I am trying to measure the temperature of a diameter 0.185mm wire. This wire is heated electrically. I need to know the temperature vs time information. How can I go about measuring it?
Other requirements - portable system, possible to hook up to computer if required.
Thanks
measuring temperature of a diameter 0.185mm wire
Hi,
This is a difficult one. You cannot use any sensor which contacts the wire as that would cool it down.
First thought would be to try a non-contact infra-red sensing thermometer.
http://www.k-instruments.co.uk/acatalog ... oring.html
Only other way I can think of is to very accurately measure the current through the wire and the voltage across the section that is getting hot. This will give you the resistance. Comparing the resistance when cold to the hot resistance will give an indication of the actual temperature of the wire. (resistance changes with temperature).
PeterF.
This is a difficult one. You cannot use any sensor which contacts the wire as that would cool it down.
First thought would be to try a non-contact infra-red sensing thermometer.
http://www.k-instruments.co.uk/acatalog ... oring.html
Only other way I can think of is to very accurately measure the current through the wire and the voltage across the section that is getting hot. This will give you the resistance. Comparing the resistance when cold to the hot resistance will give an indication of the actual temperature of the wire. (resistance changes with temperature).
PeterF.