Site: Home > Home > News and events

How to detect the alcohol content in gas

2024-01-09 14:42

An alcohol tester is a detection device that can detect the alcohol content in a gas. When this value exceeds 0.2mg/ml, traffic police can determine that the driver is driving illegally.

The semi conductive alcohol tester uses tin oxide semiconductors as sensors, which have gas sensing characteristics. When the concentration of the sensitive gas in the gas in contact increases;

The resistance value it presents to the outside decreases, and the semi conductive breath alcohol tester is made using this principle.

This type of semiconductor is sensitive to different gases at different operating temperatures;

Therefore, in semi conductive breath alcohol testers, heating elements are used to heat the sensor to a certain temperature, at which point the sensor has the highest sensitivity to alcohol.

So, different thresholds for alcohol concentration in different environments can be set through the keyboard.

If the detected alcohol concentration in the air exceeds the set threshold, the microcontroller will control the buzzer to sound an alarm to indicate harm.

Related News

2024-01-09The reason for the high temperature of the thermometer
2024-01-09How to detect the alcohol content in gas
2024-01-09Forced discharge detection and overcharging detection
2024-01-08Principles of liquid-liquid distribution chromatography
2024-01-08Method for determining the water content of crude oil
2024-01-08Detection of Polyphenolic Substances in Tea
2024-01-08Determination method of chlorine
2024-01-08The structural principle of electromagnetic flow meters
2024-01-08Principle of X-ray photoelectron spectroscopy detection
2024-01-08Performance test of gel chromatographic column

Copyright 2022:Qinsun Instruments Co., Limited

High-end textile tester supplier | Textile Testing Equipment pdf | Tel:021-67800179 |