Servomex - a Spectris Company

- Model HFID - Safe Area Gas Analyzers



High-performance analysis of total hydrocarbons (THC), methane (CH4) and non-methane hydrocarbons (NMHC). The SERVOPRO HFID heated total hydrocarbon analyzer utilizes a highly sensitive Flame Ionization Detector (FID) for measuring volatile hydrocarbon concentrations in vehicle/engine certification testing and industrial gas stack emissions monitoring applications. This ensures real-time, on-stream gas stream analysis, unlike gas chromatography (GC) based analyzers, which require batch sampling.

To measure methane (CH4) and non-methane hydrocarbons (NMHC), an oxidation catalytic converter is used to allow methane to pass through untouched to the FID detector, while all other hydrocarbons are oxidized to CO2. This non-methane cutter (NMC) assembly contains the heated catalyst, which removes all but the methane content of the sample gas. The cutter temperature is set to about 250°C, which is well below the oxidation temperature of CH4, and is optimized during factory calibration. 

The oven temperature of the HFID analyzer for the gas sample itself is adjusted at the factory to be controlled at 190°C to ensure that any heavy hydrocarbons (C5 and above) present in the emission stream are kept in the gas phase. The sample gas is maintained at this elevated temperature until it exits the FID bypass, thus preventing any loss of hydrocarbon concentration in the sample due to condensation. The heated sample gas is maintained at this temperature by a self-contained internally adjustable temperature oven.

  • Four user-definable measurement ranges, reconfigurable in the field
  • A comprehensive THC, CH4 and NMHC solution for diverse applications
  • Remote operation via discrete logic, RS232C or TCP/IP communications
  • 100% H2 Fuel version available
Easy to use
  • Intuitive, engineer-friendly interface and installation
  • Factory calibrated for easy set-up
  • Automatic calibration and ranging
Low cost of ownership
  • High-accuracy FID technology for maximized uptime
  • Cost-effective and simplified on-going maintenance
  • Electronic flow control for reduced operational costs
Unrivalled performance
  • Heated oven for “hot/wet” sampling and maximum stability 
  • Superior sensitivity and response time
  • Automatic fuel/air shutoff for increased safety
Benchmark compliance
  • 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 configuration available

  • 482.6mm (19”) wide x 133.35mm (5.25”) high x 584.2mm (23”) deep 
  • 22.73kg (50lb)
  • 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 configuration available
  • 100% H2 Fuel version available

  • Continuous real-time emissions monitoring (CEMS)
  • Vehicle/engine emissions certification testing
  • Compliance monitoring and testing
  • EPA Method 25A compliant
  • VOC abatement
  • Scrubber efficiency

Ensure your SERVOPRO HFID 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.

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