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2. Carbon dioxide sensor - Wikipedia

   en.wikipedia.org/wiki/Carbon_dioxide_sensor

   New developments include using microelectromechanical systems (MEMS) IR sources to bring down the costs of this sensor and to create smaller devices (for example for use in air conditioning applications). [3] Another method (Henry's Law) also can be used to measure the amount of dissolved CO 2 in a liquid, if the amount of foreign gases is ...

3. Capnography - Wikipedia

   en.wikipedia.org/wiki/Capnography

   Capnography directly reflects the elimination of CO 2 by the lungs to the anesthesia device. Indirectly, it reflects the production of CO 2 by tissues and the circulatory transport of CO 2 to the lungs. [7] When expired CO 2 is related to expired volume rather than time, the area beneath the curve represents the volume of CO

4. Colorimetric capnography - Wikipedia

   en.wikipedia.org/wiki/Colorimetric_capnography

   Colorimetric capnography is a qualitative measurement method that detects the presence of carbon dioxide (CO2, a relatively acidic gas) in a given gaseous environment. From a medical perspective, the method is usually applied by exposing litmus paper/film to an environment containing a patient's airway gases (i.e. placing it into their breathing circuit/airway circuit), where it will then ...

5. TV-band device - Wikipedia

   en.wikipedia.org/wiki/TV-band_device

   A sensing-only device must vacate a channel within two seconds of detecting non-TVBD activity. Fixed devices may use any of the vacant US TV channels 2, 5-36 and 38-51 with a power of up to 1 watt (4 watts EIRP). They may communicate with each other on any of these channels, and also with personal/portable devices in the TV channels 21 through ...

6. Monitoring (medicine) - Wikipedia

   en.wikipedia.org/wiki/Monitoring_(medicine)

   Capnography, which involves CO 2 measurements, referred to as EtCO2 or end-tidal carbon dioxide concentration. The respiratory rate monitored as such is called AWRR or airway respiratory rate) Respiratory rate monitoring through a thoracic transducer belt, an ECG channel or via capnography; Neurological monitoring, such as of intracranial pressure.

7. Gas detector - Wikipedia

   en.wikipedia.org/wiki/Gas_detector

   A typical calibration schedule for a portable gas detector is a daily "bump test" accompanied by a monthly calibration. [17] Almost every portable gas detector requires a specific calibration gas In the US, the Occupational Safety and Health Administration (OSHA) may set minimum standards for periodic recalibration. [citation needed]

8. Air pollution measurement - Wikipedia

   en.wikipedia.org/wiki/Air_pollution_measurement

   The earliest devices used to measure pollution include rain gauges (in studies of acid rain), Ringelmann charts for measuring smoke, and simple soot and dust collectors known as deposit gauges. [1] Modern air pollution measurement is largely automated and carried out using many different devices and techniques.

9. Greenhouse gas monitoring - Wikipedia

   en.wikipedia.org/wiki/Greenhouse_gas_monitoring

   Greenhouse gas monitoring is the direct measurement of greenhouse gas emissions and levels. There are several different methods of measuring carbon dioxide concentrations in the atmosphere, including infrared analyzing and manometry. Methane and nitrous oxide are measured by other instruments.