PT100-resistor heating_and_sensing-module

Hi all,

... maybe it's interesting for someone else too:

For heating a small volume over 300°C i experimented with a pair of common PT100-resitors - one as sensor, the other as heater.

With 30 Volts and 90 Milliamperes the 'heater' reached over 500°C without problems

The advantage of measuring with PT100 is the very good linearity ( Temp~(R-100)/0.385 )

The heating-curve was nearly linear too - from a flat start at roomtemp it bent to a nearly perfect linear branch from 60°C until 500°C - then my HT-isolation melted, bubbled and caused so some thermic disturbances ...

Viktor

Thanks..as per ur suggestion i am using..for Seebeck measurements. it is working well

... glad, I could help

What's your target resolution? - in another application with high-res PID temp controlling I was experimenting with NI200 and PT100 for comparing their abilities - got both accurate to 0.001 degC

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Viktor
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