I am certainly no expert in this area, but the specs call it NDIR and there is a wikipedia page on that topic:
http://en.wikipedia.org/wiki/Nondispersive_infrared_sensor

Andre

On 03/07/2013 07:34 AM, David Jonsson wrote:
Hi

How does a infrared gas meter like this one work?
http://www.co2meter.com/collections/co2-sensors/products/sprintir-100-percent-co2-sensor

David

David Jonsson, Sweden, +46703000370

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