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2. Continuous emissions monitoring system - Wikipedia

   en.wikipedia.org/wiki/Continuous_emissions...

   A small sample of flue gas is extracted, by means of a pump, into the CEM system via a sample probe.Facilities that combust fossil fuels often use a dilution-extractive probe to dilute the sample with clean, dry air to a ratio typically between 50:1 to 200:1, but usually 100:1.

3. Discharge Monitoring Report - Wikipedia

   en.wikipedia.org/wiki/Discharge_Monitoring_Report

   A Discharge Monitoring Report (DMR) is a United States regulatory term for a periodic water pollution report prepared by industries, municipalities and other facilities discharging to surface waters. [ 1 ] : 8–14 The facilities collect wastewater samples, conduct chemical and/or biological tests of the samples, and submit reports to a state ...

4. x̅ and s chart - Wikipedia

   en.wikipedia.org/wiki/X̅_and_s_chart

   Therefore, several authors recommend using a single chart that can simultaneously monitor ¯ and S. [8] McCracken, Chackrabori and Mukherjee [9] developed one of the most modern and efficient approach for jointly monitoring the Gaussian process parameters, using a set of reference sample in absence of any knowledge of true process parameters.

5. x̅ and R chart - Wikipedia

   en.wikipedia.org/wiki/X̅_and_R_chart

   ¯ ¯ ¯ for monitoring the process mean; where ¯ ¯ and ¯ are the estimates of the long-term process mean and range established during control-chart setup and A 2, D 3, and D 4 are sample size-specific anti-biasing constants.

6. Environmental monitoring - Wikipedia

   en.wikipedia.org/wiki/Environmental_monitoring

   Environmental monitoring is the processes and activities that are done to characterize and describe the state of the environment. It is used in the preparation of environmental impact assessments, and in many circumstances in which human activities may cause harmful effects on the natural environment.

7. Workplace exposure monitoring - Wikipedia

   en.wikipedia.org/wiki/Workplace_exposure_monitoring

   Workplace exposure monitoring is the monitoring of substances in a workplace that are chemical or biological hazards. It is performed in the context of workplace exposure assessment and risk assessment .

8. Condition monitoring - Wikipedia

   en.wikipedia.org/wiki/Condition_monitoring

   Often visual inspections are considered to form an underlying component of condition monitoring, however this is only true if the inspection results can be measured or critiqued against a documented set of guidelines. For these inspections to be considered condition monitoring, the results and the conditions at the time of observation must be ...

9. Water quality - Wikipedia

   en.wikipedia.org/wiki/Water_quality

   Finely divided solid particles formerly suspended by water turbulence may settle to the bottom of the sample container, or a solid phase may form from biological growth or chemical precipitation. Microorganisms within the water sample may biochemically alter concentrations of oxygen, carbon dioxide, and organic compounds.