Electrical Pressure Measuring devices

Prepared by: ROMEO LUNA Jr.

• Why Electrical Pressure Transducers?

• Has high accuracy than field pressure gauges.• Transmission requirements for remote display as electric signal

transmission can be through cable or cordless.• Electric signals give quicker responses and high accuracy in digital

measurements.• The linearity property of the electric signal produced to pressure applied

favors simplicity.• They can be used for extreme pressure applications, i.e. high vacuum and

pressure measurements.

Strain Gauge Pressure Transducer

Capacitive Pressure Transducer

C=ε0 εr A/dWhere, C = the capacitance of a capacitor in faradA = area of each plate in m2

d = distance between two plates in mεr= dielectric constant ε0 = 8.854*10^-12 farad/m2

Potentiometric Pressure Transducer

Resonating Wire Pressure Transducer

Piezoelectric Pressure Transducer

Magnetic (LVDT) Pressure Transducer

Optical Pressure Transducer

Thank you!!!