Simultaneous Measurement of CO and CO₂

Time Response 8ms T_10-90

The Non-dispersive infrared detector (NDIR) is the industry-standard method of measuring engine exhaust CO and CO₂ emissions. Cambustion have developed the two-channel NDIR500 fast response CO & CO₂ analyzer with a similar design to the HFR500 Fast FID and CLD500 Fast NO_x analysers. It measures CO and CO₂ simultaneously from one sample head, providing four streams of data per analyzer.

Cambustion's patented fast response design is achieved by miniaturising the sample chamber and operating it at sub-atmospheric pressure. Sample gas from the engine is conveyed through narrow heated capillaries directly into the sample chamber. The optical filters are mounted on a chopping wheel; reference and blank sectors on the chopping wheel correct for minute changes in temperature and IR emitter performance. Theinstrument gives a T_10–90 response time of approximately 8 milliseconds.

The NDIR500 is a two-channel analyser with the detectors located in remote sample heads on 10-metre (30') umbilicals. The main control unit is housed in a mobile cabinet with the vacuum pump located in the base. The analyzer is controlled via RS232 or RS485 serial communications from a desktop or laptop computer supplied by Cambustion with the operating software already installed and tested. The interface provides full control of the instrument including auto–calibration, start–up, service reminders, self–test, and trouble–shooting and help functions with video assistance.

A range of options and accessories are also available including:

• Multiple analyser enclosure
• Sub zero °C testing
• Digital remote control for integration with test cell controller.
• Sample filtration (for particularly sooty sample gas)

Cambustion can also supply engine and emissions consultancy, and service and maintenance contracts.

See applications and sample data.

Contact Cambustion for more information and prices.