Pressure Transducers
Pressure Transducers
Pressure Transducers
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Example: p<br />
Variable capacitance transducers<br />
This capacitance transducer is used to<br />
determine the level of liquid hydrogen.<br />
The capacitance between the central<br />
rod and the surrounding tube varies with<br />
the changing dielectric constant KK,<br />
varying because of the changing liquid<br />
level.<br />
C<br />
=<br />
KS(<br />
N −1)<br />
d<br />
Capacitance pickup for determining<br />
level of liquid hydrogen<br />
C: capacitance<br />
K: dielectric constant<br />
S: Area of one side of one plate p<br />
N: Number of plates<br />
d: distance between two adjacent plates<br />
AE 547 Experimental Aerodynamics D. F. Kurtulus- 2008
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