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7484887 |
Digitally modified resistive output for a temperature sensor
A method for digitally controlling the resistive output of a temperature probe is disclosed. The system is comprised of a temperature sensor, a processor and a means under the control of the...
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7484886 |
Bolometric on-chip temperature sensor
Disclosed are embodiments of an improved on-chip temperature sensing circuit, based on bolometry, which provides self calibration of the on-chip temperature sensors for ideality and an associated...
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7118273 |
System for on-chip temperature measurement in integrated circuits
A thermal sensor providing simultaneous measurement of two diodes. A first diode and a second diode are coupled to a first current source and a second current source, respectively. The ratio of the...
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7108420 |
System for on-chip temperature measurement in integrated circuits
A thermal sensor providing simultaneous measurement of two diodes. A first diode and a second diode are coupled to a first current source and a second current source, respectively. The ratio of the...
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6921198 |
Patient temperature repeating system and method
A patient temperature repeating system and a method of repeating patient temperature information from a resistive-type patient temperature sensor allow one or more medical instruments to utilize a...
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5655305 |
High precision electronic digital thermometer
A microprocessor controlled high precision electronic digital thermometer which is capable of producing highly accurate temperature readings while using relatively inexpensive components. The...
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5098200 |
Dual range temperature monitoring circuits
A temperature monitoring system provides a first, coarse temperature output signal, and a second, fine temperature output signal based on the first, coarse output signal. The fine output signal has...
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4627745 |
Fast responding temperature transducer circuit
There is disclosed a fast responding temperature transducer circuit which provides an accurate steady-state output representing temperature in short periods of time. The circuit includes a...
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4475823 |
Self-calibrating thermometer
A calibration system for a temperature sensing probe in an electronic thermometer, including: a reference temperature element having a characteristic that varies as a function of temperature; a...
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4191197 |
Touch free tympanic thermometer
A thermometer system for blowing heated air having a temperature value close to the temperature value of body temperature directly onto the tympanic membrane from tubing apparatus, and measuring...
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4179927 |
Temperature sensing device
A device for sensing temperature changes at an object, specifically within a transformer or the like, is disclosed herein. This device utilizes an electrically non-conductive sensor including a...
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4177423 |
Bridge circuits
A bridge circuit for measuring or use in a temperature-responsive servo-mechanism. A chain of four or alternatively five resistors is connected between power supply rails, an inner two resistors of...
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4075882 |
Temperature calibration system
A system for calibration of a temperature probe at temperatures both above and below ambient. A dry type heatsink for receiving the temperature probe, with a plurality of thermo-electric modules...
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4022063 |
Electromechanical digital thermometer
A highly accurate low-cost electronic thermometer with digital readout, intended primarily for clinical use. Temperature sensing is accomplished by a thermistor in a probe assembly which includes a...
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4000454 |
Linearization apparatus for a non-linear resistance transducer in a self-balancing bridge connection
A linearization apparatus for a non-linear resistance transducer in a self-balancing bridge connection, in which apparatus the non-linear characteristic of the resistance transducer is linearized...
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3992667 |
Electro-thermal readout coulometer
A method and apparatus are disclosed for reading a coulometer by sensing the temperature of the electrolyte. A preferred embodiment comprises a pair of temperature sensitive elements spaced apart...
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3964315 |
Apparatus including novel bridge circuit
A bridge circuit for measuring the D.C. resistance of a resistive element having an induced A.C. current comprises impedance legs whereby the A.C. component can be balanced out. The invention has...
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3906797 |
Electronic time and temperature measuring system
An electronic thermometer system comprising a temperature sensing circuit for providing an analog signal representative of variations in temperature; a temperature measuring circuit for providing a...
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3897685 |
Medical thermometer
A medical thermometer comprises a probe containing a thermistor, connected in a resistance-comparing bridge forming part of an electrical circuit. The electrical circuit includes means for...
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3882725 |
Temperature measuring apparatus and method with resistance amplifier
Apparatus for operating a bridge network incorporating a resistance temperature detector (RTD) in the null balance configuration. The bridge is balanced by applying a feedback signal from a first...
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3785207 |
DIGITAL READOUT INSTRUMENT EMPLOYING ENABLEMENT CIRCUITS FOR SYSTEM WHEN UNDER READING CONDITIONS
A digital readout thermometer employing a resistance bridge with a temperature sensitive element such as a thermistor in one leg of the bridge and including a motor driven adjustable resistance or...
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3765244 |
DIGITAL READOUT INSTRUMENT EMPLOYING TRANSDUCER AND DOUBLE D.C. POWER SUPPLY
A digital readout thermometer employing a resistance bridge with a temperature sensitive resistance such as a thermistor in one leg of the bridge and including a motor driven adjustable resistance...
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3759083 |
SENSING ELEMENT RESPONSE TIME MEASURING SYSTEM
A resistance temperature detector, which is one arm of a bridge circuit, is heated by an electric current separate from the bridge exciting current, to a temperature higher than its environmental...
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3745835 |
AIR STATIC PRESSURE AND TEMPERATURE MEASURING DEVICE FOR REMOTE LOCATIONS IN STORED POROUS MATERIAL
Device for use in measuring positive or negative air static pressure and temperature at remote locations within a mass of porous material more easily and precisely with one probing of the device.
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3701281 |
MEASURING INSTALLATION
A circuit arrangement for measuring a characteristic of a moving member wherein an electric current, representative of the characteristic is generated on the moving member and the value thereof...
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3680384 |
TWO WIRE TELEMETRY SYSTEM
Measuring circuitry including a current controller which has an internal amplifier, and which controls current in response to differential input signals, is excited by an external power source. A...
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3579107 |
INDICATING CONDITION CONTROLLER HAVING A FACE INCLUDING A ROTATABLE SCALE PLATE COOPERATING WITH A WIDE ANGLE 250° METER
An indicating temperature controller for use in controlling the temperature of an area and indicating the temperature of the area, the controller including a variable magnitude setpoint voltage...
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3545273 |
ELECTRONIC THERMOMETER
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3534809 |
TEMPERATURE MEASURING DEVICES
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3517555 |
RADIO FREQUENCY HAZARD DETECTOR
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3513313 |
RADIATION DETECTION APPARATUS
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3494196 |
ELECTRONIC THERMOMETER
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3478570 |
ELECTRICAL CLINICAL THERMOMETER
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3454769 |
TWO-COLOUR RADIATION RATIO PYROMETER
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3447376 |
HIGH ACCURACY TEMPERATURE MEASURING DEVICES
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3444739 |
RADIANT ENERGY MEASURING INSTRUMENT
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3429183 |
TEMPERATURE AVERAGING SYSTEM
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3421375 |
TEMPERATURE MEASUREMENT SYSTEM
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3406335 |
Apparatus for recording temperature changes in a resistive element due to self-heating
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3394591 |
HEAT MOTOR AND SELF-BALANCING POTENTIOMETER
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3379973 |
Impedance measuring circuit having the unknown impedance in the feedback path of an amplifier
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3363467 |
Methods of measurement applicable in the improvement or control of manufacture
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3339414 |
Direct reading resistance thermometer
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3324706 |
Apparatus for temperature compensation of strain gages
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3303701 |
Non-contact temperature measurement system
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3299709 |
Resistance thermometer system
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3287978 |
Electrical bridge circuit
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3225596 |
Condition indicating system
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3207980 |
Apparatus including an automatic balancing bridge for measuring the temperature of motor windings and the like, including thermaly controlled ballast resistance means
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3201990 |
Electric measuring device for mixed fluid temperature and velocity
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