In fact, in Germany the Bernese mountain dog is referred to as Berner Sennenhund. Sennenhund literally means alpine pasture dog. Champex, Leysin, Anzere, Arosa, and Brigels are name choices derived from ski areas within the Swiss Alps.
A carbon dioxide sensor or CO2 sensor is an instrument for the measurement of carbon dioxide gas. The most common principles for CO 2 sensors are infrared gas sensors (NDIR) and chemical gas sensors.Measuring carbon dioxide is important in monitoring indoor air quality, the function of the lungs in the form of a capnograph device, and many industrial processes.he gas is pumped or diffuses into the light tube, and the electronics measures the absorption of the characteristic wavelength of light. NDIR sensors are most often used for measuring carbon dioxide. The best of these have sensitivities of 20â50 PPM.
You can test a carbon monoxide detector to ensure it can identify the level of carbon monoxide (CO) in the air, measured in parts per million (ppm). Pressing the 'Test' button on the detector will only tell you whether the device has adequate electrical power from an outlet or batteries.tep 3: Test Digital Readout CO Detectors with a Low Level CO Source. To confirm that a digital readout CO detector is detecting carbon monoxide, test it with a substance that will detect low levels of the gas, such as a lit cigarette or a lit incense wand.