CLD Analyzer

For monitoring: NO, NO2, NOX

CLD Analyzer

The TRACE-GAS CLD analyzers are based on the chemiluminescence effect for the detection of nitrogen oxides. They combine a direct measuring method with fast reaction times and a long lifetime. They convince by low maintenance requirements and extremely stable measured values.

Chemiluminescence Analyzer, CLD Analysator, NOX, NO2, NO
For monitoring: NO, NO2, NOX

CLDmono Analyzer

Single channel CLD analyzer for precise detection of nitrogen monoxide (NO). By using a NOX-converter and a switch at the reaction chamber, nitrogen monoxide and higher value nitrogen oxides (NOX) can be measured sequentially. In addition, the instrument with converter can also be used for pure nitrogen oxide (NOX) measurement.

NOx Converter

For monitoring: NO, NO2, NOX

CLDdual Analyzer

The dual-channel analyzer with its parallel arranged reaction chambers allows the simultaneous measurement of NO and NOX.
For raw gas measurements the CLDdual can be heated to 190°C and is ideally suited for both high and low concentrations.
The NO2 content can be determined by calculation.

By integration of a NDIR sensor an additional measurement of CO/CO2 is possible.

  1. Key Features
    • direct measuring method
    • extremely stable measurement values
    • high dynamic range
    • quick response time
    • very good signal-to-noise ratio (SNR)
    • capacitive touch screen
    • intuitive user interface
    • extremely low maintenance
    • high life span
    • modular structure
  2. Applications
    • Automotive industry
    • Agriculture
    • Biomedical development labs
    • Chemical and high-tech industry
    • Analysis of chimney exhaust gases
    • DeNOX plants
    • Monitoring of marine engines
    • NO2 measurement in buildings
    • Operation of burners and boilers
    • Petrochemistry
    • Pharmaceutical development labs
    • Plant physiology research
    • Quality control in production
    • Waste incineration
    • Water analysis TNb
  3. Technical Data

    Technical dataCLDmono basicCLDdual basic
    Ambient temperature10 - 35 °C (non condensing)
    Inlet pressure800 - 1.100 mbar
    Gas flow30 - 200 ml/min/channel 1
    CommunicationModbus TCP/IP + analog output 4 - 20 mA
    Dimensions (L x W x H)19" 3 HU (543 x 485 x 143 mm)
    Weightapprox. 23 kg
    Supply voltage230 V AC/50 - 60 Hz
    Heatable-70 - 190 °C
    User interface7" LCD (resistive touch)
    1 can be adjusted if necessary

  4. Specifications

    SpecificationsCLDmono basicCLDdual basic
    Measuring range (FS) min.0 - 100 ppm
    Measuring range (FS) max.0 - 3.000 ppm
    Limit of detection (LOD) 1 @t10-t90 ≤ 10 s≤ 40 ppb (3σ)≤ 20 ppb (3σ)
    Linearity≤ ± 0,5 ppm or ± 1 % measuring value (FS: 100 ppm)≤ ± 5 ppm or ± 1 % measuring value (FS: 3.000 ppm)
    Zero drift≤ ± 1 ppm in 10 h
    Span drift≤ ± 1 % FS in 10 h
    1 specified for constant temperature, flow and inlet pressure


    Osterwalder Straße 12
    D-87496 Hopferbach


    +49 (0) 83 72 - 70 80