Tank Thermometers

[WoodNotOil]

I came across this site when I was looking for some thermometer that I could put in my tank that would actually come in contact with the water instead of a well.

http://www.stpats.com/testeq.htm

The Stainless Steel Bimetal Thermometers can be threaded into fittings on the tank. I am particularly interested in the one with the 48" stem that I could run to the bottom of my tank. I emailed them and they said that it only takes a reading from the bottom of the stem. I think this will give me a more accurate reading than my copper 1/2" well running to the bottom of the tank. I have noticed it is about 10* higher than actual temp. I will probably put a shorter one in at the top of the tank as well. That would free up my Alez digital one to monitor delta T on my flat plate.

 

[EricV]

I used these

http://www.grainger.com/Grainger/items/5XL18

going to add one to the Tarm itself so I can see the temp in F

 

[maurice]

I used these

http://www.grainger.com/Grainger/items/5XL18

going to add one to the Tarm itself because the Tarm so I can see the temp in F

Those are good thermometers. Employer I worked for 10+ years ago used them on alot of things.

 

[WoodNotOil]

I used these

http://www.grainger.com/Grainger/items/5XL18

going to add one to the Tarm itself so I can see the temp in F

Thanks for the suggestion. That is a well priced device. If I need more digital sensors, I will probably get one.

My issue for now was with getting a bottom reading from a pipe through the top of the tank. So far the 48" stem guage is the only option I have seen, other than trying to design a well that won't heat over it's length. My copper well is heating over the length and giving too high a reading.

 

[maurice]

Is your copper well dry from top to the bottom on the inside of the well? Or could you make one? You could then drop the Taylor probe to the bottom?

 

[WoodNotOil]

The well is dry and made of 1/2" copper with a cap on the bottom. I have an Alez digital thermometer with two probes. One of the probes is dropped down the well to the bottom. As I stated above, the reading is ending up higher than it actually is, which I am attributing to the full length of the well being heated. I think the long stem one will get a better reading, but we will see when I get around to ordering it.