CLD 811 CM

CLD 811 CM specifications

CLD 811 CM flow diagram



The CLD 811 CM ammonia analyser is unique in its performance with a colourful touch screen display enabling easy and flexible operation. It allows the simultaneous measurement of NO, NO2, NOx or NOx, NH3 and total NOx-Amines in raw exhaust of several thousand ppm down to a few ppb! The heated and pressure regulated inlet minimises chemical alterations of the sample gas.

When decimals are decisive. The CLD 811 fulfills the requirements of the automotive industry when it comes to monitor reproducible and reliable NOx and ammonia data.

With its heated inlet and automated pressure control the analyser can
handle rough samples, such as raw exhaust gas. The CLD 811 CM analyser is optimised for the measurement of N-containing compounds such as NO, NO2, NH3, NMP (N-Methyl-2-pyrrolidone) and amines.

This is the result of an extended range capability designed into this state of the art monitor. Its stability, reproducebility and reliability are representing the name ECO PHYSICS at its best.

Clearly structured graphic touch screen display
informs the user about real-time data

Meeting tough demands. The legislators push the environmental laws, taking giant strides. In the automotive industry the measurement of hot, raw exhaust gases is mandated by law – EURO 6 or EPA 2007 – and it is now only a question of time before this is extended to other areas, such as the manufacture of off-road engines. Therefore forward-looking suppliers of drive components verify the nitrogen oxide emissions of their products for the sake of both: the environment and quality. Only the best performing benches will lead to truly optimised engines. And many know how to achieve it: with the most reliable measuring instruments from ECO PHYSICS!

User friendliness. If needed the user may choose individual sequences and select from the predefined settings in a simple ease of use graphical user interface.

Compact and modular design. The CLD 811 CM is the most compact unit of its class. Thanks to the totally modular layout, this analyser is designed for your system or may be placed nearby your sampling point.
Thus, it will make your most indispensable measurement tool for you for a multitude of applications.


  • Compact design
    without any additional
    space required
  • Minimised CO2 and
    H2O quenching
  • Four freely selectable measurement ranges
  • Operation and
    control via touch
    screen or remote
    personal computer

  • Emissions Test Benches
  • Catalyst Development (SCR)
  • Engine Test Cells
  • Car Production
  • Exhaust Analysis