NDIR Gas Sensor Modules

smartGAS specializes in the development, production and calibration of NDIR gas sensors and are revolutionizing industrial applications worldwide.  smartGAS state-of-the-art sensors offer high accuracy and performance in any environment. But that is not all. As your trusted partner, they go beyond the NDIR range and offer a comprehensive range of gas analyzers that push the boundaries of technology and enable industry to achieve remarkable results.

Gas Detection

BasicEVO & TransmitterEVO

Gas Analyzers

Stationary Gas Analyzer Anarex & Portable Gas Analyzers

Gas Analysis

FLOWEVO, SILAREX, PAS & Paramagnetic O2

Gas Treatment and Accessories

Gas Sensor Calibration Tool Software, PREREX Gas Conditioning Systems

smartGAS gas sensors use infra-red absorption of gases (NDIR technology) and other technologies that are accurate, reliable and cost-efficient. They are suitable for an extremely wide variety of applications in process measuring technology and ambient air monitoring.

As a solutions provider for gas sensor technology, smartGAS can offer custom solutions.  Gases include:

CO & CO2
Acetone, n-butane, ethane, methane & propane
Refrigerant gases
NOX and other pollutant gases

These NDIR gas sensors work without moving parts or chemical reactants. This minimizes the maintenance work and thus the operating and servicing costs compared with other gas sensor technology. These gas sensors are environmentally friendly, long-lasting and reliable.  You too can benefit from smartGAS’ expertise!

New from smartGAS:

• The SYMECO approach from smartGAS allows you to use different NDIR sensors from the FLOWEVO line. As an example, you can measure CO2 in % and CO in ppm with the same interface.
• More ranges for CO measurement are available in their FLOWEVO series: 2000 ppm, 5000 ppm, 10 vol.-%, 50 vol.-% & 100 vol.-%
• smartGAS’ new NDIR Broadband refrigerant sensors from smartGAS provide a flexible solution for measuring multiple gases in one set-up. The broadband refrigerant sensor is calibrated to 2000 ppm R134a, but is also great for measuring R125, R404a, R407a and R410a. You select the gas to be measured in your application and apply the appropriate conversion factor.
• The  SILAREX sensor platform allows multiple gases to be measured in the same module. It also has pressure compensation.

The functional principle of smartGAS sensors & modules

The IR principle uses the individual absorption spectrum of the gas being measured. The exact gas concentration is determined through precise quantitative analysis of this spectrum. Because of this, their gas sensors function very selectively and are virtually unaffected by other environmental factors or gases.

The functional principle of our gas sensors: long-term stability and performance thanks to NDIR technology from smartGAS

As all measured gases absorb in varying spectral ranges, a kind of “fingerprint” arises that allows very selective characterization without cross-sensitivities. Gas sensors from smartGAS possess an integrated electronic evaluation system that displays a simple to use concentration signal to you as the user and reliably compensates for all drift and temperature influences.

Gas sensors for the process measuring technology

The precise and selective gas sensors from smartGAS are distinguished by simple handling and cost efficiency – even in demanding applications. Knowledge of the internal flows and current state of a process is essential for the control and cost-efficient operation of plants. If measurements are lost, or if they cannot be used, this can lead to high costs. We possess this knowledge and incorporate it in your application as a solution. Our optimized optical components, in combination with the adapted software, ensure high long-term stability and performance – for your application too. In contrast to chemically-based gas sensors, their products are not only lower-maintenance and longer lasting, but also detect even chemically inactive gases quickly and reliably.

» Analysis Sensors for Process Measuring Technology

Gas sensors for ambient air monitoring

The monitoring of gas concentrations in the ambient air requires especially long-term stable and reliable gas sensors. The measurements are usually carried out 24/7 – 365 days in the year. Reliability and insensitivity to external influences therefore make gas sensors from smartGAS the first choice for your measuring task.

Precalibrated, Compact NDIR Gas Sensor Modules

FLOW^EVO Long Path Modules for Process Measurement

NDIR sensors from smartGAS offer many advantages for successful process measurement and are therefore ideal for use in process control. They have a large spectrum of measurable gases and are especially convincing where it is important to have the utmost precision and reliability. Different versions can be very easily combined, also facilitating complex measuring tasks. All smartGAS sensors are designated by low detection limits, very small drift, a large temperature range and a fast response time and markedly low operating and maintenance costs.

• “Ready to use” NDIR sensors
• Low maintenance
• Low detection limits
• Selectivity against influencing gases
• Flexible interfaces
• Temperature and drift compensated
• Compact construction

FLOW^evoTechnical Notes
FLOW^evo and FLOW^evo PLUS Dual Channel High Performance and Sensitivity Gas Sensors

Our NDIR sensors in the FLOW^evo series combine measuring precision with compact design and simple handling. We have minimized sizes considerably, without having to make compromises in terms of performance.

Product	Gases	Sensitivity - ppm	Size
Long Path Modules	Many*	High	156 x 30 x 37 mm
F3-032205	C2H4 Ethylene	20ppm / 2000ppm
F3-042505	CH4Methane	50ppm / 5000ppm
F3-222108	CO Carbon Monoxide	0.2% / 100%
F3-222205	CO Carbon Monoxide	20ppm / 2000ppm
F3-212205-05000	CO2 Carbon Dioxide	8ppm / 2000ppm
F3-272504-05000	N2O	500ppm
F3-600503	SF6	0.5ppm / 50ppm

* Gases include acetone, n-butane, CO, CO2, ethane, methane, propane, refrigerant gases & NOX and other pollutant gases.

FLOW^EVO Short Path Modules for Process Measurement

Product	Gases	Sensitivity - ppm	Size
Short Path Modules	Many*	Medium	76 x 30 x 37 mm
F3-222207	CO Carbon Monoxide	0.07% / 20%
F3-212506-05000	CO2 Carbon Dioxide	0.03% / 5%
F3-212207-05000	CO2 Carbon Dioxide	0.07% / 20%
F3-600105	SF6	8ppm / 1000ppm
F3-600108	SF6	0.3% / 100%

* Gases include acetone, n-butane, CO, CO2, ethane, methane, propane, refrigerant gases & NOX and other pollutant gases.

BASIC^EVO Sensors for Diffusion Applications

Diffusion sensors for ambient air monitoring are available from smartGAS as the BASICEVO series. Just like all smartGAS-sensors are distinguished by low detection limits, very slight drift, a large temperature range, a fast response time and low maintenance costs. The BASIC^evo series is therefore the optimal solution for all applications in which an ambient air sensor should be reliable and at the same time simple in its handling.

• “Ready to use” NDIR sensor
• Low maintenance
• Low signal drift
• Long lifetime
• Selectivity against influencing gases
• Compact construction
• Gas inlet by diffusion

DiffusionTechnical Notes

Simple, compact, everything on board – BASIC^EVO offers the perfect basis when it comes to cost-efficient ambient air monitoring – without compromises in the performance!

Product	Gases	Sensitivity - ppm	Size
Diffusion Modules	Many*	Low	70 x 60 x 37 mm
B1-040446	CH4Methane	1% / 4.4%
B3-212207-03000	CO2 Carbon Dioxide	0.01% / 20%
B3-272504-03000	N2O	500ppm
F3-600108	SF6	3% / 100%

If you need flexibility in choosing the refrigerant gas you want to measure, then the BASIC^evo Pro Broadband is the module for you.

• Measure 20 different gases with the one sensor
• Non Dispersive Infra-Red (NDIR) module, Dual beam / Reference channel
• Has an Internal calibration curve for each Freon gas
• Easy to set the Target Gas
• You pick the Measurement Range – 2000 ppm or 1000 ppm

If you do not need this flexibility, use one of the fixed Freon BASIC^evo Sensor Modules listed below.

Product	Gases	Sensitivity - ppm	Size
Refrigerant Gas
BASICevo Pro Broadband	20 Refrigerant Gases	1 ppm (1000 or 2000 range)
B3-702105-03000	R22	1000	70x60x37 mm
B3-702205-03000	R22	2000
B3-862205-03000	R23	2000
B3-882205-03000	R32	2000
B3-732105-03000	R123	1000
B3-732205-03000	R123	2000
B3-722105-03000	R125	1000
B3-722205-03000	R125	2000
B3-712105-03000	R134a	1000
B3-712205-03000	R134a	2000
B3-742105-03000	R404a	1000
B3-742205-03000	R404a	2000
B3-752105-03000	R407a	1000
B3-752205-03000	R407a	2000
B3-802105-03000	R407c	1000
B3-802205-03000	R407c	2000
B3-822205-03000	R407f	2000
B3-762105-03000	R410a	1000
B3-762205-03000	R410a	2000
B3-832205-03000	R448a	2000
B3-842205-03000	R449a	2000
B3-872205-03000	R452a	2000
B3-892205-03000	R455a	2000
B3-772105-03000	R507	1000
B3-772205-03000	R507	2000
B3-852205-03000	R513a	2000
B3-912205-03000	R515b	2000
B3-902205-03000	R123zd	2000
B3-782105-03000	R1234yf	1000
B3-782205-03000	R1234yf	2000
B3-812105-03000	R1234ze	1000
B3-812205-03000	R1234ze	2000
B3-712105-03800	Broadband	1000
B3-712205-03800	Broadband	2000

* Gases include acetone, n-butane, CO, CO2, ethane, methane, propane, refrigerant gases & NOX and other pollutant gases.

SILAREX Multiple Gas Solutions

Applications such as emission measurement require the simultaneous analysis of multiple gases like CO2, NO and SO2. SILAREX gas sensors have been developed for this application case and enable parallel concentration measurement of up to three measuring gases with one single NDIR gas sensor. The cross-sensitivities of the individual gases are compensated directly inside the SILAREX sensor, providing the user with fully prepared and corrected measuring values via Modbus ASCII / RTU for further processing. Compared to measuring with three individual sensors, the advantages are obvious: Only one sensor needs to be calibrated and maintained; varying sample preparation, different accuracies or life cycles of the sensors do not need to be considered.

• Measure up to three gases (or 3 gas concentrations) simultaneously with one setup with one of the 4 channels still used as a reference.
• Cross-sensitivity is calculated on-board.
• Pressure and temperature are compensation on board.
• Ready to use, calibrated shortening your development time.
• NDIR technology for complex measurement tasks.

Product	Gases	Sensitivity - ppm	Size
Silarex Module
Silarex Multi Channel	Multi Gas	High	233 x 31 x 37mm

SILAREX and SILAREX PLUS Quad Channel High Performance and Sensitivity Gas Sensors

Standard Products

Silarex 3 Channel
CO2 20 Vol.-%, NO 2000 ppm, SO2 1000 ppm I SX-300003-00000
CO2 3-ch low range I SX-300011-00000

Silarex 2 Channel
CO2 20 Vol.-%, CO 1000 ppm I SX-200002-00000
CO2 20 Vol.-%, CO 10.000 ppm I SX-200004-00000
CO2 20 Vol.-%, CO 500 ppm I SX-200009-00000
CO2 20 Vol.-%, CO 2000 ppm I SX-200010-00000

PAS – Photoacoustic Sensors

The PAS sensor is based on the principle of photoacoustic spectroscopy (PAS), one of the most sensitive measuring methods for detecting gases. With even higher precision and reliability, the PAS detects gas volumes minimum measuring in ppm range. The sensor module can control all processes and components itself, an external control is not necessary. The PAS sensor is characterized by a very low zero point drift and automatically compensates the water vapor cross-sensitivity.

• Low drift
• Low maintenance
• Low detection ranges
• Designed for 24/7 operation

PAS – The sensor with a measuring method that detects even the smallest gas concentrations

Product
PAS - Photoacoustic Sensors
C2H4
1000 ppm | PA-032105-00000
200 ppm | PA-032204-00000
NO
100 ppm | PA-2321104-00000
NH3
200 ppm | PA-242204-00000

Transmitter ^EVO

TRANSMITTER^EVO – the OEM customer solution from smartGAS

The TRANSMITTER^EVO is a device for the stationary, continuous monitoring of gas concentrations in the ambient air. The measuring of gases has long since become standard in many applications. In the past, customers and developers were previously often forced to adapt their applications and requirements to the gas measuring technology that was available at the time. smartGAS wants to change this.

This TRANSMITTER^EVO was developed for customers where device development is not economical because the volumes are smaller. With the TRANSMITTER^EVO, smartGAS offers the option of adapting the front display to suit the customer’s design and adapting the device to his application by combining it with gas sensors from the BASIC^EVO series diffusion sensors. This means that you receive “your custom device” calibrated and ready to go!

• “Ready to use” gas transmitter
• (0)4 – 20 mA
• Modbus ASCII / RTU
• 12 – 24 V DC input voltage
• All sensors from the BASICEVO series diffusion sensors can be used
• Front display can be customized to customer requirements

Product	Product
Refrigerants	SF6 - Sulfur Hexafluoride
R22	1000 ppm | T4-602105-03000
1000 ppm | T4-702105-03000	1500 ppm | T4-602155-03000
2000 ppm | T4-702205-03000
R123
1000 ppm | T4-732105-03000
2000 ppm | T4-732205-03000
R125
1000 ppm | T4-722105-03000
2000 ppm | T4-722205-03000
R134a
1000 ppm | T4-712105-03000
2000 ppm | T4-712205-03000
R404a
1000 ppm | T4-742105-03000
2000 ppm | T4-742205-03000
R407a
1000 ppm | T4-752105-03000
2000 ppm | T4-752205-03000
R407c
1000 ppm | T4-802105-03000
2000 ppm | T4-802205-03000
R407f
2000 ppm | T4-822205-03000
R410a
1000 ppm | T4-762105-03000
2000 ppm | T4-762205-03000
R448a
2000 ppm | T4-832205-03000
R449a
2000 ppm | T4-842205-03000
R507
1000 ppm | T4-772105-03000
2000 ppm | T4-772205-03000
R513a
2000 ppm | T4-852205-03000
R1234yf
1000 ppm | T4-782105-03000
2000 ppm | T4-782205-03000
R1234ze
1000 ppm | T4-812105-03000
2000 ppm | T4-812205-03000
Broadband Refrigerants
2000 ppm | T4-712205-03800

4 Series NDIR (Non Dispersive InfraRed) Sensors

These 4 Series NDIR gas sensors are:

• They are Compact (20mm D x 17mm H) and use an Industry Standard Package (4 Series).
• Highly Sensitive and can detect even trace amounts of gas in the environment. They can measure gases in parts per million (ppm).
• Like other NDIR sensors, the 4 Series Sensors are Highly Specific (Specificity) to the gas they are designed to detect.

They have a microprocessor with embedded intelligent software, which handles signal acquisition, processing, and output. The NDIR sensor simultaneously performs environmental temperature compensation, corrects response non-linearity and offers multiple output options.

Size	Product	Gas	Range	Resolution	Response	Part No.
4 Series	4CO2-5000	CO2 Carbon Dioxide	0-5000ppm	1%	≤30s	096-0100-000
	EOC-GDM-CH4-MH-441D	CH4 Methane	0 - 10%	0.01%	≤30s	EOC-GDM-CH4-MH-441D

ANAREX Gas Analyzers

ANAREX Gas Analyzers for emission measurement and process control
(NDIR, PAS and many more sensors)

The smartGAS gas analyzers are high performance solutions for a variety of industrial gas measurements. Applications range from process measurement technology and emissions to fruit ripening. The ANAREX product family provides very accurate and stable measurement performance. Its customer-friendly interfacing with touchscreen and simple sensor calibration.  The ANAREX Gas Analyzer is designed as a multi-gas analyzer and bench unit 19″ rack mountable. The ANAREX mini portable units are self-contained analyzers. Some designs are  battery operated.

• Multigas analyzer
• Highly stable measurement performance
• Easy operation via touch screen
• Easy sensor calibration
• The bench unit fits in a 19” rack.
• The “ANAREX mini Gas Analyzer” portable units have may of the same capabilities as the bigger ANAREX Gas Analyzers.
• Analogue or digital output

ANAREX Technical Notes

Product
ANAREX Multigas Analyzers
ANAREX Gas Analyzer Capabilities
CO2_CO I AX-212200-00000 ANAREX Gas Analyzer
C2H4_CO2_O2 I AX-032150-00000 ANAREX Gas Analyzer
ANAREX mini Gas Analyzer Capabilities

Portable Multi Gas Analyzers – PGA 110/min

smartGAS has combined multiple gas detection in the PGA 110/mini Portable Instrument with:

• Multiple Gases with up to 3 Gases
• Internal Cross compensated
•  4.9-inch HD color display
•  Internal Data Storage
• Easy USB export & Bluetooth (optional)
•  Long life lithium battery, with IATA air transport certification
• Weight 6~10 kg

PGA Technical Notes

Handheld Portable Multi Gas Analyzers – PGD alpha

smartGAS has combined multiple gas detection in the PGD alpha Handheld Portable instrument for handheld applications like monitoring fumigation or hazardous industrial gases. Features include:

• User friendly design one hand operation
• Up to 4 channels of NDIR, Electrochemical, PID, Catalytic Combustion, etc.
• Long life lithium battery, with IATA air transport certification
•  4.3 inch screen displays the data
• Gas inlet and outlet on the back providing safety during operation
•  Built in pump
• Data storage of 100,000 data set storage capacity
• Size – 21.7L x 9.2W x 8H cm; Weight – 850g

PGD Technical Notes

PREREX Gas Conditioning Systems

Complete gas conditioning system for filtering and drying the sample gas.

Most gases in process measurement technology do not come from clean environments and do not have a clearly defined composition. Combustion exhaust gases, biogas or ambient gases are always contaminated with dust or moisture. The smartGAS PREREX is an ideal solution for application optimized sample gas conditioning.

The PREREX gas conditioning system is a powerful all-in-one solution that combines all the necessary components in one housing. The compact unit generates an extremely precise and long-term stable dew point, even with changing loads, and offers optimum operational reliability. This complete solution is designed for installation in a 19″ rack.

PREREX impresses with its maintenance-friendly design and safe operation. Thanks to selected components and little dead volume, PREREX ensures a fast response time.

Product features:

• Complete solution for a large number of applications
• Reliable and reproducible measurement results
• Optimum operational safety due to self-monitoring
• Extremely precise dew point with long-term stability
• Fast response time due to low dead volume
• Very low resolution rates
• Continuous condensate removal
• Low maintenance operation
• Easy to maintain design

Datasheet for PREREX Gas Conditioning Systems

Pest Control Gas

Product	Gases	Sensitivity - ppm	Size
Pest Control Gas
Gas Module	SO2F2 Sulphuryl Fluoride	4%

Gas Sensor Calibration Tool Software

smartGAS has updated the Gas Sensor Calibration Tool Software with the following new features.

• More diagnostics
• Export of data sets for remote diagnosis by smartGAS
• Reset to factory settings
• Graphic concentration displays
• For all B3 and F3 sensors with / without Connect Interface
• It is free. Download it, try it out and use it. The new tool no longer requires a license. Email us for more info and a download link.

Gas Calibration Adapter

Item #: Z7-000001

Gas adapter for targeted gassing during calibration of Transmitter^EVO or Z7-000002 ModulBox

Product Features:

• Includes hose and screw connection

Application Notes:

Why Use NDIR Gas Sensors
Precision NDIR and TDLAS Gas Measurement
Refrigerant Gas Monitoring Solutions
Monitoring the Argon Welding Gases
Monitoring Nitrous Oxide (N2O)
Applications for monitoring Nitrous Oxide (N2O)
smartGAS Acccuate & Reliable Gas Sensor Modules go to Mars
Precision Process Management
Emissions Measurement
Food Storage – Checking the Ripening Process with CO2 & Ethylene Sensors
Measuring Biogases – CO2 and CH4
More precise measurement of SF6
Gas Sensor Calibration Tool Software
Measuring Water Quality
Flexibility with NDIR Refrigerant Gas
Water Quality, TOC Application Note
Steel Application Note
Biogas Application Note
N2O Wastewater Application Note
N2O Medical Application Note
N2O Emission Application Note
Fumigation Application Note
CO2 Capturing Application Note
Gases vs Application Note
FLOWevo and SILAREX High Performance and Sensitivity Gas Sensors

Low Cost NDIR Modules

NDIR Module Options:

Quality Micro Pumps for NDIR Gas Sensor Modules