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Old 1st April 2008, 03:38 AM   (permalink)
Default seek for the help

hello guys..

i'm kinda tired to do this project..
i will submit this project next week.. i hope to hear from the mmber that willing to help me..

my project title:
automatic shutdown for domestic gas stove..

kit use:
timer relay x 2
water sensor

concept:
1.detect the exist of the water (water boil and the water will active the sensor)
2.then, it will rotate the power window motor
3. to stop it at the correct time, i attach the timer relay.. after 10 second it will stop by itself..

the problem:
i cant use the copper plat as sensor..
to test it, i just need to tap the start wire and then separete it..
mean.. if there is water at that copper plat ..it cant work at all..

i will attach the real pic later... hope to get the reply from u after i attach the pic..
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Old 1st April 2008, 04:50 AM   (permalink)
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your discribing a water detector sensor type while you want to swich on tempature

use a temp switch that switch at 100 degrees celtius

Robert-Jan
rjvh is offline  
Old 1st April 2008, 05:21 AM   (permalink)
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Quote:
Originally Posted by rjvh
your discribing a water detector sensor type while you want to swich on tempature

use a temp switch that switch at 100 degrees celtius

Robert-Jan
. . .if you're at sea level. In my home town water boils at 97° C.


Torben
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Old 1st April 2008, 05:32 AM   (permalink)
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add some salt to it and it will go up

Robert-Jan
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Old 1st April 2008, 07:17 AM   (permalink)
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Quote:
Originally Posted by rjvh
add some salt to it and it will go up

Robert-Jan
Maybe I'll just wait one or two hundred years, then sea level will have risen instead.


Torben
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Old 1st April 2008, 05:32 PM   (permalink)
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you are wanting to shut the stove off when the water starts boiling, or when the pot boils dry?
jtexas is offline  
Old 3rd April 2008, 06:02 PM   (permalink)
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To detect when the water's boiling, you need to detect steam.

To sense when the pot boils dry, monitor the temperature of the bot and shut it down when the temperature exceeds 100°C.
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