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This paper introduces a simple theoretical model for the response time of thermal flow sensors. Response time is defined here as the time needed by the sensor output signal to reach 63.2% of amplitude due to a change of fluid flow. This model uses the finite-difference method to solve the heat transfer equations, taking into consideration the transient(More)
— Frequency differential magnetic induction tomo-graphy allows the reconstruction of images of relative conductivity spectra with the aid of magnetic AC fields and coil arrays. We describe a new 16-channel hardware with an analog bandwidth of 50 kHz – 1.5 MHz which covers a good part of the ß-dispersion of many tissues. At each acquisition time 8 of the 16(More)
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