ELDEC SOS pressure sensors are based on a
four-element piezoresistive bridge. As pressure is increased,
the resistance changes to produce a differential voltage output
from nominal 10 vdc excitation. See the
Pressure
Sensors, How They Work section for a diagram and explanation
detail.
ELDEC SOS pressure sensors provide high
performance through the unique properties of silicon strain
gages that are molecularly bonded to a sapphire diaphragm. This
mono-crystalline combination structure provides inherent high
repeatability and stability without hysteresis over a wide
temperature range, from cryogenic to beyond 300 degrees C.
ELDEC's advanced design capability applies this technology to
maximize performance in your system.
ELDEC SOS is capable of providing pressure
sensor accuracy within 0.01% FS by capitalizing on highly
repeatable and stable characteristics with negligible hysteresis
and using digital compensation methods. This level of accuracy
is typically only necessary in RVSM or other air data systems
but gives a high level of assurance in any application.
ELDEC provides core capability beyond the
level of just a sensor provider, including unique packaging
skills to match the pressure sensor to the installation, broad
electronics capability for analog, frequency, or digital
interfaces, and joint systems and program cooperation. Send an
email to Ask the Expert
for further information on applying ELDEC SOS pressure sensing
technology to your program.
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