A Pt1000 resistance thermometer ( at its operating point) is mounted with a…

PHYSICS · Multi-part · Fermi University Physics · Electronics, Instrumentation & Communication · Sensors, detectors and experimental instrumentation · Sensors, detectors and experimental instrumentation

Electronics for Measurement, Ch Sensors, transducers and the measurement front end

Problem

A Pt1000 resistance thermometer (

R = 1000\,\Omega

at its operating point) is mounted with a dissipation constant

D_{\rm th} = 4\,\mathrm{mW\,K^{-1}}

in still air. ((a)) Calculate the self-heating error when it is excited with a constant current of

0.5\,\mathrm{mA}

. ((b)) Calculate the self-heating error when it is excited with a constant current of

2\,\mathrm{mA}

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