What's inside a gas detection Station?

AI Thread Summary
Gas detection stations utilize various sensor technologies to accurately measure different gases, including electrochemical, metal-oxide, and infrared sensors. While electrochemical sensors are common, they face limitations such as cross-sensitivity issues. Infrared sensors, often involving lasers and mirrors, are highlighted for their precision in measuring gas concentrations. The discussion emphasizes the need for reliable sensors that can certify specific gas concentrations without ambiguity. Understanding the types of sensors used in these stations is crucial for improving outdoor gas detection accuracy.
ervays
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Good Morning guys!

I'm trying to understand more about gas sensors. I know a lot about electrochemical and metaloxide sensors. I've faced all the limits that those sensors presents when you are using them outdoors.

Now I'm wondering how the gas sensors stations can measure different gases with such precission. I suppose that they use different gas sensors and I'd like to know more about them.
Does anyone knows about this professional gas sensors? Some web where I can start looking?

Cheers flokes/ladys^^!
 
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Baluncore said:
Can you please be more specific about what type of sensor you do not understand.

https://en.wikipedia.org/wiki/Gas_detector#Types

It's not about what sensor do I understand or not. What I'd like to know is which kind of sensors are inside this stations.

I've worked with metal-oxide and electrochemical. I know there are infrared, but what are the top ones? What kind of sensors are the ones that can certify that there is X concentration of the gas for sure?

Electrochemical sensors can not, cause they have the cross sensitivity issue which doesn't have a mathematical solution.
 
As Mr Baluncore has indicated, it's all lasers and mirrors.
https://www.sick.com/de/en/product-portfolio/gas-analyzers/in-situ-gas-analyzers/c/g284253

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