consumption
High sensitivity to ethanol and organic solvents
Long service life and low cost
* Simple application circuit
Small size
III. Applications of the TGS2620 Alcohol Sensor:
* Ethanol Detector
* Detectors and alarms used for detecting organic solvents
Solvent analyzers for use in factories, dry cleaners, and the semiconductor industry.
I. Description of SPEC Sensors 3SP-Ethanol-1000 Alcohol Sensor (USA):
SPEC Sensors' screen-printed electrochemical sensor technology (SPEC Sensor®) revolutionizes existing technologies, enabling new applications for user and industrial safety monitoring.
SPEC's 3SP-Ethanol-1000 printed electrochemical alcohol sensor is of high quality and low price. The ultra-thin printed sensor is easy to integrate into wireless, handheld, and other networked solutions. Due to its high performance, low cost, and small size, these sensors are ideal for health, environmental, industrial, and residential monitoring.
II. Features of the SPEC Sensors 3SP-Ethanol-1000 Alcohol Sensor (USA):
Small size, low profile (20x20x3.0mm)
Long lifespan (2 years under normal use, with an expected lifespan of up to 10 years in environments free of alcohol and other interfering gases).
Rapid Response
Low power consumption
Individually calibrated (NIST traceable)
RoHS certified
III. Applications of the SPEC Sensors 3SP-Ethanol-1000 Alcohol Sensor (USA):
Law enforcement analyzer
Evidence-based breath alcohol test
Portable breathalyzer
Personal breathalyzer
Alcohol gas sensor detector operation method
Also known as an alcohol detector, it is a powerful tool for traffic police to check for drunk driving. However, its use and techniques are not so easy to master. Next, let's take a look at how to operate an alcohol sensor detector.
1. First, press the power switch of the instrument. At this time, the instrument will perform internal self-test and preheating, and display a countdown from 200 to 0, which lasts for 20 seconds.
2. When the timer ends, the instrument will emit an audible alert, the green light will illuminate, and the yellow light in the middle will flash, indicating that the instrument is functioning normally and you can begin testing.
3. Blow air into the air inlet for 4 seconds. If alcohol is detected, the buzzer will sound an alarm, and both the red and green lights will flash simultaneously. After another 4 seconds, the concentration data will be displayed. If the concentration is between 0.00 and 0.40, only the green light will flash; if it is greater than or equal to 0.50, only the red light will flash, accompanied by a rapid audible alarm. The instrument display will turn OFF after holding the concentration data for 15 seconds.
4. If no alcohol is detected in the breath test, or if no test is performed within 30 seconds of powering on, the instrument display will change from 000 to OFF.
5. When the instrument displays OFF, you need to start the measurement again.
The above is an introduction to the principle of alcohol sensors brought to you by ICBC.com. We believe that after reading this article, you will have a deeper understanding of alcohol sensors. Alcohol sensors are widely used in the field of gas sensors. In recent years, with the increase in drunk driving accidents, their usage frequency has increased, while also providing protection for drivers' traffic safety. In the future, the role of ethanol gas sensors will not be limited to transportation but will also appear in various gas detection applications.
