NOx converter - NO2/NO - ZDL

Innovative NO2-to-NO converters enable a gas analyser, which typically measures only NO, to accurately determine the total emission of nitrogen oxides (NOx which is the sum of NO and NO2) by converting the existing level of nitrous oxide in exhaust flue gas into that of a single form - namely nitrogen monoxide.

Discover the NOx converter - NO2/NO Converter - ZDL


NOx converter - ZDL

nox converter zdl

NO2 to NO converter for NOx measurements.

Combustion and power plants, waste-to-energy and incineration, steel mills, furnace control, continuous emission monitoring systems, research laboratories and other processes.


NOx Converter - NO2/NO Converter for flue gas analyser

Features of the NOx converter

Data general specifications

How does the NO2 to NO converter work?

NO2 to NO converters use a catalytic process to transform nitrogen dioxide NO2 into nitrogen monoxide (NO). The converter consists of a ceramic monolith coated with a catalytic material. To be converted, the gases pass through small reactors filled with the catalyst. These reactors are kept at a constant temperature by a temperature controller PID, to ensure optimum operation.

 When to use an NO2 to NO converter?

To accurately measure NOX, an NDIR gas analyzer that only measures NO must be equipped with a converter upstream to transform the readings of both NO and NO2.
To effectively measure total NO2 concentrations, a NO2-to-NO converter must have the capability to record at least 95% of all possible expected amounts of NO2.

 Service

Fuji Electric offers a full range of services to support your gas analyser applications.

Contact us tointegrate youranalyser gas system and get a turnkey solution.

NO2/NO converter specifications

Catalyst features integrated into the NO2/NO converter

Variable volume: Available in 2, 4 and 6 cm3 versions, the catalytic converter offers flexibility adapted to the specific needs of different environments and applications.

Predictive replacement cycle: The replacement cycle of around 12 months, based on standard conditions with an oxygen (O2) concentration of 5% and nitrogen dioxide (NO2) of 10 ppm, guarantees proactive maintenance.

Advanced Temperature Control

The converter is equipped with a temperature controller PXE4 offering precise adjustment to 220°C, monitored by a type K thermocouple. This function ensures optimum temperature for the conversion process.

Quality Materials

Materials in contact with gases, such as ceramic, Viton, glass wool and SS316 stainless steel, guarantee exceptional resistance and durability, in compliance with ENI 5267 / QAL1 environmental standards.

High conversion rate

With a conversion rate of 95% or more, the NO2/NO converter meets the most stringent standards, ensuring efficient elimination of unwanted components from exhaust gases.

Optimal Sampling Conditions

The system operates at a flow rate of 0.5 l/min, guaranteeing optimal dust- and condensate-free sampling conditions at temperatures below 150°C.

Adaptability and Reliability

Powered by a 110 to 240 Vac, 50/60 Hz power source, with a consumption of around 85 VA, the Fuji Electric converter offers maximum adaptability to different industrial configurations. In addition, the temperature alarm output ensures continuous monitoring.

Compact dimensions and light weight

With dimensions of 212(H) x 148(W) x 130(D) mm and a weight of 1.2 kg, the converter is compact, making it easy to integrate into a variety of spaces and systems.


Accurately determine the total concentration of nitrogen oxides with the NOx converter - NO2/NO Converter - ZDL!