Measuring and testing – Gas analysis – By vibration
Patent
1994-04-19
1995-04-18
Williams, Hezron E.
Measuring and testing
Gas analysis
By vibration
73579, 73 3105, G01N 3106, G01K 1122
Patent
active
054068290
ABSTRACT:
A temperature control system for acoustic wave chemical sensors monitors the frequency output from a reference sensor packaged within a heat conductive case with a test sensor. Since the frequency output fluctuates as a function of temperature, variations in frequency from a nominal value representing a desired steady state temperature for the sensors are detected and used as a control signal for a heating element attached to the heat conductive case.
REFERENCES:
patent: 3164004 (1965-01-01), King, Jr.
patent: 3756068 (1973-09-01), Villarroel et al.
patent: 3848457 (1974-11-01), Behymer
patent: 3879992 (1975-04-01), Bartera
patent: 3895912 (1975-07-01), Naumann
patent: 4258563 (1981-03-01), Yasuda et al.
patent: 4312228 (1982-01-01), Wohltjen
patent: 4399686 (1983-08-01), Kindlund et al.
patent: 4498330 (1985-02-01), Hosoya
patent: 4503703 (1985-03-01), Pagel
patent: 4533520 (1985-08-01), Bossart et al.
patent: 4730478 (1988-03-01), Gedeon
patent: 4759210 (1988-07-01), Wohltjen
patent: 4860573 (1989-08-01), Barendz et al.
patent: 5012668 (1991-05-01), Haworth
patent: 5042288 (1991-08-01), Vig
patent: 5149197 (1992-09-01), Rokos et al.
patent: 5289715 (1994-03-01), Staples et al.
patent: 5323636 (1994-06-01), McGowan et al.
"Surface-Acoustic-Wave Piezoelectric Microbalance" Langley Research Center, Hampton, Vir.
Pepper Steven H.
Ravel Mihir K.
Gray Francis I.
Tektronix Inc.
Wiggins J. David
Williams Hezron E.
Winkelman John D.
LandOfFree
Temperature control for chemical sensors does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Temperature control for chemical sensors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature control for chemical sensors will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-61001