Measuring temperature of a current carrying conductor?

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Discussion Overview

The discussion revolves around methods for measuring the temperature of a current-carrying conductor, particularly focusing on the increase in temperature due to electrical heating. Participants explore various techniques, including the use of thermocouples, infrared thermometers, and calorimetry, while also considering practical constraints such as budget and accessibility.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Homework-related

Main Points Raised

  • One participant inquires about measuring temperature and mentions the potential use of heat transfer convection equations, highlighting the need for specific material properties.
  • Another participant questions the accuracy required and the accessibility of the conductor, suggesting that these factors may influence the measurement method.
  • A suggestion is made to use a non-contact infrared thermometer, with a link provided to manufacturers of such instruments.
  • Some participants advocate for infrared thermometers as a suitable option, although one expresses concern about their cost.
  • Another participant proposes building a calorimeter to measure the heat emitted by the conductor, which could then be used to calculate the temperature change based on the specific heat of the material.
  • Questions are raised regarding the budget for the project and the availability of manufacturing resources to create a custom probe.
  • There are inquiries about the duration of the measurement need and the possibility of hiring equipment.

Areas of Agreement / Disagreement

Participants express a variety of methods for measuring temperature, with no consensus on a single best approach. The discussion includes both practical suggestions and concerns regarding cost and accessibility, indicating multiple competing views on the best method to use.

Contextual Notes

Participants mention the need for specific material properties and the potential limitations of various measurement methods, but these aspects remain unresolved within the discussion.

Who May Find This Useful

This discussion may be useful for individuals interested in experimental physics, electrical engineering, or materials science, particularly those looking for practical methods to measure temperature in conductive materials.

firecool1
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how do i measure temperature of a current carrying conductor? i need to know the increase in temperature as i heat it up by passing a current through it. i read somewhere that i could use heat transfer convection equations to find it, but then i would need the precise value of the heat transfer coefficient and specific heat of the material, which i don't have? will any other method work? will a thermocouple work on a current carrying conductor? please help.
 
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How accurate do you need to be? What voltage is the conducor at? Is it easily accessable?
 
IR thermometer is your best bet
 
thanks everyone! :D
but ir thermometers are way too costly... :(
 
what kind of budget do you have for this project?

can you build a calorimeter? then you'd know how many joules it emits in a given time. from that, you can use the specific heat of the material to find the change in temperature. add that number to room temperature, and you'll have some idea

what about these: http://www.omega.com/toc_asp/subsectionSC.asp?subsection=A03&book=Temperature

what kind of manufacturing apparatus do you have access to? can you make your own probe?
 
How long do you need it for?
Have you considered hiring?
 

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