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
Messages
8
Reaction score
0
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^^!
 
Engineering news on Phys.org
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

upload_2017-5-23_19-23-18.png
 

Thread 'Query on Isentropic relationships (such as PV^gamma = constant)'

Hi all, I have a question. So from the derivation of the Isentropic process relationship PV^gamma = constant, there is a step dW = PdV, which can only be said for quasi-equilibrium (or reversible) processes. As such I believe PV^gamma = constant (and the family of equations) should not be applicable to just adiabatic processes? Ie, it should be applicable only for adiabatic + reversible = isentropic processes? However, I've seen couple of online notes/books, and...
View full post »

Thread 'Dry sump pump issue'

I have an engine that uses a dry sump oiling system. The oil collection pan has three AN fittings to use for scavenging. Two of the fittings are approximately on the same level, the third is about 1/2 to 3/4 inch higher than the other two. The system ran for years with no problem using a three stage pump (one pressure and two scavenge stages). The two scavenge stages were connected at times to any two of the three AN fittings on the tank. Recently I tried an upgrade to a four stage pump...
View full post »

Similar threads

Temperature, humidity and gas sealed box
Replies
1
Views
2K
What Are the Methods for Detecting Gases in a Room?
Replies
4
Views
2K
Exokat [catsuit exoskeleton] and Simbot 8.4 invention idea?
Replies
16
Views
5K
Amperiometric Sensor: Learn How It Works Internally
Replies
1
Views
2K
Air pollutant concentration measurement technique?
Replies
3
Views
3K
How to reduce the current of a signal by an exact amount?
Replies
24
Views
5K
What is this truck doing in my neighborhood gas station?
Replies
7
Views
2K
What can we learn from a friend's solar home data in Vermont?
Replies
1
Views
3K
Improvised Optics Lab Equipment
Replies
8
Views
8K
Programs Is Environmental Engineering capitalized?
Replies
2
Views
2K

Hot Threads

Recent Insights

Back
Top