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The ordinary thermodynamic temperature of the air, what you would measure with a regular thermometer. This is in contrast to the wet bulb temperature, which is the temperature reached by a wet surface. A classical weather station uses a sling hygrometer to measure the two. This is a pair of thermometers, one of which has a wet covering, something like a sock that can be dipped in water. By measuring both of these the humidity can be determined. Temperature of the free air as measured with a dry thermometer on a sling psychrometer over a grassy surface at a height of approximately 6 feet (1.8 meters).
What else can I help you with?
What is the superheat?
17 to 20 degrees is normal.you should always check dry bulb at return air and outside temp to determine the correct reading
Is the wet bulb thermometer reading always higher than a dry bulb reading?
No, the wet bulb is always lower. Evaporation from the wet bulb reduces its temperature.
Can you control inside temperature of bulb when it is glowing.?
I hope temp inside the bulb can be control by varying the input voltage and monitoring it be Infra red thermometer. But it may possible that illumination of bulb get affected.
What is the relative humidity of a room having a dry bulb 72 degrees F and a wet bulb temperature of 59 degrees F?
answer is
How do you use hygrometers?
Fill the water bottle and screw it on to the instrument. Then hang the hygrometer (by the loop at the top) on a wall or a tree, for instance, for at least five to 10 minutes before taking the measurements. Ideally the instrument should be in a well-shaded spot or in a Stevenson screen (refer to "Making your own weather station" in Section 4: Contacts and further information). The instrument contains two alcohol-in-glass thermometers with a scale of minus 10 to plus 110 degrees Celsius, in 1 degree increments. The end of the 'wet-bulb' thermometer is covered with a damp cloth dipped in water. The other thermometer is the 'dry-bulb'. 6 Record the wet-bulb and dry-bulb temperatures. 6 Calculate the wet-bulb depression - the dry-bulb temperature minus the wet-bulb temperature. 6 Determine the relative humidity (%) using the table (reverse page). Read down from the wetbulb depression and across from the dry-bulb temperature. do's and don'ts Be careful with the instrument. The thermometers are made of glass and can easily break. Empty the water bottle before returning the hygrometer to its box. how it works The hygrometer works on a similar principle to the whirling psychrometer. The main difference is that the hygrometer is not rotated, so evaporation from the damp cloth around the wet-bulb thermometer occurs more slowly.
On a cold winter day the air temperature is 2C and the wet-bulb temperature is -1C What is the relative humidity at this location?
51%.... open to the Relative Humidity chart in the reference tables. the wet bulb temperature is -1C and the dry bulb temp. is 2C, making a difference of 3C. On RH chart, go down to 3C column (difference between the Wet bulb and dry bulb) until it intersects the dry bulb 2C. At this intersection is 51%
What is the superheat?
17 to 20 degrees is normal.you should always check dry bulb at return air and outside temp to determine the correct reading
What is the ideal superheat?
17 to 20 degrees is normal.you should always check dry bulb at return air and outside temp to determine the correct reading
What is the maximum temp for room temp for dry storage?
135
What does a wet bulb and a dry bulb measure?
A wet bulb measures the temperature after water evaporation allows to cool and a dry bulb measures air temperature.
What is an example of thermostat?
On a car, it is in a housing. On 1 end there is a spring with a bulb, and the other end is the round closing plate. With the spring and temp bulb in the engine side, as the temp. rises the temp. bulb with the spring will pull the round plate open so that coolant may circulate.
What is the use of dry and wet bulb tenperature?
How you would use a wet-bulb thermoter and a dry-bulb theremometer to fine the relative humidity?
What is the wet bulb depression if the dry bulb is 20 and the wet bulb is 17?
15
What would the dew point temperature be when the wet and dry bulb temperature are the same?
the "current" temperature, ie, the temperature at which wet bulb and dry bulb are the same. when the wet bulb and dry bulb temperaturs equalized the dew point emperature equals them, because the air is saturated now.
If the difference between a wet bulb and a dry bulb thermometer is great is the humidity low?
No, the humidity is high when wet and dry bulb temps are far apart.
What instrument do you use to measure dry bulb and wet bulb temperature?
You would use a sling psychrometer to measure both dry bulb and wet bulb temperature. The dry bulb thermometer measures the air temperature, while the wet bulb thermometer measures the temperature with evaporative cooling considered.
Why dry bulb temperatures going low?
As the bulb dries the evaporation of water cools the bulb.
