How do fridge freezers ever work?

[Undersized hippopotamus]

What is cheaper than what?

[Undersized hippopotamus]

I just calibrated (it has an adjustment) a digital thermometer to read precisely the same as a room thermometer (traditional red alcohol). They both agreed on -4.5C. Then I moved them both somewhere else. One said it was now 5C WARMER, and the other said 1C COLDER. WTF? I think I'd get a more accurate reading using my finger.

[Rod Speed]

The best of them are.

That's because you buy cheap chinese shit.

The Hue movement sensors have a thermometer in them and when you put them all together, they do read the same temp.

[Rod Speed]

The micro is much cheaper than two stats and some valves.

[Rod Speed]

You must have done something stupid like hold the sensor.

Fraid not.

[Undersized hippopotamus]

But you still need the valves and stats. How do you think a microchip magically makes the refridgerant go a different way? How do you think it magically senses the temperature without a stat?

[Undersized hippopotamus]

ge

te:

It can't be hard to make them accurate. The most accurate is in fact a =

99p garden thermometer with red alcohol in it. And the least accurate i= s a =A320 digital stat with remote sensor.

So you took loads of the same model/make, funny how they agree.

[Rod Speed]

Nope, just a couple of temperature sensors instead of the bimetallic stats and its box etc.

A sensor is much cheaper than a stat.

[Rod Speed]

Its harder than you might think.

Even that's not trivial to make accurate. Have a look at the difference in price between lab alcohol thermometers and the cheapest chinese shit.

How are you deciding how accurate it is ?

They read the same as the lab thermometer. I stole some from work and I used to run the town's weather station at work.

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