THE Mobile Stack Testing Solution; All you need is the VE-112, a stack prob e without filter, a heated sample line, a sample cooler and your required selection of self extracting analyzers (CO, CO2, NO/NOX, SO2, O2, or others.
The PreFilter® VE-112 is an ideal interface and sample filter to provide sample from one source via heated sample train to up to five (5) self extracting gas

The VE-112 is a highly efficient, all heated and low pressure drop filter for removing solids from a gaseous sample. The Model VE 112 utilizes an all stainless steel 2 micron large surface mesh filter to be back-purged with dry compressed air or nitrogen. Heated to 190°C to prevent the loss of high condensing hydrocarbons or water.
When the sample filter is back-purged, at the same time the heated sample line and probe are fully purged too.


  • Made in Germany
  • The VE 112 is the ideal solution to be used as the main supply module in a multi component Continuous Emissions Monitoring system (CEM).
  • Only one heated sample line from the source is needed to provide sample for many other emissions analyzers, all at ambient pressure conditions.
  • One sample inlet with the capability to couple the heated sample line inside the heated oven. Absolutely no cold spot.
  • One major FID sample outlet with the capability to couple the heated sample line inside the heated oven. Absolutely no cold spot.
  • Four additional heated sample outlets for other gas analyzers for example CO, CO2, No/Nox, SO2, O2, or others.
  • All sample wetted components and parts are housed inside the heated oven chamber
  • Oven temperature digitally controlled at 90°C (374°F)
  • Permanent heated stainless steel sample filter, 2 μm mesh, large surface
  • Sample filter back-purge system allows sample filter to be cleaned without dismantling
  • At any time when the sample filter is cleaned, the sample line and sample probe are always cleaned too.
  • Programmable automatic sample filter back-purge system optional
  • Remote control for all valve operations as sample, calibrate and sample filter back-purge is standard
  • Integrated heated sample pump
  • Microprocessor PID type temperature controller for FID oven


  • The VE 112 is a Complete Sample Interface Solution for continuous stack gas emissions monitoring systems with one THC monitor, one sample conditioner with all NDIR monitors and up to four additional or sensors
  • Stationary or transportable CEM’s for stack gas analysis
  • Diesel or Gasoline raw exhaust analysis and Stationary diesel engines exhaust analysis
  • Removing particles from a gaseous sample where condensation of heavy hydrocarbons is not desirable

Heated Sample Filter and Sample Interface Heated PreFilter® VE 112

Heated Sample Interface PreFilter VE112

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About us / Über uns

J.U.M. Engineering has been manufacturing fast responding, high quality heated total hydrocarbon FID analyzers and non methane hydrocarbon FID gas analyzers for industrial, environmental, stack testing, OEM, aeronautic, research and medical applications since 1973.

J.U.M. worldwide

J.U.M. worldwide


J.U.M. Engineering Ges.mb.H.
Heated FID, Heated FID Analyzer, Hydrocarbon Analyzer, Total Hydrocarbon Analyzer, FID Monitor, Continuous Emissions Monitoring System, CEM FID, VOC Analyzer, J.U.M. Engineering GmbH - VOC Monitoring, TVOC Monitoring, HFID, HFID Hydrocarbon Analyzer, Rack Mount FID Analyzer, Portable FID Analyzer, Continuous Emissions Monitoring, Volatile Organic Compound, Flame Ionization Detector, Heated Flame Ionization Detector, Emissions Monitoring System, Continuous Emissions Monitor, Gas Chromatography Method, Gas Chromatography, Flame Ionization

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