According to Jim Davis from nci, shutting the pump off with high co levels is not a good idea. He also says that he has never saw high co levels damage a sensor in his 30 years of combustion testing. I’m 95% sure I understand him correctly when I’ve listened to a few of his talks online and reading his posts on hvac talk but I’ll have to double check and clarify. Especially since nci is recommending this line of analyzers now.
When a combustion analyzer's CO sensor measures high concentrations of CO, the CO sensor can become over-saturated which can render the sensor useless until it is purged with fresh air. Extreme cases of CO saturation (especially when exposing the sensor to high CO for longer periods of time) can damage or kill the CO sensor by consuming the reagents inside the sensor at a rapid pace. Stopping the pump prevents additional flue gases with very high CO concentrations from entering the combustion analyzer, but the analyzer should still be purged with fresh air with the pump back on as a precaution when CO spikes occur. The Sauermann Si-CA 030/130/230 combustion analyzers perform a quick 5 second purge before the pump completely shuts off to help remove high CO and other pollutants from the device.
Good product indeed.
According to Jim Davis from nci, shutting the pump off with high co levels is not a good idea. He also says that he has never saw high co levels damage a sensor in his 30 years of combustion testing. I’m 95% sure I understand him correctly when I’ve listened to a few of his talks online and reading his posts on hvac talk but I’ll have to double check and clarify. Especially since nci is recommending this line of analyzers now.
Thanks. All I can do is interview the rep though.
@@timdestasiohvac no hate bud. Nice work. Just mentioning interesting stuff 👍
When a combustion analyzer's CO sensor measures high concentrations of CO, the CO sensor can become over-saturated which can render the sensor useless until it is purged with fresh air. Extreme cases of CO saturation (especially when exposing the sensor to high CO for longer periods of time) can damage or kill the CO sensor by consuming the reagents inside the sensor at a rapid pace. Stopping the pump prevents additional flue gases with very high CO concentrations from entering the combustion analyzer, but the analyzer should still be purged with fresh air with the pump back on as a precaution when CO spikes occur. The Sauermann Si-CA 030/130/230 combustion analyzers perform a quick 5 second purge before the pump completely shuts off to help remove high CO and other pollutants from the device.