Thermometer

[Braailus Member Find all posts View Profile Close Braailus]

Hi guys, I was just wondering what you use to keep an eye on temperatures. I bought 3 digital devices that are identical but the readings one, is totally different from the others, as far as rate of change as well as actual temperature. It is obviously wrong so I do not use it. The other two are fairly close in their readings so I assumed that they were correct. That is until I installed my STC1000 in a freezer. I decided to use one of the 2 good thermometers just as a calibration check. The two probes are both dangling in the freezer next to each other so the readings should be identical. Needless to say, they differ between one and two degrees over time. The range is 17 dC to 18,5 dC on the one and 18 dC to 20 dC on the other. Is this close enough?

I would just like to know what the actual temperature is but what do I get that I can use as a reference? Are the glass thermometers you buy at the chemist truly accurate? Somehow I doubt that they would all be 100% accurate. Especially at 18 degrees because as a human your body would never be at that temp.

Your input please.

[defender110 Senior Member Find all posts View Profile Close defender110]

Make a mix of ice and water and let it stand for a while . This should get you 0 deg C on the dot . See which probe is the closest

[JIGSAW Senior Member Find all posts View Profile Close JIGSAW]

I have/had so many digital thermometers and if I could get just 2 to give the exact same reading, I would [&^%$%insert some sh|t here*^$#@]

[that guy al Senior Member Find all posts View Profile Close that guy al]

i've never had an accurate digital so i don't trust them. i prefer old school analogue.

[Braailus Member Find all posts View Profile Close Braailus]

Hi Al,

Which analogue ones do you use?

[Braailus Member Find all posts View Profile Close Braailus]

By that I mean, do you use the normal glass (medicine case models) or the more industrial ones with the dials (similar to what they sell for people to stab their meat with [emoji3])

[that guy al Senior Member Find all posts View Profile Close that guy al]

By that I mean, do you use the normal glass (medicine case models) or the more industrial ones with the dials (similar to what they sell for people to stab their meat with [emoji3])

sometimes both but the normal glass 'candy' thermometers are usually good enough for me.

[Rooster Senior Member Find all posts View Profile Close Rooster]

I have a few different digital ones as well. I have tested them against samples using a 'red alcohol' chemistry type. The one make works best in the higher temp ranges and I use this for my mash, the other works best in the lower ranges (I think they sold it as an aquarium thermometer) and I use this for my fridge and fermentation. I think it depends on the thermocouple that is used in the probe, they all have different resistance. I don't think a degree here or there makes a huge difference when there are so many variables that change in each brew. In my view the extra cost of precision instruments would be better spent on grains or hops that actually result in more beer being made!

[BruHaha Senior Member Find all posts View Profile Close BruHaha]

Instead of starting a new thread I thought I'd necro this one. I need one to check my mash temps.


For 30 bucks I'm assuming these ones from communica are NOT very accurate... right?
1.jpg


TAL that has this candy one for R140.
2.jpg


Any personal experience with either?

[Langchop Senior Member Find all posts View Profile Close Langchop]

After all the fun with digital inaccuracy, this is where I currently am in my brewing evolution...
GlassThermometerYellow.jpg
More costly but you can be a lot more confident in the readings

EDIT: more detail

Top ones are handy but can be out by 5 or 6 deg. Bottom one probably better, never used one, but the temp indication probably isn't as interval'ed as much as you would want for mashing

[BruHaha Senior Member Find all posts View Profile Close BruHaha]

On bid or buy.. not too bad at R145 all in.
1.jpg

[JIGSAW Senior Member Find all posts View Profile Close JIGSAW]

Instead of starting a new thread I thought I'd necro this one. I need one to check my mash temps.


For 30 bucks I'm assuming these ones from communica are NOT very accurate... right?
[ATTACH=CONFIG]2978[/ATTACH]


TAL that has this candy one for R140.
[ATTACH=CONFIG]2979[/ATTACH]


Any personal experience with either?

https://www.takealot.com/digital-aqu...m/PLID49433600

[jakeslouw Senior Member Find all posts View Profile Close jakeslouw]

Get this one:

https://za.rs-online.com/web/p/digit...eters/1231940/

Cheap will give you an idea: if you want accurate, expect to pay more.

[JIGSAW Senior Member Find all posts View Profile Close JIGSAW]

Get this one:

https://za.rs-online.com/web/p/digit...eters/1231940/

Cheap will give you an idea: if you want accurate, expect to pay more.

That unit doesn't seem to have the type of wire that I'll be comfortable sticking into liquids ???

[BeerHolic Senior Member Find all posts View Profile Close BeerHolic]

After all the fun with digital inaccuracy, this is where I currently am in my brewing evolution...
[ATTACH=CONFIG]2980[/ATTACH]

Agree, I have never used a digital thermometer