Sensor Installation Handbook Preface 3rd edition - Siemens ...
Sensor Installation Handbook Preface 3rd edition - Siemens ...
Sensor Installation Handbook Preface 3rd edition - Siemens ...
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Temperature<br />
66<br />
Temperature<br />
Deflection of metals<br />
Metals respond to a change in temperature by a corresponding expansion<br />
(deflection). <strong>Sensor</strong>s can be constructed in various ways to transfer this<br />
response.<br />
Bimetal strips:<br />
A bimetal strip is composed of two strips of metal with different coefficients<br />
of expansion, bonded together. As the temperature changes, one<br />
material (A) expands more than the other, causing the strip to bend.<br />
The curvature can be converted into an output signal.<br />
Material Construction Function System<br />
Bimetal rod – Deflection<br />
Steel/brass<br />
Invar/brass<br />
Metal A = Large expansion<br />
Metal B = Smaller expansion