Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1974-12-30
1977-04-26
Demeo, Palmer C.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
340237S, G01N 2762, G08B 1712
Patent
active
040204154
ABSTRACT:
A combustion product indicating device for use as a calibration or surveying instrument is disclosed. The device senses the presence of combustion and provides an indication of the same including an indication of the amount of combustion sensed within predetermined limits. An ionization detector is utilized to sense the products of combustion and provide an output indicative thereof, which output is coupled through a field effect transistor to a pair of operational amplifiers, which amplifiers function as followers with the latter amplifier having a reference input that may be varied to adjust the reading of a meter, which meter receives the output from the operational amplifiers. Optional circuitry is also provided for providing a voltage output that varies within predetermined limits and is indicative of the amount of combustion sensed. A method for calibrating combustion detectors is also disclosed.
REFERENCES:
patent: 3718919 (1973-02-01), Sasaki
patent: 3882477 (1975-05-01), Muellar
DeMeo Palmer C.
Sunderdick Vincent J.
Unitec, Inc.
LandOfFree
Combustion product indicator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Combustion product indicator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Combustion product indicator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2089795