Psychometric chart is a graph each point of which represents a specific condition of a gas vapour system (such as air and water vapour) with regard to temperature (horizontal scale)and absolute humidity (vertical scale);other characteristics of this system such as relative humidity, wet bulb temperature, latent heat of vaporization are indicated by lines on the chart. Additional references: https://www.youtube.com/channel/UCfufdF0-Hs3sLu1IX52ZJYA/videos http://techshore.in/blog http://techshore-updates.blogspot.in/ https://techshore-inspection-services.blogspot.in/ https://techshoreinspectionservices.blogspot.in/ https://techshoreinspections.blogspot.in/ #Techshore #Techshore_Kerala #Techshore_Inspection_Services #Techshore_Inspections #MEP #Civil #CAD #QA #QC www.techshore.in www.techshore.com

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PSYCHOMETRIC CHART
INSTRUMENTATION

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Table of Contents
1.0 Introduction 3
2.0 Psychometric Chart 3
Dry bulb temperature 3
Wet bulb temperature 4
Dew point temperature 4
Specific volume 5
3.0 Additional references 6
3.1 You Tube Channel 6
3.2 Official blogs 6

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1.0 Introduction
Psychometric chart is a graph each point of which represents a specific condition of a gas vapour
system (such as air and water vapour) with regard to temperature (horizontal scale)and absolute
humidity (vertical scale);other characteristics of this system such as relative humidity, wet bulb
temperature, latent heat of vaporization are indicated by lines on the chart.
2.0 Psychometric Chart
Psychometric chart is a graph each point of which represents a specific condition of a gas vapour
system (such as air and water vapour) with regard to temperature (horizontal scale)and absolute
humidity (vertical scale);other characteristics of this system such as relative humidity, wet bulb
temperature, latent heat of vaporization are indicated by lines on the chart.
Dry bulb temperature
Dry bulb temperature which is measured by a thermometer is called dry bulb temperature when the bulb
of the thermometer is kept dry.

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Wet bulb temperature
Wet bulb temperature which is measured by thermometer whose bulb is covered with a wet cloth or
wick.
Dew point temperature
Dew point temperature at which moisture contained in the air at a particular temperature becomes
saturated. Above this temperature the moisture will stay in the air.

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Specific volume
Specific volume is the volume occupied by the unit weight of air.
Humidity ratio is the ratio of the water vapour present the mass of dry air.

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Relative humidity is the ratio of actual amount of moisture present in one unit volume of dry air at a
certain temperature to the amount of moisture needed to saturate it at that temperature is called relative
humidity.
3.0 Additional references
3.1 You Tube Channel
i. https://www.youtube.com/channel/UCfufdF0-Hs3sLu1IX52ZJYA/videos
3.2 Official blogs
ii. Techshore Inspection Services : Tech Wizard
iii. Techshore Inspection Services : Video Tutorial
iv. Techshore Inspection Services : MEP Encyclopedia

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v. Techshore Inspection Services : Events & News letters
vi. http://techshore.in/blog