Australian Politics Forum - Temp controllers in cooking appliances

Its time Gold Member Offline Boot libs out Posts: 25639 Gender:	Re: Temp controllers in cooking appliances Reply #15 - Dec 4^th, 2016 at 7:26pm My old girl still has her sunbeam appliances and uses them from when i was an infant , they evidently learnt building quality will send you broke because everything sunbeam i have purchased is a piece of poorly engineered garbage
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Its time

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Re: Temp controllers in cooking appliances
Reply #16 - Dec 4^th, 2016 at 7:26pm

John Smith wrote on Dec 4^th, 2016 at 7:21pm:

Mistress Nicole wrote on Dec 4^th, 2016 at 6:13pm:

John Smith wrote on Dec 4^th, 2016 at 3:11pm:

my wife does the temperature control at my place

https://cdn.meme.am/cache/instances/folder303/500x/8762303.jpg

Your wife is a very, very lucky woman.

that's what I tell her. Roll Eyes

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bogarde73

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Re: Temp controllers in cooking appliances
Reply #17 - Dec 6^th, 2016 at 6:48am

When you set the temperature control on an oven or anything else, that is not giving you the actual temperature that the food, eg meat, is heating to.

You have to use one of those stick-in food thermometers to find that out.
So you might stick a roast in the oven at 200 but when you look at the thermometer it will tell you that when it reaches say 80 in the centre it is ready for underdone or some higher figure for well done etc.

I think I'm right in saying the temp control just gives you the environment temp not the food temp.

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Know the enemies of a civil society by their public behaviour, by their fraudulent claim to be liberal-progressive, by their propensity to lie and, above all, by their attachment to authoritarianism.

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Sprintcyclist

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Re: Temp controllers in cooking appliances
Reply #18 - Dec 6^th, 2016 at 8:05am

bogarde73 wrote on Dec 6^th, 2016 at 6:48am:

When you set the temperature control on an oven or anything else, that is not giving you the actual temperature that the food, eg meat, is heating to.

You have to use one of those stick-in food thermometers to find that out.
So you might stick a roast in the oven at 200 but when you look at the thermometer it will tell you that when it reaches say 80 in the centre it is ready for underdone or some higher figure for well done etc.

I think I'm right in saying the temp control just gives you the environment temp not the food temp.

Yes, that's my understanding.

A proportional control is significantly different to the 'normal' cheap controller used in the electric frying pans.

A proportional controller applies 100% power when it is heating, say heating up to 120 degrees.
Once the temp gets close to 120 degrees the power supplied drops back to 80%, then 50%.

So the temp reaches 120 degrees and does not go too much higher.
Once the temp drops the power applied rises a bit.

So the temp in the pan will vary from 115 to 125 degrees when it is set to 120.

If a pan had that, it'ld be the rolls Royce for cooking.

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Sprintcyclist

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Re: Temp controllers in cooking appliances
Reply #19 - Dec 6^th, 2016 at 3:47pm

The normal controllers apply 100% of the heating power till the set temp (120 degrees) is reached.
There is no 'tapering off.

Once 120 degrees is reached the heater turns fully off.
Due to thermal momentum, the temp rises past 120 degrees.

Once the heater turns fully off it cools down to 105 where it turns 100% on again, applying full heat.
As it is cooling, the thermal momentum ensures it cools to less than 105 degrees.

So the temp varies from 128 degrees to 98 degrees.

It goes from being too hot to being too cold.
At some stages, it is good.

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Sprintcyclist

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Re: Temp controllers in cooking appliances
Reply #20 - Dec 6^th, 2016 at 3:48pm

Sprintcyclist wrote on Dec 6^th, 2016 at 8:05am:

bogarde73 wrote on Dec 6^th, 2016 at 6:48am:

When you set the temperature control on an oven or anything else, that is not giving you the actual temperature that the food, eg meat, is heating to.

You have to use one of those stick-in food thermometers to find that out.
So you might stick a roast in the oven at 200 but when you look at the thermometer it will tell you that when it reaches say 80 in the centre it is ready for underdone or some higher figure for well done etc.

I think I'm right in saying the temp control just gives you the environment temp not the food temp.

Yes, that's my understanding.

A proportional control is significantly different to the 'normal' cheap controller used in the electric frying pans.

A proportional controller applies 100% power when it is heating, say heating up to 120 degrees.
Once the temp gets close to 120 degrees the power supplied drops back to 80%, then 50%.

So the temp reaches 120 degrees and does not go too much higher.
Once the temp drops the power applied rises a bit.

So the temp in the pan will vary from 115 to 125 degrees when it is set to 120.

If a pan had that, it'ld be the rolls Royce for cooking.

those limits will be a LOT closer.

Call it from 118 to 122 degrees.

Temp is always perfect.

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greggerypeccary Gold Member Offline Australian Politics Posts: 131414 Gender:	Re: Temp controllers in cooking appliances Reply #21 - Dec 6^th, 2016 at 3:54pm Does this get you hot, Sprint?
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Unforgiven

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Re: Temp controllers in cooking appliances
Reply #22 - Dec 6^th, 2016 at 4:05pm

Sprintcyclist wrote on Dec 6^th, 2016 at 3:48pm:

Sprintcyclist wrote on Dec 6^th, 2016 at 8:05am:

bogarde73 wrote on Dec 6^th, 2016 at 6:48am:

When you set the temperature control on an oven or anything else, that is not giving you the actual temperature that the food, eg meat, is heating to.

You have to use one of those stick-in food thermometers to find that out.
So you might stick a roast in the oven at 200 but when you look at the thermometer it will tell you that when it reaches say 80 in the centre it is ready for underdone or some higher figure for well done etc.

I think I'm right in saying the temp control just gives you the environment temp not the food temp.

Yes, that's my understanding.

A proportional control is significantly different to the 'normal' cheap controller used in the electric frying pans.

A proportional controller applies 100% power when it is heating, say heating up to 120 degrees.
Once the temp gets close to 120 degrees the power supplied drops back to 80%, then 50%.

So the temp reaches 120 degrees and does not go too much higher.
Once the temp drops the power applied rises a bit.

So the temp in the pan will vary from 115 to 125 degrees when it is set to 120.

If a pan had that, it'ld be the rolls Royce for cooking.

those limits will be a LOT closer.

Call it from 118 to 122 degrees.

Temp is always perfect.

Give me $500,000 and I will have one designed and delivered to you.

PID controller? Proportional, integral or derivative control?

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Its time Gold Member Offline Boot libs out Posts: 25639 Gender:	Re: Temp controllers in cooking appliances Reply #23 - Dec 6^th, 2016 at 8:25pm greggerypeccary wrote on Dec 6^th, 2016 at 3:54pm: Does this get you hot, Sprint? http://www.stencilrevolution.com/photopost/2013/04/How-Do-You-Like-Your-Eggs-by-...
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greggerypeccary Gold Member Offline Australian Politics Posts: 131414 Gender:	Re: Temp controllers in cooking appliances Reply #24 - Dec 6^th, 2016 at 9:09pm Its time wrote on Dec 6^th, 2016 at 8:25pm: greggerypeccary wrote on Dec 6^th, 2016 at 3:54pm: Does this get you hot, Sprint? http://www.stencilrevolution.com/photopost/2013/04/How-Do-You-Like-Your-Eggs-by-... I think he had to control his temperature after seeing that.
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Sprintcyclist

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Re: Temp controllers in cooking appliances
Reply #25 - Dec 7^th, 2016 at 7:34pm

Unforgiven wrote on Dec 6^th, 2016 at 4:05pm:

Sprintcyclist wrote on Dec 6^th, 2016 at 3:48pm:

.....................those limits will be a LOT closer.

Call it from 118 to 122 degrees.

Temp is always perfect.

Give me $500,000 and I will have one designed and delivered to you.

PID controller? Proportional, integral or derivative control?

yes, PIDs are pretty cheap.

Make one of those, it'ld be a great seller.

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Modern Classic Right Wing

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Sprintcyclist

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Re: Temp controllers in cooking appliances
Reply #26 - Dec 9^th, 2016 at 5:20pm

Quote:

...........................At lower temperatures (not even THAT low) the element simply cycles on at searing temps then turns off, completely inappropriate! Cooking eggs slowly to have the element switch on for 5 secs near the end of cooking to over do and burn them, enraging!

Try to simmer something at anything less than a raging boil with constant stirring to avoid burning, and you get 5 secs of raging boil followed by a minute of nothing.

Cooking some meat on a steady even temp? Nope it gets a good sear every few minutes. Useless!!.................

http://www.productreview.com.au/p/breville-bef500.html

this is what i mean

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Redmond Neck Gold Member Offline OzPolitic Posts: 20684 ACT Gender:	Re: Temp controllers in cooking appliances Reply #27 - Dec 9^th, 2016 at 6:58pm I know what you are on about mate, but I doubt any electric frypan has a temp control like you suggest. Agree it would be better.
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