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For decades scientists have known that athletes who train at high-altitude, and then compete at sea-level, have a competitive advantage over those who train at sea-level only. Prolonged exposure to hypoxia, or lowered oxygen levels like those found at high altitudes, results in higher red blood cell count, hemoglobin levels, and enhanced oxygen carrying capacity by the blood. To take advantage of the hypoxia effect, some elite athletes spend weeks training at high elevations before an event, especially if the event is to be held at high altitude. Today, companies have designed sealed portable tents and even entire workout rooms...

A customer recently wrote us and asked, "I am testing a SenseAir K-30 CO2 Sensor next to a desktop CO2 meter. The K-30 is reading 778ppm, while the desktop meter shows 846ppm. Which one is correct?" The simple answer is that they are both correct! Yes, they are different, but both sensors are working within their rated accuracy. What does that mean? How is CO2 sensor accuracy defined? The accuracy of a CO2 sensor is defined as how close the measurement is to a reference gas, expressed as either a ± (plus-minus) value in parts-per-million (ppm) or as a percentage (%)...

Reliable carbon dioxide and oxygen measurement and control is critical in many applications. When comparing gas measurement devices, vendors use the terms diffusion sensor and sampling sensor to differentiate between the two major types of gas sensors. Having a general understanding of these terms can help you better evaluate which sensor is right for your application. Diffusion Sensors All gas sensors are diffusion sensors. In fact, your nose is the perfect example. Like a mechanical gas sensor, your nose has a space inside it where it measures molecules of different gases diffused in air. Why is diffusion important? Diffusion sensors...