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Key features
  • Measures 0-3 to 0-3,000ppm full scale NO/NO2/NOx
  • Heated version available
  • Low flow sampling at 0.6 lpm
  • Versatile solution for emissions monitoring and testing
Easy to use
Low cost of ownership
Unrivalled performance
Benchmark compliance

The versatile SERVOPRO NOx gas analyzer uses the time-proven Chemiluminescence detection method to measure NO or NO/NO2/NOx concentrations all in one analyzer – perfect for continuous monitoring for industrial stationary sources emissions or ambient air, and fast enough for emissions testing in engines and vehicles. 

The analyzer uses ozone (O3) which reacts with the nitric oxide (NO) in the sample stream, yielding an excited state of NO2 (NO2*) plus oxygen (O2). Excited NO2* will return to a more stable ground state, and in the process, produces a chemiluminescent light, the intensity of which is proportional to the concentration of NO that was converted into NO2 within the reaction chamber. A photodiode detector is used to measure the light and reports out a ppmv NO value. 

In order to produce a total NOx signal, the sample is first routed through an internal converter that turns any NO2 in the sample into NO. This stream is then subjected to O3 gas and the resultant reaction is now directly proportional to the total NOx concentration. The analyzer then makes an internal calculation, deriving the final NO2 concentration from the NOx converter efficiency. 

  • 133.35mm (5.25”) high x 482.6mm (19”) wide x 584.2mm (23”) deep 

  • 21.8kg (48lb) 
  • CE Mark and ETL listed 
  • Conforms to UL STD 61010-1
  • Certified to CAN/CSA C22.2 STD 61010.1
  • EPA 40 CFR Part 1065/1066, Euro VI HD and Euro 6 LD compliant configurations available
Key Applications
  • Continuous emissions monitoring (CEMs)
  • Ambient air monitoring
  • Scrubber efficiency
  • Combustion efficiency
  • Turbine/generator feedback control
  • Process gas analysis
  • Vehicle emissions
  • Engine testing
  • SCR/SNCR feedback control
Service and Spares

Ensure your SERVOPRO NOx analyzer delivers optimum performance with Servomex Service Network.

Through our global network of engineers and service centers, we provide complete lifetime support for your analyzer. Our services range from installation and commissioning to supplying high quality spares and arranging scheduled servicing: visit our Service Network pages to find out more.

Global Service Network