Yes, using a quartz resonator to sense the force and other to provide
temperature compensation. I remember that it was a very sensitive
device, and althought several kilobucks about fifteen years ago, it was
not prohibitive. That unit was a of the type that appears in the drawing
'high pressure design' here
http://www.paroscientific.com/pdf/dqadvantage.pdf since it was intended
to work inmersed in the sea.
Regards,
Javier
J. Forster escribió:
Oops. It looks like they sense the force from the Bourdon tube, rather
than the displacement.
-John
===============
Yes... it was not cheap, exactly :) It was from this company:
http://www.paroscientific.com/
Regards,
Javier
J. Forster escribió:
Oh, I know there are quartz transducers like accelerometers, pressure
and
force gages, etc. from companies like Endevco, Kiag/Krystal, and others.
But in my experience they are lab instruments costing a bundle.
The airbag sensors are cheap... likely a buck or twp. Hence the use of
silicon.
Best,
-John
===========
J. Forster escribió:
As you feel your heart beat, google for Quartz Pressure Sensor
Again, I think these are semiconductor sensors.
Yes, but there are also quartz pressure sensors. Long time ago I used a
equipment to measure water columns (and hence sea waves height) that
used a quartz-based pressure sensor. It was a very sensitive equipment.
Regards,
Javier
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Javier Herrero EMAIL: [email protected]
HV Sistemas S.L. PHONE: +34 949 336 806
Los Charcones, 17A FAX: +34 949 336 792
19170 El Casar - Guadalajara - Spain WEB: http://www.hvsistemas.com
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