nCLD 811 M

SupremeLine Gas Analyzer


  • Emissions test benches
  • Catalyst development
  • Engine test cells
  • Car production
  • Exhaust analysis


  • Compact design without any additional space required
  • Minimized CO2 and H2O quenching
  • Four freely selectable measurement ranges
  • Touch screen operation or remote operation


1 ppm -10’000 ppm

Minimum Detectable Concentration

1 ppb


NO, NO2, NOx


SupremeLine Gas Analyzer

The nCLD 811 M is the next generation in two-channel emissions monitoring instrumentation. Unique in speed and reliability, the nCLD 811 M is modular designed and allows the continuous and simultaneous analysis of NO, NO2 and NOx in raw exhaust gasses with NOx concentrations ranging from several thousand ppm down to a ppb. Its graphical user interface “GUI“ also individually displays and connects to other instruments’ data.

When Decimals are Decisive
The nCLD 811 M fulfills the requirements of the automotive industry when it comes to producing reproducible and reliable NOx data. With the heated inlet and the built in automated pressure control system, the analyzer is capable of handling rough samples, such as raw exhaust gas. With a detection limit of 1 ppb, the nCLD 811 M is also suited for analyzing bag samples. The instrument has a broad range of capabilities designed to fit into this state of the art NOx monitor. Furthermore, calibration and adjustment of the unit runs quick and automatically with all necessary data available anywhere and at any time.

User Friendliness with “GUI“
The new touch sensitive graphical user interface “GUI“ enables the user to individually adjust the instrument operation and data management according to his/her needs and applications. The bright 8” monitor gives a clear overview and allows numerical and graphical display of values. Multiple digital in- and outputs guarantee a maximal connectivity for your remote operation, control and maintenance of the nCLD 811 M, ensuring unsurpassed precision and reliability.

Compact, Modular and Intelligent!
The nCLD 811 M is manufactured in a new compact and modular layout, in which each essential component of the chemiluminescence analyzer hosts its own CPU and interacts with other CPUs by BUS-communication. This assembly increases accessibility and serviceability by reducing wiring and piping.

Meeting Tough Demands
The legislators push the environmental laws, by taking giant strides. In the automotive industry, the measurement of hot and raw exhaust gasses is mandated by law – EURO 6 or EPA 2014. It is only a question of time until legislations are extended to other areas, such as manufacturing of off-road engines. Therefore, pioneering suppliers of vehicle components verify the nitrogen oxide emissions of their equipment, not only for optimization of their product, but also for contributing to the protection of our environment. Only the best performing benches will lead to optimized engines and only the best analyzers deliver optimum results.

Measuring ranges Four freely selectable ranges from 1 ppm -10’000 ppm
Min. detectable concentration* 1 ppb
Noise at zero point (1σ)* 0.5 ppb
Lag-time <1 sec
Rise time (0-90%) <1 sec
Temperature range 5-40 °C
Humidity tolerance 5-95% rel. h (non-condensing, ambient air and sample gas)
Sample flow rate 1.1 l/min.
Input pressure 600-1’200 mbar abs.
Dry air use for O3 generator internally generated (no external supply gas required)
Power required 650 VA maximum (Startup) and 320 VA in operation
Supply voltage 100-230 V/50-60 Hz
Interface USB(2x), HDMI, Bluetooth, RS232 (w/o 9pin connector), LAN, WLAN
Dimensions height: 178 mm (7”)

width: 450 mm (19”), with molding: 495 mm

depth: 540 mm (21.2”)

Weight 21 kg
Delivery includes nCLD 811 M analyzer, power cable, FTDI-RS232-USB cable, USB-LAN adapter, manual
Standard nCLD 811 M: metal converter, hot tubing, electro-mechanical pressure regulation
Options · Valve manifold

· USB-RS232 9pin connector

· analog output (external box): 4-20 mA into 500 Ω max.; 0-10 V


*depending on filter setting

ECO PHYSICS reserves the right to change these specifications without notice.

Further information can be found in the Product Brochure

Download Brochure


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