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IS there a sensor to measure water in atmosphere? Answered

Actually i want to know whether there is a device which can measure the rain fall (not actually before hand but atleast in few minutes after the rain starts)which can be otherwise be substituted by a sensor which generates a message when it detects rain..........

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tylervitale
tylervitale

8 years ago

Your question title is a bit vague, but if I understand the rest correctly, you want a device that can tell you when it's raining?

There are several projects out there for circuits and devices which detect water. (usually being based on continuity) Look up "water sensor". They're usually simple electronic circuits that have two electrodes close together. When water falls on the electrodes, it closes the gap between them making a complete circuit.
If you couple this with a container and maybe a funnel, you could have a device that detects rain even before it really starts pouring.

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blkhawk
blkhawk

8 years ago

To measure the moisture in the atmosphere you use a hygrometer. To measure precipitation you use a pluviometer or rain gauge. 

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canucksgirl
canucksgirl

8 years ago

With a humidity gauge, you can measure the percentage of water in the air. Many of them can be found with outdoor thermometers.

With a simple rain gauge, you can get a fairly precise measurement of the rainfall. (Most look like a tall, clear tube that collects rain water and using the measurement on the side you can determine in millimeters what you got from a given rainfall).

With either gauge, you could probably add a sensor to give you an alert, but I found that this company has a digital device which collects rain water and gives you an alert already.

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steveastrouk
steveastrouk

8 years ago

there are loads of them . the traditional method is to have rows of pcb tracks, inter meshed, and measure the resistance between them.

another method uses two pieces of mesh and some thin spacers-insulators,same ideas, measure resistance