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Tuesday, January 06, 2009

Psychrometer is used for measuring Humidity

Question 52
Psychrometer is used for measuring -
a.         air velocity
b.         Core Temperature
c.         Humidity
d.         Height from Sea Level
Park 18th Edition Page 557
The sling or whirling psychrometer consists of 2 mercury thermometers (wet and dry) mounted side by side on a suitable wooden frame, and provided with a handle for rotating the instrument. The underlying principle is that by rotating the bulbs are exposed to air at definite velocity.
Explanation :
Self Explanatory
Comments :
Other ways of measuring Humidty are
                                                  i.      Dry and wet bulb hygrometer
                                                ii.      Assmann Psychrometer
Tips :
Ä     Air velocity is measured by anerometer and kata thermometer
Ä     Wind direction is measured by Wind vane

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