Gas-Sensing is a partner company to Oxidation Technologies, LLC. Oxidation Technologies provides services and products exclusively to the ozone industry. For all ozone related inquiries please refer to Oxidation Technologies.
What is Ozone?
The oxygen atom is unstable in the atomic form. Oxygen is stable in the diatomic form as O2. The air we breath today is made up of about 21% oxygen, this makes oxygen one of the most common molecules found in nature today.
Ozone is a triatomic form of oxygen, meaning that the molecule, ozone, is made up of 3 oxygen atoms. Unlike oxygen, ozone is a visible gas with a light blue color at very high concentrations. At low concentrations ozone is colorless. Ozone also has a distinct odor that is noticeable at very low levels and may be associated with a “clean” smell, at higher levels ozone has a very pungent odor. Ozone is an unstable gas that readily decomposes to oxygen naturally. Ozone is also a highly reactive gas that acts as a very strong chemical oxidant.
Measuring Ozone in Air
Ozone is Highly Reactive
- Ozone concentration gradients are common in rooms and are greatly influence by air movement and eddy currents. This effect will be more pronounced at concentrations less than 100 PPB.
Monitor Design and Use
- Aeroqual’s ozone monitors are designed with "active sampling" to maximize air sampling at the sensor (to minimize ozone losses). Most expensive, analytical instruments also employ active sampling (e.g. UV photometry).
- Products without "active sampling" (electrochemical and conventional HMOS products) will normally under-read ozone concentrations below 200 parts per billion and struggle with sensitivity and accuracy, particularly in low air flow.
- "Active sampling" requires air to be blown or pumped to the sensor under precise flow conditions. Aeroqual fan based monitors are designed to be held at right angles to any direct stream being measured. Avoid forcing pressurized air into active sampling monitors:
- Air inlets are manufactured from cleaned stainless steel mesh and fluoropolymer materials to minimize ozone loss.
Measuring Ozone in an Occupied Room
The important measurement is:
Our full line of Ozone (O3) monitoring solutions are shown below