Heating of the RTD wire leads
Heating of the RTD wire leads
(OP)
Hi,
I'm working on a temporary fixture that will use an RTD to measure the temperature of a flat surface. The design might allow for the wires to the RTD to heat up to about 300F. Will this effect the performance/accuracy of the RTD significantly?
Any insight will be helpful.
I'm working on a temporary fixture that will use an RTD to measure the temperature of a flat surface. The design might allow for the wires to the RTD to heat up to about 300F. Will this effect the performance/accuracy of the RTD significantly?
Any insight will be helpful.





RE: Heating of the RTD wire leads
TTFN
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RE: Heating of the RTD wire leads
First, the allowable temperature of the wiring to the RTD probably limits the temperature of the RTD environment but heat transfer from the wires should be miniscule.
RE: Heating of the RTD wire leads
230°F rise changes that resistance by 5.3 ohms
5 ohm error in 100 ohm platinum RTD is about 2°C error
TTFN
FAQ731-376: Eng-Tips.com Forum Policies
RE: Heating of the RTD wire leads
RE: Heating of the RTD wire leads
The RTD is not fixed to the surface that it is measuring; contact will be done with slight pressure and no thermal conductive epoxy between the RTD and measured surface will be used. Can I expect accurate results?
Thanks for your help.
RE: Heating of the RTD wire leads
RE: Heating of the RTD wire leads
how to you intend to account for radiation effects in your measurment?