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   Updated: 5 Mar 2018
 

 

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GAS DETECTION - TOXIC, OZONE - STANDARD

   

Why measure it?

In the upper atmosphere ‘good’ ozone (O3) protects life on Earth from the sun’s ultraviolet rays.

At ground level ‘bad’ ozone is a criteria pollutant that is a significant health risk, especially for people with asthma.

It also damages crops, trees and other vegetation and is a main component of smog.

Where does it come from?
Ground level ozone is not emitted directly; it is created by chemical reactions between oxides of nitrogen (NOx) and volatile organic compounds (VOC) in the presence of sunlight.

Emissions from industrial facilities and electric utilities, vehicle exhaust, gasoline vapors, and chemical solvents are some of the major sources of NOx and VOC.

How do we measure it?
The O3 detector module continuously measures ozone in ambient air. 

The ozone detector module incorporates a gas sensitive semiconductor detector.

This detector is a tungsten oxide (WO3) formulation that is particularly sensitive to O3 when operated at elevated temperatures.

By subjecting the sensor to periodic zero flow conditions and temperature cycling, the detector module compensates for drift and cancels interferences from NO2 and VOCs.

Click on OR485 to see Modbus network configuration.

 

 

Desktop

 


          Wall

 

 

Measuring

Modbus reg.

Duct/Wall

 

 

Ozone in Air

O3-detect.

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