Recent content by Ray Hicks
-
R
How Can I Efficiently Measure Indoor Air Quality in Multiple Buildings?
Basically, the great outdoor is about 400 PPM CO2 that is our base line. Indoors 600 to 800 PPM is very well ventilated. There are standards for the acceptable levels. The data logger are used to measure over a long enough period to determine the occupied/ not occupied levels for CO2...- Ray Hicks
- Post #4
- Forum: General Engineering
-
R
How Can I Efficiently Measure Indoor Air Quality in Multiple Buildings?
You might consider using some portable CO2 data loggers, they are often used for indoor air quality surveys as you have described. www.CO2meter.com http://www.co2meter.com/collections/data-loggers/products/wireless-co2-temp-rh-environmental-logger- Ray Hicks
- Post #2
- Forum: General Engineering
-
R
Airborne Spray that changes colour where Carbon Dioxide is present
Very interesting idea one of our fellows tried to get some that would glow under black light years ago without success it was either toxic or smelled really bad.Today we are still using the CO2meters with the NDIR sensor. Like these www.co2meter.com.