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A resistor at 150°C...how?

  • Thread starter Francesco Piantedosi
  • Start date
S

Spehro Pefhany

Jan 1, 1970
0
Given the limited budget, I wonder if it would be possible to
derive the temperature from the resistance of the nichrome wire.
It all depends on the tempco of the wire, of course. Just a thought.

Yes, although NiCr is designed to have a relatively low tempco, and
usually controlling the heater temperature itself is a particularly
crummy approach from a controls pov.


Best regards,
Spehro Pefhany
 
J

John Larkin

Jan 1, 1970
0
Given the limited budget, I wonder if it would be possible to
derive the temperature from the resistance of the nichrome wire.
It all depends on the tempco of the wire, of course. Just a thought.

Minco makes flexprint stick-on things that are simultaneously heaters
and sensors. Of course, they only sense their own temperature, not the
temp of the thing they're stuck to, so there's a coupling error. You'd
have the same problem heating air... the heater itself will be hotter
than the exit air stream.

John
 
J

John Fields

Jan 1, 1970
0
Minco makes flexprint stick-on things that are simultaneously heaters
and sensors. Of course, they only sense their own temperature, not the
temp of the thing they're stuck to, so there's a coupling error. You'd
have the same problem heating air... the heater itself will be hotter
than the exit air stream.
 
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