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View Full Version : Can my ET732 be off by 14 degrees at 212 ?


Pappy
08-26-2011, 01:48 PM
Out of 3 thermometers my ET732 is 14 degrees higher that the others. I still don't know if is the ET732 is correct and the others are wrong or the other way around. Wish there was a way to find out. I thought the ET732 was dead on. Not I'm not sure of anything now. I'm think the other ET732 temp probe is correct. I placed a oven thermometer in the UDS and it read the same as the ET732.

When you boil water there is about a 10 degree range wher the water is bubbling. It's hard to tell exactly where 212 is by watching the water.

I think I under cooked some purk butts using 2 of these thermometers yesterday. I don't know how to test the butts by poking them. I was trying to go by the temp. That must be the wrong thing to do. Especially if you don't really know what the temp is.

http://i1117.photobucket.com/albums/k591/Pappy1954/Thermometers%20Boiling/IMG_3499.jpg
http://i1117.photobucket.com/albums/k591/Pappy1954/Thermometers%20Boiling/IMG_3497.jpg
http://i1117.photobucket.com/albums/k591/Pappy1954/Thermometers%20Boiling/IMG_3496.jpg
http://i1117.photobucket.com/albums/k591/Pappy1954/Thermometers%20Boiling/IMG_3495.jpg

Terry Knife
08-26-2011, 01:54 PM
As far as my understanding of it, a full rolling boil will be a static temp and the water cannot go higher without pressure applied. There might be some variance in the different areas of the pot though if the burner isn't a NG or Propane burner

Pappy
08-26-2011, 07:10 PM
At room temp water, no heat, the ET732 seems to be only 8 degrees higher than the 2 other thermometers. The air temp probe reads the same as the food temp probe.

Groundhog66
08-26-2011, 08:47 PM
Rolling boil, water gets no hotter than boiling temp. Just put each probe in to test, make sure it isn't touching the bottom or sides, leave in for a minute or so and you'll have your answer.

Blackened
08-26-2011, 09:02 PM
did you try the ice water test?

Pappy
08-26-2011, 10:00 PM
What's the ice water test? Measure temp in ice water?

Blackened
08-26-2011, 10:47 PM
What's the ice water test? Measure temp in ice water?

yeah just put a some ice cubes in a rocks glass, barely cover with water, let it sit for a minute or so, stir it up and stick your probe in, should read 32*.. even better with crushed ice if you have that option

mmmmeat
08-27-2011, 01:00 AM
The Ice water is better as boiling point WILL change with elevation
ice is a constant 32 is freeze point but ice can be colder than that, and thats where the water comes in, you can have water@ 32 and Ice thats my understanding of the schematics of the stuff and things

Posted from my fancy android fone!!

bmanMA
08-27-2011, 06:30 AM
do your cal with some fresh batteries.

Pappy
08-27-2011, 06:46 AM
I will give the ice test a shot using some fresh batteries. I still have the original batteries in it. I must have at least 40 to 50 hours on them. Lost track of how many.

If the 732 is out of wack ................ It's just disappointing to know.
It's only 2 months old and I treat it like it was a Rolex watch.

QuietOne
08-27-2011, 08:50 AM
Can my ET732 be off by 14 degrees at 212 ?

Yes

Pappy
08-27-2011, 09:38 PM
Can my ET732 be off by 14 degrees at 212 ?

Yes

Is this normal or do I need to make a return.

Flask
08-27-2011, 11:10 PM
I would try the boiling boil test again. Your city's elevation is only 425 ft above sea level so the temperature error will be minimal. Try boiling it only about 2 inches of water in the small pot that will fit on your burner. Crank up the heat as high as it will go and wait. You want a jumping boil. Stick the probe in the middle of the water without touching metal. You might want to use tongs to hold the probe.

The ice test can be good but you have to get your ice bath just right to hit 32.

One more thing: If you have gotten the plug that plugs into your remote unit from the temp probe or the female receiver for the plug wet it can through off the temp.


I hope this helps.

Flask

Smoked
08-27-2011, 11:15 PM
Have you tried calling Maverick Industries and inquiring about your situation to see what their advice may be? They might acknowledge an issue and warranty your unit.

Theboz1419
08-28-2011, 02:28 AM
boiling point of water at Granite City, Illinois is 211.253(425 feet above sea level). Water can not go above the point of boiling.

Just turn the stove on high and boil some water the ET should be close to 211 or 212

charlie d
08-28-2011, 04:45 AM
I think I under cooked some purk butts using 2 of these thermometers yesterday. I don't know how to test the butts by poking them. I was trying to go by the temp.



Wiggle the bone a little and give it a tug. If it pulls out, the butt's ready. If it's boneless, see if you can easily pull a piece off.

Pappy
08-28-2011, 06:47 AM
My son bought me some new 6' long probes for my brithday. I will see how they measure temp compaired to the old ones.

I did call Maverick on Friday. They have a message that says leave a message. They only have a part time person answering qestions and will they will call you back or send them an email. They did not call back. I will try the email next to find out what they say about it.

So, if I turn the fire on high and boil water, the highest temp will be 212 ?
That doesn't seem right. It boils at 212. That's why it's bubbling. But I would thing it would keep getting hotter than 212.

QuietOne
08-28-2011, 09:31 AM
Past 212F (100C) unless there is salt or other minerals in it water is steam

mcrimm
08-28-2011, 09:40 AM
Regarding water above 212 - look up 'latent heat' and you will see why it takes a lot of heat to move water from 212 to steam. Water stalls at 212 just like water stalls when trying to go below 32. Any time you change states - ie solid to liquid, liquid to vapor you need to add lots of heat. Conversely, when you condense steam to water, lots of heat is released.....ice to water, heat is absorbed......Mike

Theboz1419
08-28-2011, 09:40 AM
Water turns to steam at 212. the molecules are moving so fast they escape into steam, thus water can not get hotter then 212, unless its under preasure.

azken
08-28-2011, 10:16 AM
A brother posted this site a little while back...I don't recall who...This calculates waters boiling point: http://www.csgnetwork.com/h2oboilcalc.html

Theboz1419
08-28-2011, 10:23 AM
A brother posted this site a little while back...I don't recall who...This calculates waters boiling point: http://www.csgnetwork.com/h2oboilcalc.html


I think it was me not to long ago, :cool: If not me I also posted that same site on here a few weeks ago, lol.

cameraman
08-28-2011, 10:28 AM
Maverick seems pretty responsive on their Facebook page.

tomslusher
08-28-2011, 07:44 PM
I am having a similar problem. I have tried testing 4 thermometers using boiling water and all read out at either 211 or 212. But when used on the komando grill/smoker, even if the probes are next to each other, I get swings as much as 40 degrees. Which one do I trust?

thanks,

tomslusher

J'ville Grill
08-28-2011, 08:00 PM
I am having a similar problem. I have tried testing 4 thermometers using boiling water and all read out at either 211 or 212. But when used on the komando grill/smoker, even if the probes are next to each other, I get swings as much as 40 degrees. Which one do I trust?

thanks,

tomslusher

Curious, are the other thermometers also digital?

Pappy
08-28-2011, 08:29 PM
Regarding water above 212 - look up 'latent heat' and you will see why it takes a lot of heat to move water from 212 to steam. Water stalls at 212 just like water stalls when trying to go below 32. Any time you change states - ie solid to liquid, liquid to vapor you need to add lots of heat. Conversely, when you condense steam to water, lots of heat is released.....ice to water, heat is absorbed......Mike

Water turns to steam at 212. the molecules are moving so fast they escape into steam, thus water can not get hotter then 212, unless its under preasure.

This thread really turned out to be huge help, now that I understand the gas, liquid, solid properties of water. My ET732 is reading 214 degrees in boiling water. I can live with that. I am now positive that my old needle guage Taylor thermometer is 5 degrees under. The industrial thermometer was 12 degrees under also. I have two turkey themometers in my UDS (mostly to look cool). One was 13 degrees over and the other was 12 degrees under. Those 2 are junk. $10 each. You get what you pay for. I just order 2 new red, white & blue, 2" old smokey thermometers from Cabelas to relpace them on the UDS.

I sure had it in my head that ordinary water could get hotter than 212.
Thanks to everyone who replyed and helped fix my problem.

J'ville Grill
08-28-2011, 08:43 PM
You do know that some thermometers can be calibrated right?

Pappy
08-28-2011, 09:01 PM
You do know that some thermometers can be calibrated right?

Yes, the industrial one that I have can be calibrated.
I set that one to 212.

tomslusher
08-28-2011, 09:18 PM
Curious, are the other thermometers also digital?

Three digital and 1 dial. The dial one came with the grill in the hood, two of the digitals are cheaper walmart probes, one being wireless. And the last is digital and it also is the smoker controller from Auber Instruments.

I don't understand why they can match in boiling water but not be the same on the grill.

tomslusher

J'ville Grill
08-28-2011, 09:56 PM
Three digital and 1 dial. The dial one came with the grill in the hood, two of the digitals are cheaper walmart probes, one being wireless. And the last is digital and it also is the smoker controller from Auber Instruments.

I don't understand why they can match in boiling water but not be the same on the grill.

tomslusher

Interesting. A lot of people would be inclined to believe that the cheaper ones are incorrect. I'm not so sure higher cost doesn't always assure higher quality.

mikeTRON
08-29-2011, 02:47 AM
LoL I went through this exact same ordeal last summer.I said screw all the thermometers and bought a Thermapen. The rest of them (like the maverick) are simply guides that give me an idea on when to pull out the Thermapen :thumb:

Imagine this frustration compounded with wireless signal loss with the older model of the maverick :shock: basically it sticks on the last signal (i.e. TEMPERATURE) that it received so you THINK its still at the stall..

Theboz1419
08-29-2011, 06:51 AM
Imagine this frustration compounded with wireless signal loss with the older model of the maverick :shock: basically it sticks on the last signal (i.e. TEMPERATURE) that it received so you THINK its still at the stall..



I know all about that, LOL

My room is upstairs and the ET-73 would actually connect from the back deck only if I had it in certain spots in the room.

but even then, it would loose connection sometimes and I would find that my uds was at 180 and not 230 where it was 3 hours ago:mad2:

5-0 BBQ
08-29-2011, 09:52 AM
I did call Maverick on Friday. They have a message that says leave a message. They only have a part time person answering qestions and will they will call you back or send them an email. They did not call back. I will try the email next to find out what they say about it.
I am glad you have it figured out. The ET-732 should read plus or minus 2 degrees.

As far as the customer service message, I will ask Darren about that. I know that he was with me in New Holland on Friday but they do have a full time customer service department.