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[ pdf ] Measurement of Level, Humidity and pH

Measurement of Level, Humidity and pH Download
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Topic under  Level Measurement
Source: nptel.iitm.ac.in 
File size: 299.72 KB
File type: pdf
Last download on: Tue May 01, 2018 09:31:10 AM
Short Desciption:
objectives: Name different methods for level and moisture measurements; Explain the basic techniques of level and humidity measurement; Explain the principle of pH measurement; Explain the necessity of using special measuring circuit for pH measurement;

Summary:
[ Hydrostatic Differential Pressure type ~ Capacitance type ~ Ultrasonic type ~ Radiation technique ~ Humidity Measurement ~ Humidity measurement finds wide applications in different process industries. ~ atmosphere must be controlled below a certain level in many manufacturing ~ semiconductor devices, optical fibres etc. Humidity inside an incubator must ~ precision level. Textiles, papers and cereals must be dried to a standard ~ to prevent the quality deterioration. The humidity can be expressed in ~ absolute humidity, (b) relative humidity and (c) dew point. ~ Humidity can be measured in different ways. Some of the techniques are explained ~ Hygrometer ~ Psychrometer ~ Dew point measurement ~ Conductance/Capacitance method of measurement ~ Infrared Technique ~ Measuring Electrode ~ Reference Electrode ~ Measuring scheme ]
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