Ambient Nitrogen Dioxide Analyzer, Cavity Attenuated Phase Shift
CAPS analyzer measuring nitrogen dioxide directly, without catalytic conversion.
Louise Corscadden, PhD
Director of Science · ConductScience
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Key Specifications
Full details →- Model fit
- Configured during quote
- SKU family
- CS-AIR-00015
- Sizing
- Model-specific dimensions confirmed from the selected configuration
- Ordering
- Quote-reviewed before fulfillment
- Category
- Air Quality
- Build notes
- Confirm accessories, station layout, and support needs before purchase
An ambient nitrogen dioxide analyzer using cavity attenuated phase shift. It measures nitrogen dioxide directly rather than by difference across a converter, which removes the conversion artefact that makes converter-based NO₂ figures contentious.
Key features
- Multi-tasking software allows viewing test variables while operating.
- Internal data logging with 1 min to 365 day.
- Temperature and pressure compensation.
- Continuous system diagnosis with alarm.
Applications
Built for regulatory air-quality networks and atmospheric chemistry groups.
- ambient air quality monitoring
Features & Benefits
Range
- 0~500ppb
Lower Detection Limit
- ≤0.2ppb
Zero Drift (24 hours)
- ≤0.1ppb
Response Time
- ≤30s
Indication Error
- ±1%F.S
What does this instrument measure, and who is it for?
It measures ambient nitrogen dioxide directly, without inferring it by difference across a converter. It is built for regulatory air-quality networks and atmospheric chemistry groups. It is designed for continuous, unattended operation in a monitoring shelter or cabinet, with periodic zero and span calibration.
What measurement principle does it use?
Cavity attenuated phase shift. Nitrogen dioxide is measured directly rather than by difference across a converter, which removes the conversion artefact that makes converter-based figures contentious.
Which specifications are confirmed?
The manufacturer's published specification table lists five parameters for this instrument, and every one of them is reproduced on this page. They include Range at 0~500ppb, Lower Detection Limit at ≤0.2ppb and Zero Drift (24 hours) at ≤0.1ppb. ConductScience transcribed them from the manufacturer's engineering documentation without alteration.
What should be confirmed before ordering?
Confirm siting and inlet configuration, zero and span gas supply, the calibration interval your reporting regime requires, and the data acquisition and reporting path. These are configured and quoted per installation, so raise anything unusual about the site during quote review rather than after delivery.
What else is needed to run it?
A zero air generator and a multi-point dilution calibrator. Every concentration this analyser reports is measured against its zero. A zero that is not actually zero is a systematic error in every number downstream of it, so the calibration gear is not an accessory — it is what makes the readings defensible.
How is it supplied?
This instrument is configured and quoted per installation rather than sold at a list price. Request a quote and we will confirm the configuration, the site requirements and the lead time before anything is ordered.
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