Automotive Products

NOx Analyzers for Measuring Automotive Exhaust Emissions

Automotive/Mobile Source Products Overview

Continuing our long tradition of excellence in NOx analysis in the engine research market, the Supreme line offers unparalleled performance. They can be operated by means of the integrated touch screen or remotely from a personal computer via the Internet. These analyzers offer an integrated hard disk with nearly unlimited storage capacity for data logging purposes. The structured SQL database allows an easy means of exporting data. With its tilted and adjustable front panel the readability of displayed information is optimal, but additionally an external monitor can also be connected. The clear layout of the menu structure guides the user and enables one to take advantage of all analyzer functions almost intuitively. The AK protocol is standard with this remarkable instrument.

CLD Supreme Line Overview view 225K PDF file

Dual Reaction Chamber Analyzers

– NO and NOx are simultaneously measured and NO2 calculated and displayed. Supreme Line analyzers have an unequaled range of operation and the lowest detection level for an automotive analyzer.

CLD 811 view 991K PDF file
• Dual channel analyzer with heated sample inlet and
pressure correction for NO, NO2, NOX
• 0–10,000 ppm with detection level of 1 ppb


The CLD 800 series is our standard research line of analyzers, and offers many advantages over our earlier products, the 700 Series. By including an integrated vacuum pump and thermal ozone destroyer inside the case of the analyzer, the system is much more compact and efficient.

800 Series Overview view 105K PDF file

We offer a choice of converters, heated sample inlets, pressure regulation, and multiple reaction chambers. The CLD 800 series instruments are ideal for compact applications with reduced voltage requirements.

800 Series Design Specifications view 64K PDF file

Converter Efficiency Tester view 1.5M PDF file

CLD 844 CM hr view 419K PDF file
• 0-500 ppm Ammonia or NOX, NO,NO2, or NOX Amines
• heated sample inlet
• accurate to 0.025 ppm