Re: Calculating relative humidity
- From: "David Moran" <dmoran21@xxxxxxx>
- Date: Fri, 9 Dec 2005 16:36:12 -0600
"Scott" <ScottLWI@xxxxxxxxxxxxxxxx> wrote in message
news:dncoql$jt7$1@xxxxxxxxxxxxxxxxxxxxx
> David Moran wrote:
>> "Elekaj" <elekaj34@xxxxxxx> wrote in message
>> news:4399becd$0$4335$626a54ce@xxxxxxxxxxxxxxx
>>
>>>Hi
>>>
>>>For mesuring humidty, I have two digitals thermometers. One is mesuring
>>>the ambient air temperature and the second mesures the temperature of a
>>>wet cotton (which is in contact with the ambient air).
>>>
>>>In addition, I have a digital pressure sensor.
>>>
>>>But my problem is that I don't know the formula to calculate the relative
>>>humidity from dry temperature, wet temperature and pressure.
>>>
>>>Someone know this formula ?
>>>
>>>Thank you very much
>>>
>>>Alain
>>
>>
>> Do a google search on the Clausius-Clapeyron Equation and Relative
>> Humidity.
>>
>> Dave
>
> Does Clausius-Clapeyron work with wetbulb? I've only
> ever used it with dewpoint.
>
> Back when I took obs at the PSU Wx Tower, we slung the
> psychrometer to get wetbulb and then used "The Magic
> Wheel" to figure out RH given the dry and wetbulbs.
>
>
> Scott
I thought there was a way to do it, but I don't remember how. I remember
seeing a problem like this on a test back in school.
Dave
.
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- Calculating relative humidity
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