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 >>> >>> -- >>> ------------------------------------------------------------------------ >>> 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 >>> >>> >>> _______________________________________________ >>> time-nuts mailing list -- [email protected] >>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >>> >>> >> >> >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> >> > > -- > ------------------------------------------------------------------------ > 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 > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
