What distances can the OPC‑UV3‑DL‑301 cover?

The system supports open-path measurements over distances from 20 to 150 meters using a retroreflector setup.

How does the ICAD‑HONO analyzer detect HONO and NO2?

The ICAD‑HONO/NO2‑210L uses high‑resolution ICAD spectroscopy between 350–390 nm. It detects HONO and NO2 directly without converters, chemicals or sample drying.

Does the ICAD‑HONO analyzer require calibration gas?

No calibration gas for HONO or NO2 is required. Concentrations are derived from molecular absorption cross-sections, combined with automatic zero measurements.

What are the typical detection limits of the ICAD‑HONO/NO2‑210L?

The detection limits (2σ at 60 s) are 0.08 ppb for HONO and 0.16 ppb for NO2.

Is the ICAD‑HONO system affected by humidity or temperature?

No significant humidity or temperature sensitivity. The optical system is temperature-stabilised and insensitive to vibrations.

Can the ICAD‑HONO analyzer be used for mobile measurements?

Yes. The mobile IP67 version supports car, ship and UAV deployments with low power consumption and fast response times.

NO is converted to NO2 using an internal ozone-based, NOx-free converter. Two parallel measurement cells allow precise NO and NO2 detection for accurate NOx quantification.

Can the ICAD analyzer be used for mobile measurements?

Yes. Rugged IP64/67 M-versions are designed for mobile use, including vehicle plume chasing, ship emission measurements and UAV-based deployments.

high time resolution

OPEN PATH HYBRID INSTRUMENT

Airyx Admin — Mon, 24 Nov 2025 14:30:26 +0000

Airyx OPC‑VIS‑LED‑300 Hybrid Open Path DOAS Instrument

PRECISE OPEN-PATH AND VERTICAL MAX-DOAS MEASUREMENTS FOR ADVANCED GAS AND AEROSOL MONITORING.

Description

This section provides an overview of the hybrid open‑path and MAX‑DOAS concept used by the OPC‑VIS‑LED‑300.

Hybrid DOAS concept

The Airyx OPC‑VIS‑LED‑300 is a hybrid open path DOAS instrument. It combines active open‑path DOAS and passive MAX‑DOAS in one compact system. As a result, it supports long‑path concentration measurements and vertical profiling in a single device.

Multi‑path open‑path mode

In active mode, a 450 nm LED and retroreflectors create a defined optical path for NO₂ and Glyoxal measurements. Meanwhile, the motorized UV telescope can switch between several reflectors, enabling tomography, fence‑line monitoring and spatial coverage without manual alignment.

Passive MAX‑DOAS mode

In passive mode, the instrument retrieves vertical profiles of NO₂, H₂O, Glyoxal, HCHO, HONO, O₃, O₄, SO₂, IO, BrO and OClO. Therefore, it supports a wide range of atmospheric and air‑quality applications. A temperature‑stabilized spectrometer (300–550 nm, FWHM < 0.5 nm) ensures precise spectral data. In addition, the stable optical design supports accurate retrievals in both active and passive operation. Thanks to its IP64 housing and internal heating, the OPC‑VIS‑LED‑300 performs reliably in demanding outdoor environments. Consequently, it is suitable for both short‑term campaigns and long‑term monitoring. Moreover, combining two measurement modes in one instrument reduces equipment complexity in the field.

System Overview

The image illustrates the main components and beam geometry of the hybrid open‑path and MAX‑DOAS setup.

Key Features

The hybrid open path DOAS design provides accurate long‑path gas measurements and multi‑species retrievals from a single compact setup.

Accurate gas detection

Active open‑path DOAS detects NO₂ and Glyoxal with proven optical stability. Long‑path remote sensing avoids losses in sampling lines and improves accuracy under varying atmospheric conditions.

Vertical profiles via MAX‑DOAS

Passive MAX‑DOAS retrievals deliver vertical profiles of NO₂, H₂O, Glyoxal, HCHO, HONO, O₃, O₄, SO₂, IO, BrO and OClO. This supports detailed boundary‑layer and atmospheric chemistry studies.

Compact and flexible hybrid design

Active and passive DOAS measurements are integrated in one compact unit. As a result, the system reduces logistical complexity during field deployments and survey campaigns.

Rugged and mobile

An IP64 housing with internal heating and dew‑point monitoring ensures stable performance in outdoor environments. Optional battery operation increases mobility for remote sites.

Plug‑and‑play setup

The motorized telescope allows automatic self‑alignment. Consequently, the instrument can be deployed quickly and used for tomography or fence‑line monitoring with minimal effort.

Calibration‑free operation

DOAS technology does not require calibration gases and shows no significant long‑term drift. Therefore, operating costs remain low even during extended measurement periods.

Applications

The OPC‑VIS‑LED‑300 hybrid analyzer supports both open‑path and vertical profiling applications. Therefore, it is suitable for a wide range of atmospheric and industrial monitoring tasks. As a result, users can answer several atmospheric questions with only one instrument.

Air‑quality monitoring and workplace exposure analysis
Industrial emission oversight and process control
Satellite validation near the surface (MAX‑DOAS)
Boundary‑layer chemistry and aerosol optical property studies
Fence‑line monitoring at industrial or agricultural sites
Tomographic spatial distribution analysis using multiple reflectors

In addition, the system design simplifies field handling and reduces deployment time. This makes the OPC‑VIS‑LED‑300 a flexible solution for both temporary campaigns and fixed monitoring stations. For ammonia monitoring, see our OPC‑UV3‑DL‑301. For greenhouse‑gas monitoring, visit the WGA020 product page.

DOWNLOADS

OPC-VIS-LED-300 DATASHEET

PRODUCT AND ACCESSORIES LIST

Frequently Asked Questions

What measurement techniques does the OPC‑VIS‑LED‑300 use?

The instrument combines active open‑path DOAS using a 450 nm LED with passive MAX‑DOAS. This hybrid approach enables both long‑path concentration measurements and vertical profile retrievals.

Which gases can be detected in active open‑path mode?

In active mode, the OPC‑VIS‑LED‑300 detects NO₂ and Glyoxal along a defined optical path between the telescope and a retroreflector.

Which species are available in MAX‑DOAS mode?

Passive MAX‑DOAS retrievals provide information on NO₂, H₂O, Glyoxal, HCHO, HONO, O₃, O₄, SO₂, IO, BrO and OClO, as well as aerosol optical properties. Therefore, the system supports a broad range of atmospheric studies.

What typical path lengths are possible?

Open‑path measurements can be performed over distances of up to 1000 m. The achievable range depends on visibility, reflector configuration and integration time.

Does the instrument require calibration gases?

No. DOAS measurements are inherently calibration‑free and do not require calibration gas cylinders. This significantly simplifies operation and reduces long‑term costs.

Measurement Setup Illustration

This diagram shows typical instrument placements and viewing geometries used in field deployments.

Optical and Measurement Specifications

The following parameters describe the optical configuration, spectrometer characteristics and detectable gases of the OPC‑VIS‑LED‑300.

Parameter	Specification
Optics	UV lens telescope, 300 mm focal length
Light Source	LED 450 nm (*)
Detectable Gases (Open‑Path)	NO₂, Glyoxal
Limit of Detection (500 m, 1 min)	NO₂: 2.2 ppb Glyoxal: 2.2 ppb Values depend on visibility and path length
Detectable Gases (MAX‑DOAS Passive Mode)	NO₂, H₂O, Glyoxal, HCHO, HONO, O₃, O₄, SO₂, IO, BrO, OClO
Time Resolution	Up to 5 s per light path
Path Length to Reflector	Up to 1000 m (**)
Compact Spectrometer	300–550 nm, FWHM < 0.5 nm, temperature stabilized

Mechanical and System Specifications

This section summarizes mechanical design, housing protection, electronics and power consumption based on the system datasheet.

Parameter	Specification
Motorization	Azimuth 0°–360°, Elevation −40° to 75°
Housing	IP64, internal heating, dew‑point monitoring
Control Unit	Integrated embedded PC, Windows 10 IoT
Temperature Control	Heating (cooling on request)
Additional Sensors	Elevation, ambient temperature, pressure, internal dew point
Data Interfaces	Internal data storage, LAN, WiFi, machine‑to‑machine
Power Supply / Consumption	24 V, 50 W max. (12 V version & battery operation available)

Overall, the OPC‑VIS‑LED‑300 hybrid open path DOAS instrument combines optical performance and robust system design for demanding field deployments.

Interested in hybrid open‑path and MAX‑DOAS monitoring? Contact our team for technical details, pricing or application support.

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Contact Airyx Headquarters

Airyx GmbH is based in Heidelberg, Germany. In addition, our team supports customers worldwide in environmental monitoring, wastewater emissions and air‑quality research. Furthermore, we provide fast technical assistance and reliable guidance for instrument selection.

How to Reach Our Team

Email: info@airyx.de Phone: +49 6221 9068977 Address: Airyx GmbH Hans‑Bunte‑Str. 4 69123 Heidelberg, Germany If you need product information, quotations or technical assistance, please get in touch. As a result, you can rely on quick feedback when requesting quotations, technical details or product recommendations. [/av_textblock] [av_textblock fold_type='' fold_height='' fold_more='Read more' fold_less='Read less' fold_text_style='' fold_btn_align='' textblock_styling_align='' textblock_styling='' textblock_styling_gap='' textblock_styling_mobile='' size='' av-desktop-font-size='' av-medium-font-size='' av-small-font-size='' av-mini-font-size='' font_color='' color='' background='bg_color' background_color='' background_gradient_direction='vertical' background_gradient_color1='#000000' background_gradient_color2='#ffffff' background_gradient_color3='' padding='' padding_sync='true' av-desktop-padding='' av-desktop-padding_sync='true' av-medium-padding='' av-medium-padding_sync='true' av-small-padding='' av-small-padding_sync='true' av-mini-padding='' av-mini-padding_sync='true' fold_overlay_color='' fold_text_color='' fold_btn_color='theme-color' fold_btn_bg_color='' fold_btn_font_color='' size-btn-text='' av-desktop-font-size-btn-text='' av-medium-font-size-btn-text='' av-small-font-size-btn-text='' av-mini-font-size-btn-text='' container_tag='' fold_timer='' z_index_fold='' id='' custom_class='' template_class='' av_uid='av-mn4iafrq' sc_version='1.0' admin_preview_bg='']

Send Us a Message

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Monaco, Moldova, Montenegro, Madagascar, Marshall Islands, Macedonia [FYROM], Mali, Myanmar [Burma], Mongolia, Macau, Northern Mariana Islands, Martinique, Mauritania, Montserrat, Malta, Mauritius, Maldives, Malawi, Mexico, Malaysia, Mozambique, Namibia, New Caledonia, Niger, Norfolk Island, Nigeria, Nicaragua, Netherlands, Norway, Nepal, Nauru, Niue, New Zealand, Oman, Panama, Peru, French Polynesia, Papua New Guinea, Philippines, Pakistan, Poland, Saint Pierre and Miquelon, Pitcairn Islands, Puerto Rico, Palestinian Territories, Portugal, Palau, Paraguay, Qatar, Réunion, Romania, Serbia, Russia, Rwanda, Saudi Arabia, Solomon Islands, Seychelles, Sudan, Sweden, Singapore, Saint Helena, Slovenia, Svalbard and Jan Mayen, Slovakia, Sierra Leone, San Marino, Senegal, Somalia, Suriname, São Tomé and Príncipe, El Salvador, Syria, Swaziland, Turks and Caicos Islands, Chad, French Southern Territories, Togo, Thailand, Tajikistan, Tokelau, Timor-Leste, Turkmenistan, Tunisia, Tonga, Turkey, Trinidad and Tobago, Tuvalu, Taiwan, Tanzania, Ukraine, Uganda, U.S. Minor Outlying Islands, United States, Uruguay, Uzbekistan, Vatican City, Saint Vincent and the Grenadines, Venezuela, British Virgin Islands, U.S. Virgin Islands, Vietnam, Vanuatu, Wallis and Futuna, Samoa, Kosovo, Yemen, Mayotte, South Africa, Zambia, Zimbabwe' check='is_empty' width=''] [/av_contact_field] [av_contact_field label='SUBJECT' type='text' options='' check='is_empty' width='' av_uid='av-1jkvk' multi_select='' av_contact_preselect='' sc_version='1.0' date_limit='' element_display='' headline_tag='h3'][/av_contact_field] [av_contact_field label='MESSAGE' type='textarea' options='' check='is_empty' width='' av_uid='av-pip8' multi_select='' av_contact_preselect='' sc_version='1.0' date_limit='' element_display='' headline_tag='h3'][/av_contact_field] [/av_contact] [/av_one_full][av_one_full first min_height='' vertical_alignment='av-align-top' space='' row_boxshadow='' row_boxshadow_width='10' 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Find Your Local Distributor

Regional Expertise for DOAS and Gas‑Analysis Systems

Select your region below to find the appropriate Airyx distributor. As a result, you benefit from local expertise and shorter response times.

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Europe

France

MEGATEC SAS Saint-Aubin, France Website: https://www.megatec.fr/ Contact: https://www.megatec.fr/contact Contact person: Fabrice Losbar

Greece

Polaris Environment Ltd Athens, Greece Website: http://www.polaris-environment.gr/

Romania (ICAD only)

APEL LASER Mogosoaia, Romania Website: https://www.apellaser.ro/

Romania (Open Path, SkySpec, WGA)

PHANOS Bucharest, Romania Website: https://phanossci.com/

Bulgaria & Western Balkans

STABO‑Tech Ltd. Stara Zagora, Bulgaria Website: http://stabo-tech.eu/ [/av_toggle] [av_toggle title='Asia' title_open='' tags='' title_pos='' slide_speed='' custom_id='' aria_collapsed='' aria_expanded='' av_uid='av-mn4fc78j' sc_version='1.0']

Asia

India

M&G Analyzer Systems Pune, India Website: https://www.mganalyser.com/

Vietnam

Reeco Science & Technology Co. Ho Chi Minh City, Vietnam Website: https://reecotech.com.vn/

Indonesia

PT JJExotranoz Inter Vania Cibubur, Indonesia Contact: Jefry KP

China

Li‑Ca Scientific Website: http://en.li-ca.com/ [/av_toggle] [/av_toggle_container] [av_textblock fold_type='' fold_height='' fold_more='Read more' fold_less='Read less' fold_text_style='' fold_btn_align='' textblock_styling_align='' textblock_styling='' textblock_styling_gap='' textblock_styling_mobile='' size='' av-desktop-font-size='' av-medium-font-size='' av-small-font-size='' av-mini-font-size='' font_color='' color='' background='bg_color' background_color='' background_gradient_direction='vertical' background_gradient_color1='#000000' background_gradient_color2='#ffffff' background_gradient_color3='' padding='' padding_sync='true' av-desktop-padding='' av-desktop-padding_sync='true' av-medium-padding='' av-medium-padding_sync='true' av-small-padding='' av-small-padding_sync='true' av-mini-padding='' av-mini-padding_sync='true' fold_overlay_color='' fold_text_color='' fold_btn_color='theme-color' fold_btn_bg_color='' fold_btn_font_color='' size-btn-text='' av-desktop-font-size-btn-text='' av-medium-font-size-btn-text='' av-small-font-size-btn-text='' av-mini-font-size-btn-text='' container_tag='' fold_timer='' z_index_fold='' id='' custom_class='' template_class='' av_uid='av-kruoztpl' sc_version='1.0' admin_preview_bg='']

Additional Regional Availability

We also provide local support in Hong Kong, Macau and Taiwan through additional regional partners. [/av_textblock] [/av_one_full][av_hr class='invisible' icon_select='yes' icon='ue808' font='entypo-fontello' position='center' shadow='no-shadow' height='50' custom_border='av-border-thin' custom_width='50px' custom_margin_top='30px' custom_margin_bottom='30px' custom_border_color='' custom_icon_color='' id='' custom_class='' template_class='' av_uid='av-le8jelfc' sc_version='1.0' admin_preview_bg=''] [av_one_full first min_height='' vertical_alignment='av-align-top' space='' row_boxshadow='' row_boxshadow_width='10' row_boxshadow_color='' custom_margin='' margin='0px' av-desktop-margin='' av-medium-margin='' av-small-margin='' av-mini-margin='' mobile_breaking='' mobile_column_order='' border='' border_style='solid' border_color='' radius='' min_col_height='' padding='' av-desktop-padding='' av-medium-padding='' av-small-padding='' av-mini-padding='' svg_div_top='' svg_div_top_color='#333333' svg_div_top_width='100' svg_div_top_height='50' svg_div_top_max_height='none' svg_div_top_flip='' svg_div_top_invert='' svg_div_top_front='' svg_div_top_opacity='' svg_div_top_preview='' svg_div_bottom='' svg_div_bottom_color='#333333' svg_div_bottom_width='100' svg_div_bottom_height='50' svg_div_bottom_max_height='none' svg_div_bottom_flip='' svg_div_bottom_invert='' svg_div_bottom_front='' svg_div_bottom_opacity='' svg_div_bottom_preview='' fold_type='' fold_height='' fold_more='Read more' fold_less='Read less' fold_text_style='' fold_btn_align='' column_boxshadow='' column_boxshadow_width='10' column_boxshadow_color='' background='bg_color' background_color='' background_gradient_direction='vertical' background_gradient_color1='#000000' background_gradient_color2='#ffffff' background_gradient_color3='' src='' src_dynamic='' background_position='top left' background_repeat='no-repeat' highlight='' highlight_size='' fold_overlay_color='' fold_text_color='' fold_btn_color='theme-color' fold_btn_bg_color='' fold_btn_font_color='' size-btn-text='' av-desktop-font-size-btn-text='' av-medium-font-size-btn-text='' av-small-font-size-btn-text='' av-mini-font-size-btn-text='' animation='' animation_duration='' animation_custom_bg_color='' animation_z_index_curtain='100' parallax_parallax='' parallax_parallax_speed='' av-desktop-parallax_parallax='' av-desktop-parallax_parallax_speed='' av-medium-parallax_parallax='' av-medium-parallax_parallax_speed='' av-small-parallax_parallax='' av-small-parallax_parallax_speed='' av-mini-parallax_parallax='' av-mini-parallax_parallax_speed='' fold_timer='' z_index_fold='' css_position='' css_position_location='' css_position_z_index='' av-desktop-css_position='' av-desktop-css_position_location='' av-desktop-css_position_z_index='' av-medium-css_position='' av-medium-css_position_location='' av-medium-css_position_z_index='' av-small-css_position='' av-small-css_position_location='' av-small-css_position_z_index='' av-mini-css_position='' av-mini-css_position_location='' av-mini-css_position_z_index='' link='' link_dynamic='' linktarget='' link_hover='' title_attr='' alt_attr='' mobile_display='' mobile_col_pos='0' id='' custom_class='' template_class='' aria_label='' av_uid='av-1d2xc' sc_version='1.0'] [av_textblock fold_type='' fold_height='' fold_more='Read more' fold_less='Read less' fold_text_style='' fold_btn_align='' textblock_styling_align='' textblock_styling='' textblock_styling_gap='' textblock_styling_mobile='' size='20' av-desktop-font-size='' av-medium-font-size='' av-small-font-size='' av-mini-font-size='' font_color='' color='' background='bg_color' background_color='' background_gradient_direction='vertical' background_gradient_color1='#000000' background_gradient_color2='#ffffff' background_gradient_color3='' padding='' padding_sync='true' av-desktop-padding='' av-desktop-padding_sync='true' av-medium-padding='' av-medium-padding_sync='true' av-small-padding='' av-small-padding_sync='true' av-mini-padding='' av-mini-padding_sync='true' fold_overlay_color='' fold_text_color='' fold_btn_color='theme-color' fold_btn_bg_color='' fold_btn_font_color='' size-btn-text='' av-desktop-font-size-btn-text='' av-medium-font-size-btn-text='' av-small-font-size-btn-text='' av-mini-font-size-btn-text='' container_tag='' fold_timer='' z_index_fold='' id='' custom_class='' template_class='' av_uid='av-mg812kqf' sc_version='1.0' admin_preview_bg='']

Global Distributor Network

Airyx works with a selected network of regional distributors who provide local expertise in air‑quality monitoring, DOAS‑based systems, wastewater gas analysis and real‑world emissions measurement.

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Worldwide Coverage at a Glance

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Your Nearest Airyx Partner

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Der Beitrag OPEN PATH HYBRID INSTRUMENT erschien zuerst auf Airyx GmbH.

OPEN PATH NH3 REMOTE SENSING

Airyx Admin — Thu, 23 Oct 2025 08:56:23 +0000

Airyx OPC‑UV3‑DL‑301 Open Path Ammonia Analyzer

Contact‑free NH₃ monitoring over 20–150 m open paths.

Description

The Airyx OPC‑UV3‑DL‑301 is an open path ammonia analyzer for contact‑free NH₃ monitoring. It measures along a free air beam over distances from 20 to 150 meters. As a result, it avoids sampling line losses and provides stable, path‑averaged concentration data.

Multi‑Path Operation

In addition, the system supports multi‑path operation. A motorized telescope head can redirect the beam between different retroreflectors. This enables spatially resolved ammonia measurements for agriculture, fence‑line monitoring and environmental air‑quality studies. Furthermore, remote alignment shortens setup time. Consequently, operators can perform field tasks more efficiently. Therefore, the OPC‑UV3‑DL‑301 delivers reliable performance in real‑world conditions.

UV DOAS Technology

The OPC‑UV3‑DL‑301 uses UV DOAS with a stable deuterium lamp. In addition, the temperature‑stabilized spectrometer ensures long‑term stability. As a long‑path DOAS instrument, it eliminates sampling lines and minimizes NH₃ surface losses.

Key Features

Accurate gas detection

The OPC‑UV3‑DL‑301 measures NH₃, NO and SO₂ using UV DOAS. In addition, the open‑path design avoids sampling artefacts and ensures representative concentration data.

Compact and flexible operation

One analyzer can monitor several measurement paths through motorized beam routing. As a result, the system adapts well to different field setups and test layouts.

Rugged and mobile

The IP64 enclosure includes heating and dew‑point monitoring. Consequently, the analyzer performs reliably in challenging outdoor environments.

Fast and simple deployment

Motorized self‑alignment enables quick setup. Furthermore, only minimal on‑site adjustments are required.

Calibration‑free technology

UV DOAS does not require calibration gas bottles and shows no long‑term drift. Therefore, operational cost and maintenance remain low.

Applications

The OPC‑UV3‑DL‑301 open path ammonia analyzer supports a wide range of real‑world applications. In many cases, it improves measurement quality and reduces installation effort. For example, it is used in the following areas:

Air‑quality and workplace‑safety monitoring around ammonia sources
Agricultural NH₃ emission monitoring from barns, manure storage and fields
Industrial emission and process monitoring for NH₃ and related gases
Fence‑line monitoring at industrial or agricultural facilities
Spatial NH₃ mapping over open paths up to 150 m
Real‑time ammonia concentration measurement in dynamic outdoor environments

Frequently Asked Questions

What is an open path ammonia analyzer?

An open path ammonia analyzer measures NH₃ along a free air path between the instrument and a reflector. This contact‑free method avoids sampling losses. As a result, it provides representative average concentrations over distances from 20 to 150 meters.

Which gases can the OPC‑UV3‑DL‑301 detect?

It primarily measures NH₃ and can also detect NO and SO₂ using UV DOAS technology. Consequently, the system supports multiple gas‑related applications.

Where is the system used?

Typical applications include agricultural ammonia monitoring, fence‑line measurements, industrial emission control and environmental research. In addition, it is suitable for long‑term field campaigns.

Does the analyzer require calibration gases?

No. DOAS technology is calibration‑free and does not require calibration gas cylinders. Therefore, operation becomes simpler and long‑term cost is reduced.

What distances can it cover?

The system supports open‑path measurements between 20 and 150 meters. Furthermore, it maintains accurate alignment using a motorized telescope head and retroreflector setup.

Optical and Measurement Specifications

These specifications describe the core optical setup and gas‑detection performance of the OPC‑UV3‑DL‑301 open path ammonia analyzer.

Parameter	Specification
Optics	Mirror telescope, 300 mm focal length
Detectable Gases	NH₃, NO, SO₂
Limit of Detection (at 100 m path length, 5 min averaging)	1 ppb (NH₃), 4 ppb (NO), 5.5 ppb (SO₂)
Path Length	Up to 150 m (retroreflector)
Time Resolution	Down to 1 minute
Compact Spectrometer	190–310 nm spectral range, temperature stabilized

Mechanical and System Specifications

The following parameters summarize the housing, system electronics and environmental design features relevant for field deployment.

Parameter	Specification
Motorization	Azimuth 0°–360°, Elevation −40° to 75°
Housing	IP64, internal heating, dew‑point monitoring
Control Unit	Integrated embedded PC (Windows 10 IoT)
Temperature Control	Active heating & cooling
Additional Sensors	Ambient temperature, pressure, housing dew point
Interfaces	LAN, WiFi, internal storage
Power Supply / Consumption	24 V, max. 80 W

DOWNLOADS

OPC-UV3-DL-301 DATASHEET

OPC-UV3-DL-301 Information Slides

PRODUCT AND ACCESSORIES LIST

Interested in open‑path ammonia monitoring? Contact us for a quote or technical consultation.

Contact Airyx Headquarters

How to Reach Our Team

Send Us a Message

Find Your Local Distributor

Regional Expertise for DOAS and Gas‑Analysis Systems

Select your region below to find the appropriate Airyx distributor. As a result, you benefit from local expertise and shorter response times.

Europe

France

MEGATEC SAS Saint-Aubin, France Website: https://www.megatec.fr/ Contact: https://www.megatec.fr/contact Contact person: Fabrice Losbar

Czech Republic, Slovakia & Lithuania

ENVItech Bohemia s.r.o. Prague, Czech Republic Website: https://www.envitech-bohemia.cz/ Contact: https://www.envitech-bohemia.cz/en/kontakt

Spain & Portugal

Green Light Research SLU Madrid, Spain Website: https://www.greenlightresearch.net/ Contact: https://www.greenlightresearch.net/contacto/

Italy

Luchsinger SRL Curno, Italy Website: https://www.luchsinger.it/ Contact: https://www.luchsinger.it/it/contatti/

Netherlands, Belgium, Luxembourg, Nordics

The Dutch Scientist 's‑Hertogenbosch, NL Website: https://www.thedutchscientist.com/ Contact: https://www.thedutchscientist.com/CONTACT/

Finland

HNU Nordion Helsinki, Finland Website: https://hnunordion.fi/ Contact: https://hnunordion.fi/yhteystiedot/

Greece

Polaris Environment Ltd Athens, Greece Website: http://www.polaris-environment.gr/

Romania (ICAD only)

APEL LASER Mogosoaia, Romania Website: https://www.apellaser.ro/

Romania (Open Path, SkySpec, WGA)

PHANOS Bucharest, Romania Website: https://phanossci.com/

Bulgaria & Western Balkans

Asia

India

M&G Analyzer Systems Pune, India Website: https://www.mganalyser.com/

Vietnam

Reeco Science & Technology Co. Ho Chi Minh City, Vietnam Website: https://reecotech.com.vn/

Indonesia

PT JJExotranoz Inter Vania Cibubur, Indonesia Contact: Jefry KP

China

Additional Regional Availability

Global Distributor Network

Worldwide Coverage at a Glance

Your Nearest Airyx Partner

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Der Beitrag OPEN PATH NH3 REMOTE SENSING erschien zuerst auf Airyx GmbH.

ICAD IN SITU HONO INSTRUMENT

Airyx Admin — Wed, 22 Jun 2022 07:33:58 +0000

ICAD-HONO/NO2-210L In‑Situ Monitor

The ICAD‑HONO/NO₂‑210L provides fast, direct and calibration‑free measurements of nitrous acid (HONO) and nitrogen dioxide (NO₂) using high‑resolution Iterative Cavity DOAS spectroscopy. The method quantifies both gases purely spectroscopically, without converters, reagent gases or external calibration standards.

The long effective absorption paths of the optical resonator enable sub‑ppb detection limits with 1‑second time resolution. Because the measurement is fully optical, the system shows no significant cross‑sensitivities, no humidity‑related artefacts and requires no sample drying. Integrated zero checks and temperature‑stabilised optics ensure long‑term stability with minimal maintenance effort.

With low power consumption and a compact 19″ rack design, the analyzer is suited for laboratory studies, stationary air‑quality monitoring and mobile field campaigns on vehicles or ships. A browser‑based graphical interface provides full access to data, system diagnostics and configuration via Wi‑Fi or LAN.

Operation Principle

The analyzer uses a closed‑path optical resonator that provides effective absorption paths up to 3 km. HONO and NO₂ concentrations are derived from Iterative Cavity DOAS (ICAD) spectroscopy in the 350–390 nm wavelength range.

The measurement is fully spectroscopic and direct. No converters, reagent gases or sample drying are required. Automatic zero checks and temperature‑stabilised optics ensure low drift and reliable operation under laboratory and field conditions.

Document Downloads

Product Overview

HONO Data Sheets

Configuration & Calibration

Additional Information

Key Applications & Advantages

Atmospheric HONO research

Sub‑ppb sensitivity supports nighttime chemistry and photochemical model validation.

Air‑quality monitoring

Direct HONO and NO₂ detection enables source attribution and urban process studies.

Laboratory studies

High precision and low drift support chamber experiments and instrument intercomparisons.

Mobile field campaigns

Low power demand, <5 s response time and robust design enable operation on cars and ships.

No calibration gas required

Quantification via molecular absorption cross sections; automatic zero ensures long‑term stability.

Robust and stable

Insensitive to humidity, temperature variations and vibrations; no sample drying needed.

Simple operation & connectivity

Browser‑based GUI with Wi‑Fi, LAN and RS232; supports multiple industrial communication protocols.

Specification Highlights

Parameter	Specification
Detection limits (60 s)	HONO: 0.08 ppb · NO₂: 0.16 ppb
Precision (60 s)	HONO: 0.04 ppb · NO₂: 0.08 ppb
Measurement ranges	HONO: 0–500 ppb · NO₂: 0–2000 ppb
Time resolution	1 second minimum
Response time	<5 s at 1.5 L/min
Cross sensitivities	No significant interference (H₂O, NOₓ, HCHO, O₃, COx, SO₂ …)
Temperature stability	<0.01 ppb/°C · Operating range –10 to +40 °C
Zero drift	Negligible zero drift with automatic zero check
Calibration	No HONO/NO₂ calibration gas required; optional gas‑free ICOM path‑length calibration
Power consumption	<40 W at 12 V
Connectivity	Wi‑Fi, LAN, RS232, OPC‑UA, analog voltage/current output
Housing & weight	19″ rack housing · <12 kg

Contact Airyx Headquarters

How to Reach Our Team

Send Us a Message

Find Your Local Distributor

Regional Expertise for DOAS and Gas‑Analysis Systems

Select your region below to find the appropriate Airyx distributor. As a result, you benefit from local expertise and shorter response times.

Europe

France

MEGATEC SAS Saint-Aubin, France Website: https://www.megatec.fr/ Contact: https://www.megatec.fr/contact Contact person: Fabrice Losbar

Czech Republic, Slovakia & Lithuania

ENVItech Bohemia s.r.o. Prague, Czech Republic Website: https://www.envitech-bohemia.cz/ Contact: https://www.envitech-bohemia.cz/en/kontakt

Spain & Portugal

Green Light Research SLU Madrid, Spain Website: https://www.greenlightresearch.net/ Contact: https://www.greenlightresearch.net/contacto/

Italy

Luchsinger SRL Curno, Italy Website: https://www.luchsinger.it/ Contact: https://www.luchsinger.it/it/contatti/

Netherlands, Belgium, Luxembourg, Nordics

The Dutch Scientist 's‑Hertogenbosch, NL Website: https://www.thedutchscientist.com/ Contact: https://www.thedutchscientist.com/CONTACT/

Finland

HNU Nordion Helsinki, Finland Website: https://hnunordion.fi/ Contact: https://hnunordion.fi/yhteystiedot/

Greece

Polaris Environment Ltd Athens, Greece Website: http://www.polaris-environment.gr/

Romania (ICAD only)

APEL LASER Mogosoaia, Romania Website: https://www.apellaser.ro/

Romania (Open Path, SkySpec, WGA)

PHANOS Bucharest, Romania Website: https://phanossci.com/

Bulgaria & Western Balkans

Asia

India

M&G Analyzer Systems Pune, India Website: https://www.mganalyser.com/

Vietnam

Reeco Science & Technology Co. Ho Chi Minh City, Vietnam Website: https://reecotech.com.vn/

Indonesia

PT JJExotranoz Inter Vania Cibubur, Indonesia Contact: Jefry KP

China

Additional Regional Availability

Global Distributor Network

Worldwide Coverage at a Glance

Your Nearest Airyx Partner

Need Technical Support?

Get Fast Assistance from Our Technical Specialists

Der Beitrag ICAD IN SITU HONO INSTRUMENT erschien zuerst auf Airyx GmbH.

ICAD IN SITU NOx INSTRUMENTS

Airyx Admin — Wed, 06 May 2020 13:04:42 +0000

ICAD NO₂–NOx–NO Analyzer Series 210

The ICAD Series 210 provides precise and fast in‑situ measurements of NO and NO₂ using patented Iterative Cavity DOAS spectroscopy. It directly detects NO₂ — without converter artefacts and without humidity interferences — and operates without the need for NO₂ calibration gas.

ICAD instruments offer very low noise, negligible zero drift and a wide dynamic range. This makes them suitable for both highly polluted roadside environments and ultra‑clean background locations. Thanks to low power demand and robust housings, ICAD systems can be used in stationary installations, industrial stacks, mobile vehicle platforms, ships and UAV‑based deployments.

Models equipped with integrated CO₂ sensors (DE versions) support real‑time plume chasing and NOx emission‑factor calculations for on‑road and off‑road applications.

Operation Principle

The ICAD analyzer uses a closed‑path optical resonator to achieve very long effective absorption paths. This enables highly sensitive detection of NO₂ based on its characteristic absorption features in the 430–480 nm wavelength range.

NO is measured via an internal ozone‑based, NOx‑free converter that converts NO to NO₂. Two parallel measurement cells — one for direct NO₂ and one for NO after conversion — ensure precise and drift‑free NO, NO₂ and total NOx quantification. The method is insensitive to humidity and requires no sample drying.

Document Downloads

All key ICAD documents grouped by category for quick access.

Product Overview

Data Sheets

Application Notes

Additional Information

Key Applications & Advantages

Air‑quality monitoring

Provides accurate NO₂ and NOx data for roadside stations, urban background locations and long‑term environmental monitoring.

Industrial emission control

Measures NOx from engines, combustion systems and industrial stacks without converter drift or cross‑sensitivities.

Mobile field measurements

Fast 1–3 s response enables vehicle plume chasing, ship‑emission studies and flexible outdoor deployment.

Background & research studies

L and DL versions achieve ppt‑level sensitivity for atmospheric chemistry and clean‑air measurements.

Calibration‑free operation

No NO₂ calibration gas required thanks to spectroscopic reference data and automatic zero checks.

Robust optical design

Temperature‑stabilised, vibration‑resistant optics ensure stable operation — no drying of sample air needed.

Mobile & rugged housings

IP64 M‑versions support outdoor use, vehicle installations and ship‑based measurements.

Emission‑factor analysis

DE models include CO₂ measurement for on‑road plume chasing and NOx emission‑factor calculation.

ICAD Model Comparison

Model	Detected species	Typical detection limit	Main features
ICAD‑NO₂‑210	NO₂	~0.09 ppb @ 60 s	Direct NO₂ monitoring for air‑quality stations and industrial applications.
ICAD‑NOx‑210D	NO + NO₂ → NOx	~0.09 ppb @ 60 s (NO₂)	Dual‑cell NOx analyzer with internal ozone converter for NO to NO₂ conversion.
ICAD‑NOx‑210DE	NO + NO₂ + CO₂	~0.09 ppb @ 60 s (NO₂)	Same as 210D, plus CO₂ measurement for emission‑factor and plume‑chasing studies.
ICAD‑NO₂‑210L	NO₂	15–50 ppt	High‑grade NO₂ analyzer for research and low‑background applications.
ICAD‑NOx‑210DL	NO + NO₂ → NOx	20–50 ppt (NO₂)	Highest‑precision NOx analyzer with ultra‑low detection limits.
ICAD‑NOx‑210DM / DE‑M	NO + NO₂ (+ CO₂, depending on model)	Equal to corresponding base model	Mobile IP64 housing for field, vehicle and outdoor use.

Housing Configurations

The ICAD Series 210 is available in several housing variants to support laboratory setups, stationary monitoring and mobile field applications.

19″ Rack Housing

Suitable for laboratory setups and stationary long‑term monitoring.

Mobile Outdoor Housing

Robust, weather‑resistant enclosure for extended outdoor field campaigns.

Custom Housing Options

Tailored mechanical designs for specialized scientific or industrial requirements.

Frequently Asked Questions

How does the ICAD analyzer detect NO₂?

ICAD measures NO₂ directly using cavity‑enhanced spectroscopy in the 430–480 nm region. This avoids converter artefacts and humidity interferences.

How is NO measured?

NO is converted to NO₂ using an internal ozone‑based, NOx‑free converter. Parallel cells measure direct NO₂ and converted NO for accurate NOx.

Does the ICAD analyzer require calibration gas?

No. ICAD uses spectroscopic reference data and automatic zero checks. Only the optional NO converter may require a periodic functional check.

What are the typical detection limits?

Standard models reach sub‑ppb sensitivity. L and DL versions achieve ppt‑level precision for background and research work.

Is the instrument affected by humidity or temperature changes?

No. ICAD is insensitive to water vapour and uses temperature‑stabilised optics for long‑term stability.

Can ICAD be used for mobile measurements?

Yes. IP64 M‑versions are designed for vehicle, ship and UAV‑based field deployments.

Which ICAD model is best for my application?

NO₂‑210 for NO₂ only, NOx‑210D for standard NOx, NOx‑210DE for NOx+CO₂ emission studies, and L/DL versions for high‑sensitivity research applications.

ICAD Model Recommendation Matrix

Quick visual guide to help identify the most suitable ICAD 210 model for your measurement needs.

Model	NOx (NO+NO₂)	CO₂	High Sensitivity (ppt‑level)	Mobile / IP64	Typical Application
ICAD‑NO₂‑210	–	–	–	–	Standard NO₂ monitoring (air quality, industry)
ICAD‑NOx‑210D		–	–	–	General NOx measurement (stationary & mobile)
ICAD‑NOx‑210DE			–	–	Plume chasing, emission factors, vehicle studies
ICAD‑NO₂‑210L	–	–		–	Research-grade NO₂ for background/ppt levels
ICAD‑NOx‑210DL		–		–	High-precision NOx research, test benches
M‑Versions (DM / DE‑M)		depending on model	same as base model		Mobile/IP64 field use, vehicles, ships, outdoor

Need help selecting the best model?
Contact our team — we’re happy to advise.

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Regional Expertise for DOAS and Gas‑Analysis Systems

Select your region below to find the appropriate Airyx distributor. As a result, you benefit from local expertise and shorter response times.

Europe

France

MEGATEC SAS Saint-Aubin, France Website: https://www.megatec.fr/ Contact: https://www.megatec.fr/contact Contact person: Fabrice Losbar

Czech Republic, Slovakia & Lithuania

ENVItech Bohemia s.r.o. Prague, Czech Republic Website: https://www.envitech-bohemia.cz/ Contact: https://www.envitech-bohemia.cz/en/kontakt

Spain & Portugal

Green Light Research SLU Madrid, Spain Website: https://www.greenlightresearch.net/ Contact: https://www.greenlightresearch.net/contacto/

Italy

Luchsinger SRL Curno, Italy Website: https://www.luchsinger.it/ Contact: https://www.luchsinger.it/it/contatti/

Netherlands, Belgium, Luxembourg, Nordics

The Dutch Scientist 's‑Hertogenbosch, NL Website: https://www.thedutchscientist.com/ Contact: https://www.thedutchscientist.com/CONTACT/

Finland

HNU Nordion Helsinki, Finland Website: https://hnunordion.fi/ Contact: https://hnunordion.fi/yhteystiedot/

Greece

Polaris Environment Ltd Athens, Greece Website: http://www.polaris-environment.gr/

Romania (ICAD only)

APEL LASER Mogosoaia, Romania Website: https://www.apellaser.ro/

Romania (Open Path, SkySpec, WGA)

PHANOS Bucharest, Romania Website: https://phanossci.com/

Bulgaria & Western Balkans

Asia

India

M&G Analyzer Systems Pune, India Website: https://www.mganalyser.com/

Vietnam

Reeco Science & Technology Co. Ho Chi Minh City, Vietnam Website: https://reecotech.com.vn/

Indonesia

PT JJExotranoz Inter Vania Cibubur, Indonesia Contact: Jefry KP

China

Additional Regional Availability

Global Distributor Network

Worldwide Coverage at a Glance

Your Nearest Airyx Partner

Need Technical Support?

Get Fast Assistance from Our Technical Specialists

Der Beitrag ICAD IN SITU NOx INSTRUMENTS erschien zuerst auf Airyx GmbH.

OPEN PATH REMOTE SENSING

Airyx Admin — Tue, 21 Apr 2020 14:20:42 +0000

OPEN PATH – ACTIVE REMOTE SENSING

OPEN PATH INSTRUMENTS CREATE A LIGHT PATH OF UP TO SEVERAL KILOMETERS LENGTH TO MEASURE ATMOSPHERIC TRACE GASES LIKE (NO₂, SO₂, O₃, HCHO, HONO, H₂O, BrO, IO) WITH HIGH PRECISION AND TIME RESOLUTION. TYPICAL APPLICATIONS ARE MONITORING OF EMISSIONS FROM TRAFFIC (E.G., AT SHIP ROUTES OR MOTORWAYS) OR FROM INDUSTRIAL FACILITIES, AS WELL AS SCIENTIFIC APPLICATIONS CONCERNING ATMOSPHERIC CHEMISTRY AND/OR GROUND-LEVEL VALIDATION OF SATELLITE REMOTE SENSING.

DOCUMENT DOWNLOADS

OPEN PATH DATA SHEET

OPEN PATH PRODUCT AND ACCESSORIES LIST

OPEN PATH ADVANTAGES

ACTIVE REMOTE SENSING OF ATMOSPHERIC GASES
SIMULTANEOUS DETECTION OF MULTIPLE SPECIES, E.G., NO₂, SO₂, O₃, HCHO, HONO, H₂O, BrO, IO
LOW MAINTENANCE
AUTOMATIC TELESCOPE ALIGNMENT, NO CALIBRATION REQUIRED, OPTIMIZED FOR OPERATIONAL APPLICATIONS
MONITORING ON KILOMETER SCALE
MEASUREMENT PATHS FROM 100 to 3000 METER PROVIDE HIGH REPRESENTATIVENESS AT MINIMAL INFLUENCE FROM POINT SOURCES
HIGH PRECISION
SUB PPB RANGE SENSITIVTY, TIME RESOLUTION OF SECONDS

Contact Airyx Headquarters

How to Reach Our Team

Send Us a Message

Find Your Local Distributor

Regional Expertise for DOAS and Gas‑Analysis Systems

Select your region below to find the appropriate Airyx distributor. As a result, you benefit from local expertise and shorter response times.

Europe

France

MEGATEC SAS Saint-Aubin, France Website: https://www.megatec.fr/ Contact: https://www.megatec.fr/contact Contact person: Fabrice Losbar

Czech Republic, Slovakia & Lithuania

ENVItech Bohemia s.r.o. Prague, Czech Republic Website: https://www.envitech-bohemia.cz/ Contact: https://www.envitech-bohemia.cz/en/kontakt

Spain & Portugal

Green Light Research SLU Madrid, Spain Website: https://www.greenlightresearch.net/ Contact: https://www.greenlightresearch.net/contacto/

Italy

Luchsinger SRL Curno, Italy Website: https://www.luchsinger.it/ Contact: https://www.luchsinger.it/it/contatti/

Netherlands, Belgium, Luxembourg, Nordics

The Dutch Scientist 's‑Hertogenbosch, NL Website: https://www.thedutchscientist.com/ Contact: https://www.thedutchscientist.com/CONTACT/

Finland

HNU Nordion Helsinki, Finland Website: https://hnunordion.fi/ Contact: https://hnunordion.fi/yhteystiedot/

Greece

Polaris Environment Ltd Athens, Greece Website: http://www.polaris-environment.gr/

Romania (ICAD only)

APEL LASER Mogosoaia, Romania Website: https://www.apellaser.ro/

Romania (Open Path, SkySpec, WGA)

PHANOS Bucharest, Romania Website: https://phanossci.com/

Bulgaria & Western Balkans

Asia

India

M&G Analyzer Systems Pune, India Website: https://www.mganalyser.com/

Vietnam

Reeco Science & Technology Co. Ho Chi Minh City, Vietnam Website: https://reecotech.com.vn/

Indonesia

PT JJExotranoz Inter Vania Cibubur, Indonesia Contact: Jefry KP

China

Additional Regional Availability

Global Distributor Network

Worldwide Coverage at a Glance

Your Nearest Airyx Partner

Need Technical Support?

Get Fast Assistance from Our Technical Specialists

Der Beitrag OPEN PATH REMOTE SENSING erschien zuerst auf Airyx GmbH.

INSTRUMENT RENTAL

Airyx Admin — Tue, 21 Apr 2020 03:03:03 +0000

INSTRUMENT RENTAL

USE THE CONTACT FORM BELOW TO SEND US A REQUEST FOR RENTAL

OPEN PATH HYBRID INSTRUMENT

HYBRID OPEN-PATH MAX-DOAS REMOTE SENSING.

WASTEWATER GAS ANALYSER

The Airyx WGA020 is a wastewater greenhouse gas analyzer for real‑time N₂O, CH₄, CO₂ and O₂ monitoring. Ideal for denitrification basins, emission reporting and continuous process optimisation in wastewater treatment plants.

OPEN PATH NH3 REMOTE SENSING

CONTACT-FREE NH3 REMOTE SENSING.

ICAD IN SITU HONO INSTRUMENT

Direct HONO and NO₂ analyzer with sub‑ppb sensitivity and no calibration gas — ideal for atmospheric research and air‑quality monitoring.

ICAD IN SITU NOx INSTRUMENTS

PRECISE AND MOBILE IN SITU NOx MONITOR.

SKYSPEC PASSIVE REMOTE SENSING

VERTICAL TRACE GAS PROFILES AND AEROSOL OPTICAL DEPTH.

OPEN PATH REMOTE SENSING

ACTIVE REMOTE SENSING UV-VIS SPECTROSCOPY.

RENT OUR INSTRUMENTS
WORLDWIDE SHIPPING
EASY OPERATION
REMOTE SUPPORT AVAILABLE

Contact Airyx Headquarters

How to Reach Our Team

Send Us a Message

Find Your Local Distributor

Regional Expertise for DOAS and Gas‑Analysis Systems

Select your region below to find the appropriate Airyx distributor. As a result, you benefit from local expertise and shorter response times.

Europe

France

MEGATEC SAS Saint-Aubin, France Website: https://www.megatec.fr/ Contact: https://www.megatec.fr/contact Contact person: Fabrice Losbar

Czech Republic, Slovakia & Lithuania

ENVItech Bohemia s.r.o. Prague, Czech Republic Website: https://www.envitech-bohemia.cz/ Contact: https://www.envitech-bohemia.cz/en/kontakt

Spain & Portugal

Green Light Research SLU Madrid, Spain Website: https://www.greenlightresearch.net/ Contact: https://www.greenlightresearch.net/contacto/

Italy

Luchsinger SRL Curno, Italy Website: https://www.luchsinger.it/ Contact: https://www.luchsinger.it/it/contatti/

Netherlands, Belgium, Luxembourg, Nordics

The Dutch Scientist 's‑Hertogenbosch, NL Website: https://www.thedutchscientist.com/ Contact: https://www.thedutchscientist.com/CONTACT/

Finland

HNU Nordion Helsinki, Finland Website: https://hnunordion.fi/ Contact: https://hnunordion.fi/yhteystiedot/

Greece

Polaris Environment Ltd Athens, Greece Website: http://www.polaris-environment.gr/

Romania (ICAD only)

APEL LASER Mogosoaia, Romania Website: https://www.apellaser.ro/

Romania (Open Path, SkySpec, WGA)

PHANOS Bucharest, Romania Website: https://phanossci.com/

Bulgaria & Western Balkans

Asia

India

M&G Analyzer Systems Pune, India Website: https://www.mganalyser.com/

Vietnam

Reeco Science & Technology Co. Ho Chi Minh City, Vietnam Website: https://reecotech.com.vn/