nCLD 66 Y

Gas Analyzer


  • Ambient monitoring in areas with excellent air quality
  • Indoor NO2 measurements
  • Permanent monitoring of clean room conditions in R&D labs
  • Biomedical and pharmaceutical research
  • Plant physiological research


  • Compact design
  • Internal ozone generator and scrubber
  • Molybdenum or metal converter for NOX detection
  • Four freely selectable measurement ranges
  • Operation and control via touchscreen
  • Mobile DC operation


50 ppb – 25’000 ppb

Minimum Detectable Concentration

0.5 ppb


NO / NO2 / NOx


Gas Analyzer

The nCLD 66 Y is the next generation in single-channel ambient air monitoring instrumentation. Unique in speed and precision, the nCLD 66 Y is modular designed and capable of sequentially measuring NO, NO2 and NOX. The analyzers expandable capabilities allow assessment of additional nitrogen oxide based parameters. Its graphical user interface also individually displays and connects to other instruments’ data.

Flexible Ambient Air Monitoring

The nCLD 66 Y is the ideal instrument for ambient air monitoring, either installed in racks, fixed monitoring stations or mobile laboratories. Besides the ambient air in the open environment, the analyzer is also suitable for air quality monitoring in production plants and offices (TLV = threshold limit value). The nCLD 66 Y is a single-channel NOX-detector based on a modular principle. The measurement ranges are individually adjustable, the parameters are NO, NO2 and NOX and the instrument’s inlet operates at ambient pressure. Calibration and adjustment of the unit runs quick and automatic while all necessary data is continuously stored and available anywhere and at any time.

User Friendliness

The new touch sensitive graphical user interface enables the user to individually adjust the instrument operation and data management according to his/her needs and applications. The bright 7” monitor gives a clear overview and allows numerical and graphical display of values. Multiple digital in- and outputs guarantee a maximal connectivity and flexibility for the remote operation, control and maintenance of the nCLD 66 Y, ensuring unsurpassed precision and reliability.

Compact, Modular and Intelligent!

The nCLD 66 Y 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. The measurement principle will conform to the standard method for NOX-detection in ambient air (EN 14211).

Analyzer type

single chamber CLD for measurement of NO, NO2 or NOX

Measuring ranges

four freely selectable ranges from 50 ppb –25’000 ppb

Min. detectable concentration*

0.5 ppb

Noise at zero point (1σ)*

0.25 ppb

Lag time

30 sec (min. toggle interval)

Rise time (0-90%)

<3 sec (single-channel mode)

Temperature range

5-40 °C

Humidity tolerance

5-95% rel. h (non-condensing, ambient air and sample gas)

Dry air use for O3 generator

internally generated (no external supply gas required)

Sample flow rate

0.1 l/min

Input pressure

ambient externally stabilized within ±3 mbar

Power required

300 VA, 250 VA external membrane pump

Supply voltage

100–240 V/50–60 Hz


USB(3x), HDMI, Bluetooth, RS232 (w/o 9 pin connector), LAN, WLAN


height: 133 mm (5¼”)

width: 450 mm (19”)

depth: 540 mm (21.2”)


16 kg (35 lb) without pump

Delivery includes

nCLD 66 Y analyzer, power cable, USB-LAN adapter


nCLD 66 Y: NO/NOX analyzer

· internal molydenum converter

· toggle mode for NOX measurement


· inlet filter

· rack mount slides

· inlet filter

· USB-RS232 9pin connector

· FTDI-RS232-USB cable

· 24 V operation incl. DC vacuum pump

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



*Depending on filter setting.

Connectivity properties are country-specific.

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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