ECO PHYSICS’s nCLD O3 is displayed on the ENVEX exhibition in Seoul, South Korea.
Our partner KINSCO technologies displays a new prototype for Ozone measurement in ambient air and climate research.
The event takes place at the COEX Convention & Exhibition Center in Seoul.
The nCLD O3 prototype, what do we need:
- Ambient air inlet with particulate filtration
- A reaction chamber or low-pressure flow cell
- A controlled NO feed from a cylinder or permeation-based source (1% NO).
- A photomultiplier tube or other sensitive optical detector.
- Flow control, pressure control, and a signal-processing unit
Using NO as the supply gas
- The instrument must keep NO at a stable, known flow and concentration, so ozone remains the limiting factor.
- The NO supply should be high enough, that all ozone entering the chamber reacts, but not so high that the system becomes insensitive or unstable due to excess background signal.
- The calibration is then based on the relationship between emitted light and ozone concentration under fixed flow conditions.
A useful simplification,think of it like this:
a) Inject a surplus of NO, let ambient ozone “use it up”.
b) Measure the flash of light created by that reaction.
c) The stronger the flash, the more ozone was present.