Sauermann Si-CA Ambient CO Probe (0–500ppm) – SC0110B The Sauermann Si-CA Ambient CO Probe is an external sensor that plugs into a Sauermann Si-CA flue gas analyser to add ambient carbon monoxide measurement to the analyser's capabilities. It connects to the Si-CA 130 and Si-CA 230 as standard, or to the Si-CA 030 with the optional internal board fitted, giving technicians a single connected platform for combustion safety, indoor air quality and ventilation performance checks. It measures ambient CO across a 0 to 500 ppm range using an electrochemical sensor, with an accuracy of ±3% of reading between 0-200 ppm and ±1.5% of reading between 200-500 ppm. The connection is plug-and-play, so the probe can be fitted and used straight away with a compatible analyser, without additional setup. Key Features and Benefits