Dual-Channel NO₂-NOₓ-NO Analyzer
Direct Optics’ dual-channel analyzer is a a CRDS-based instrument, is dedicated to achieving high-precision measurement.
Patented, self-aligned optical cavities allow this instrument to provide direct and continuous measurement of NO₂, NOₓ and then NO. Two independent measurement channels provide for simultaneous readings and outputs of NO₂ and total NOₓ, resulting in critical and accurate pollution information.
Key Product Features
Ranges: 0-1000 ppb
Low detection limits: < 40 ppt
Flow rate: 500cc/min (+/- 10%)
Precision: < 0.1% of reading (RMS)
Response time: < 5s to 90%
NO₂ Photolytic Converter
The PhoNO Photolytic Converter by Direct Optics offers accurate measurement of nitrogen dioxide (NO₂) in air monitoring systems. Unlike Heated Metal Converters (HMC), which can overestimate NO₂ levels due to interference from other nitrogen compounds, the PhoNO uses photolytic technology to isolate and quantify NO₂ with high specificity.
It is designed as a direct replacement for traditional molybdenum or stainless steel converters and supports consistent, interference-free NO₂/NOₓ measurement across a wide concentration range.
Key Product Features
Interference-free NO₂/NOₓ measurement
96% NO₂ conversion efficiency
Compatible with molybdenum/SS converter replacements
Wide tested range: 0.5 ppb – 50 ppm
Response time under 2 seconds