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water gauge

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Pete49:
very nicely done :clap:
On Ebay (Oz) there are wireless weather stations with rain gauge,windspeed & direction,windchill , in & outside temps etc for $99 freight free. But not as nice as your model  :thumbup:
Cheers
Pete

HS93:

--- Quote from: John Hill on August 19, 2010, 05:54:55 AM ---That is a very nice execution of an original idea! :thumbup:

The classic way of making a recording rain gauge was the 'Dines Tilting Syphon' rain gauge.

I am sure it will be described on the net somewhere but I recall them well.

If you can imagine a vessel like a tea pot with a long spout,  rain was collected from a wide diameter funnel and filled the 'tea pot' which was resting on a sharp edge and was balanced so that when not full the tea pot rested in the normal position. As the tea pot filled it reached a point where it overbalanced and the vessel tilted the spout downwards and water started to flow out which caused the vessel to tip back to the starting position.  Once water started to flow it continued to siphon until the vessel was empty even though back at the normal position.

A simple pen mechanism made marks on a clockwork driven paper chart though no doubt modern version would have an electrical pickup of some kind.  The pen also showed the rate of rain.

John

--- End quote ---
Hi yes i have seen that type in fact that was the first one I made, ( well a version of it) but we wanted to be able to mesure small amouts of rainfall during a day and they only seem to work with larger amouts, the one i have built will work down to 15 ml the pot is a small medicene pot befor it gets to that it goes through a small tank that limits the flow to the unit so it is not overwhelmed in downpours but will be able to catch small sprinkles.
Pete49
yes i have seen them but it was the need for acurate mesurments plus thethe need to be able to log the rainfall from a remote position  and to be able to retrive it  infact the picaxe unit we are using could have bougout us a few of the ebay ones.

navzptc:

--- Quote from: Bluechip on August 19, 2010, 04:46:06 AM ---
Would like a source on mail order if you have one.


Dave BC

--- End quote ---

Dave,

Try here: http://www.fast-lad.co.uk/ and do a manual search for 'ball'.

One of my regular suppliers who offer great service.

Andy

HS93:
this is one shop in the uk that has a lot of ball joints etc and not bad to deal with

http://www.modelshopleeds.co.uk/catalog/index.php?cPath=37_105_101&sortcol=3&sortdir=a&page=1

I also use this store a lot they have parts deliverd to the uk in 5 days normally

http://stores.ebay.co.uk/Dinball_Mis-Items_W0QQ_fsubZ1403110QQ_scZ1QQ_sidZ42095710QQ_sopZ1QQ_trksidZp4634Q2ec0Q2em322
 
I also use them for bearings look at the prices for 10 have not been able to beat them

http://stores.ebay.co.uk/Dinball_Single-size_W0QQ_fsubZ7867793QQ_scZ1QQ_sidZ42095710QQ_sopZ1QQ_trksidZp4634Q2ec0Q2em322

Peter

Bluechip:
Andy, Peter..

Thanks for the links ... just the job   :thumbup:

Duly squirrelled away ..

Dave BC

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