ICAD NO2-NOx-NO Analyzer SERIES 210DL

Patented, fast, accurate and direct nitrogen dioxide detection

ICAD NOx monitors deliver precise and rapid measurements of nitrogen oxides (NO and NO2). Independent of calibration gases, ICAD instruments are versatile, suitable for both stationary laboratory and mobile applications (cars, ships, drones). With an optional built-in CO2 sensor, ICAD enables real-time on-road emissions monitoring using plume-chasing techniques. 

ICAD Advantages 

  • Precise NOx measurements: sub ppb sensitivity, high sampling rate 
  • Direct NO2 detection: free of cross sensitivities 
  • NO2 calibration gas not required: intrinsic NO2 calibration by molecular absorption cross section data 
  • Mobile and robust configuration available: temperature stabilized, IP67 rating, light weight, compact, low power consumption, optional battery operation 
  • Optional CO2 extension for emission measurements (e.g. automotive NOx emission factors) 
  • Connectivity: Wi-Fi, LAN, RS232, graphical user interface included 
Category:

The ICAD Series 210DL NO2-NOx-NO Analyzer is a precise and rapid measurement device for NO2 and NO gases. Leveraging ICAD technology, it enables direct NO2 detection without the need for gas calibration, ensuring high stability, ease of use, and low maintenance requirements. The Series 210 model offers enhanced accuracy, temporal resolution, and self-diagnostic capabilities. 

Direct NO2 Detection

  • Iterative Cavity DOAS (ICAD) spectroscopy 
  • High-resolution spectroscopic NO2 detection from 430 to 480 nm using the NO2 spectrum fingerprint 
  • No observed interferences, e.g., water, glyoxal, ozone 
  • No sample drying required (e.g., Nafion tubing) 

NOx Measurements by Internal Conversion

  • Patented, NOx-free ozone generator for NO conversion 
  • Dual measurement cells for parallel NO2 and NO detection 

Long-Term Stability and Robustness

  • Insensitive to temperature and vibrations 
  • Independent from absolute light source intensity 
  • No zero-point drift, integrated zero measurement 

Easy Setup and Operation, Low Maintenance

  • No gas calibration required, minimal maintenance effort 
  • Controllable via Wi-Fi devices (PC, tablet, smartphone) 
  • Multiple data communication protocols 
  • 19” rack 
  • Sustainable: Long lifetime, low power consumption 

Series 210 New Features

  • System health user interface and on-board diagnosis 
  • Easy adjustment of span calibration in user interface 
  • Enhanced time resolution of 1 second 
  • Improved accuracy at high concentrations 
  • Improved long-term stability 

Graphical User Interface and On-Board Diagnostics

The intuitive graphical user interface enables effortless operation and swift access to advanced features and data trends. The ICAD can be remotely controlled and monitored via any Wi-Fi-enabled device (PC, tablet, smartphone) without requiring additional software. A detailed system health dashboard provides real-time status updates of crucial sensor data (e.g., gas flow, power supply, temperature), facilitating efficient on-board troubleshooting. 

Specification  Value 
Measurement Range  0 – 2000 ppb 
Time Resolution  1 sec minimum temporal averaging 
Limit of Detection (2σ)  0.03 ppb at 60 sec 
Precision (1σ)  0.12 ppb at 1 sec;  

0.02 ppb at 60 sec 

Detection of NO₂  Direct ICAD spectroscopy 
Detection of NO / NOₓ  By conversion to NO₂ 
Response Time (10% to 90%)  1 sec at 2 l/min 
Zero Drift  Less than 0.1 ppb/month² 
Sample Flow  1 to 2 l/min 
Path Length Characterization  Helium (every 1 to 2 years, optional) or NO2 reference measurement or Gas free ICOM3 method 
Calibration  NO: calibration gas not needed;  

NO gas for converter calibration above 1000 ppb (every 12 months) 

Other Detectable Gases  Glyoxal, CO₂ (optional NDIR sensor) 
Mechanical Stability  Insensitive to vibrations 
Power Consumption  Less than 40 W at 12 V (typ.) 
Processing Unit  Internal embedded PC, with data analysis and measurement software 
Temp. Range of Operation  -10 to +40°C 
Temperature Sensitivity  Less than 0.01 ppb/°C 
Cross Sensitivity  No significant cross sensitivity5 
Weight  Less than 12 kg (depending on config) 
Consumable Gases  No gases needed for operation 
Dimensions  19″ rack housing: 43.8 x 13.3 (3HU) x 66.5 cm 
Data Communication  LAN/WI-FI/RS232/M2M/OPCUA; Bayern-Hessen Protocol; Volt./Current Output 
Start-up Time  Less than 1 min (typ.) 
Model Variations  ICAD-NO₂-210L (NO only);  

ICAD-NOX-210DL (NO + NO₂) 

ICAD MODEL OVERVIEW

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ICAD PRODUCT AND ACCESSORIES LIST

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ICAD MODEL CONFIGURATION GUIDE

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STANDARD ICAD MODELS

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HIGH PRECISION ICAD

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SHIP EMISSION MEASUREMENTS

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ON-ROAD VEHICLE EMISSIONS (PLUME CHASING)

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ICAD instruments employ optical resonators to create extended absorption paths of up to 4 kilometers, enabling highly accurate detection of NO2 and NOx, particularly at low concentrations. Gas concentrations are determined using patented Iterative Cavity DOAS (ICAD) spectroscopy within the wavelength range of approximately 430 to 480 nanometers. The measurement setup includes an optional CO2 sensor and an additional NO-to-NO2 converter for NOx measurement.

Nguyên lý đo lường và lưu lượng khí
Measurement Principle and Gas Flow
ICAD-NOx-200D(L) ICAD-NOx-200DM ICAD-NOx-200DC
19″ RACK HOUSING
FOR LAB AND MOBILE APPLICATIONS
L-VERSION FOR ENHANCED SENSITIVITY
RUGGED AND WATERPROOF
PERFECT FOR STATIONARY AND MOBILE FIELD APPLICATIONS
COMPACT AND LIGHT-WEIGHT
FOR UAV APPLICATIONS
ICAD_Rack ICAD_v200 ICAD UAV
ICAD_Rack ICAD_v200 ICAD UAV
ICAD_Rack ICAD v200 ICAD UAV 3

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