News

The recently remodeled Dollard-des-Ormeaux Civic Centre in Quebec, Canada uses a carbon dioxide refrigeration system to freeze the floor of the ice rinks as well as provide building heating. The details of this project were published in a paper titled “CO2 Showcase for Ice Rinks, Pools” by Kateri Heon and Pietro Guerra from exp. Inc. in the August, 2015 ASHRAE Journal. According to the authors, what immediately emerged from the study was that: CO2 offered significant advantages for the project, compared to ammonia. This is despite ammonia compressors having an average coefficient of performance (COP) value of 3.45, which is...

      CO2Meter, Inc. welcomes John Houck to our team. John comes to CO2Meter with a background in engineering and aviation specializing in sensors. John arrived at CO2Meter.com with more than 30 years’ experience working as a field service engineer in the aviation, aerospace and medical fields. His specialization in developing sensors and integrating them into systems that improve the ability to understand our environments is exactly what our team needs. John is coming up to speed on the product line and starting to create documentation around our processes. As he learns more of the product line John will...

All infrared (NDIR) CO2 sensors have a dependence on pressure. This is because of the physics principle used to measure CO2 concentration. The NDIR type of sensor measures the IR radiation absorbed by CO2 molecules, which corresponds to the mole concentration. When pressure increases, the number of molecules in a given volume also increases linearly. Conversely, when pressure decreases (higher altitudes, for example) the number of molecules decrease. This app note includes both general information about Senseair sensors and pressure, as well as the equation for computing true CO2 level readings at various pressures useful for any NDIR CO2 sensor....

Many clients use our Arduino UART examples and Arduino source code to connect the popular SenseAir K-30 sensor to Arduino boards. However, these examples were all created before the SenseAir S8 CO2 Sensor was developed. So we were surprised when a client recently wrote us:   "To my surprise, the script you give for the K30 sensor works out of the box with the S8! Why don't you mention it in the app note? Had I known that from the start, I wouldn't have bothered you about which sensor to buy..." Frankly, we were a bit sheepish. In all the...

Which animal waste has the potential to produce the most methane? That was the question posed by Sean Weiss in his “Waste to Watts” science fair project that won the Orange County Science Fair for Alternative Energy. Sean, who currently attends middle school in California, said the idea for the project first occurred to him while he was cleaning up after the family dog. “Before starting this experiment, on one of our family trips I learned that some cow farms in the northern part of the Central California basin were using some of the methane from the waste to power...