Humidity and temperature sensor

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#1
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Hello Freaks...

I would like some advice for a humidity and temperature sensor.

Temperatures are from 100 to 0 C

The problems:
- normal wind 28 m/s
- maximum wind 30 m/s
- dust
- some grains, not much
- maximum distance to the controller 80m

Some advice?

Regards,

Bruno Muswieck

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Do you want a cheap ($1-$5 USD) component that you will read with a microcontroller, or a finished, packaged, and calibrated device that costs about $30 USD?.    Is this for weather monitoring or measuring the temperature on the surface of an object?   A weather T/H component will range from about -20 to 50 degrees C.    A commercial thermometer device will have a wider range up to boiling and above ( +100C).

 

Component-level devices like the DHT-11 and DHT-22 should be inside a container that will keep them dry and sheltered from winds and dust. 

 

80 meters is a long distance between a sensor and a processor.  You will need to have another processor near the T/H sensor that will read the sensor, format the data,  and send the data 80 meters back to the main processor.

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Bruno,

 

You have not mentioned the all important sensor specifications of accuracy, resolution, repeatability and stability.

 

Cheers,

 

Ross

 

Ross McKenzie ValuSoft Melbourne Australia

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Grains and dust suggest an explosive atmosphere. Things have got real expensive now.

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Simonetta it's to measure the temperature and humidity of air in a process. It's in the way out of the air in the process. The best option right now is a commercial sensor because we want to validate another idea.

 

How long Ross? Nice to hear from you.
Ross I'm not worry about that right now because what the guy that works in the process told me that a sensor to work in that situation is hard to find but I don't think so. What I really think is that this sensor must have some kind of protection. Anyway, do you know some option?

 

How long Karman? Nice to hear from you too.
We don't have an explosive atmosphere in the place of the sensor.

 

I said 80 m but it's the worst case. Right now I need a sensor to validate the idea then I don't need such distance. 

 

 

Thanks guys... Hope that I could find something.. Maybe a cheap sensor to perform some tests...

Regards,

Bruno Muswieck

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Check out the arduino weather shield at sparkfun.com, it has a temperature and humidity sensor on it!