DIY auto draw

[darkmachine]

You need a barometer at your location. The closest weather station for AccuWeather to pull from might have different enough conditions to throw off your boiling temperature. Where are you in WV?

[minehart gap]

And how sure are you of the calibration of your thermometer?

[TapTapTap]

I have just been testing the math with the Barometric pressure from accuweather and boiling water to see what I come up with.
Today pressure was 30.03 when using the equation I get 212.17° but If I boil water it will boil at 210.6°. I may go ahead and build it with a Arduino and try it this spring. If it works then great and if not I am not out much.

You can't be taking an accurate temperature measurement.

ken

[4x4extreme]

And how sure are you of the calibration of your thermometer?

I had 4 of them in the water. 0ne candy 2 digital and 1 dial thermometer.

[4x4extreme]

You need a barometer at your location. The closest weather station for AccuWeather to pull from might have different enough conditions to throw off your boiling temperature. Where are you in WV?

I am in Beckley. I am going to get a sensor so I can get the pressure for my location. I am also going to go ahead and get the parts to put this together with a arduino.

[TapTapTap]

I had 4 of them in the water. 0ne candy 2 digital and 1 dial thermometer.

Did you bring it up to a hard boil?

[4x4extreme]

Did you bring it up to a hard boil?

Yes I did this test for well over 30 minutes and even had to add water due to evaporation. I am just trying to test my equation to see if it is correct before putting it into the program. The first thing I have to get is a accurate pressure reading for my location. It has been throwing me off because I live just over 2400 ft elevation so when the equation is telling me boiling is over 212 that is a red flag.

[darkmachine]

I am in Beckley. I am going to get a sensor so I can get the pressure for my location. I am also going to go ahead and get the parts to put this together with a arduino.

.
I purchased all my parts through adafruit, BMP280 for my barometric sensor, and pt100 three wire thermocouple and amplifier. It's been sitting in my shop for a while, you are motivating me to get back to work! I'm in the eastern panhandle quite a drive from Beckley.

[minehart gap]

I had 4 of them in the water. 0ne candy 2 digital and 1 dial thermometer.

That's impressive. I have gathered quite a collection of thermometers, some really high quality and some not so great, and I seldom get two to agree to the tenth of a degree. Sounds like an interesting project.