How it works
The Teledyne API O₃ UV Absorption Ozone Analyser (T400) is a robust ozone analyser with a high level of precision and accuracy. From very high to very low ppb it produces repeatable, reliable measurements. The Model T400 UV Absorption analyser uses a system based on the Beer-Lambert law for measuring low ranges of ozone in ambient air.
A 254 nm UV light signal is passed through the sample cell where it is absorbed in proportion to the amount of ozone present. Periodically, a switching valve alternates measurement between the sample stream and a sample that has been scrubbed of ozone. The result is a true, stable ozone measurement.
Servicing
Datasheet
O₃ UV Absorption Ozone Analyser (T400)
Specifications
- Ranges Min: 0 – 100 ppb Full scale
- Max: 0 – 10 ppm Full scale (selectable, dual-range supported)
- Measurement Units ppb, ppm, μg/m3, mg/m3 (selectable)
- Zero Noise < 0.2 ppb (RMS)*
- Span Noise < 0.5% of reading (RMS) above 100 ppb
- Lower Detectable Limit < 0.4 ppb*
- Zero Drift < 1.0 ppb/24 hours
- Span Drift < 1% of reading/24 hours
