Abstract: Apparatus for averaging the temperatures of a plurality of temperature probes in an oven automatically eliminates the temperature readings of probes outside a predetermined temperature differential from the probe temperature average. The apparatus utilizes a microcomputer to provide high energy load minimization for an oven with multiple heating capabilities.

Abstract: The electronic clinical thermometer in accordance with the present invention comprises a thermometric oscillator for converting a variation in the temperature sensitive resistance to a frequency corresponding to the temperature, a thermometric counter for counting the oscillation frequency of the thermometric oscillator to convert the frequency to a temperature value, a maximum value memory circuit for detecting the maximum value by comparing in succession the content of the thermometric counter, a display circuit for digitally displaying the content of the maximum value memory circuit, and a controlling circuit for controlling the thermometric oscillator so as to discontinue the oscillation of the thermometric oscillator at a prescribed time after the beginning of temperature detection or detection of a maximum value.

Abstract: An electronic thermometer comprises an oscillator operatively connectable to a temperature-sensitive resistance, a counter for counting an oscillation frequency of the oscillator, a timer for timekeeping a time of counting by providing the counter, a memory responsive to the counter for storing temperature data, in such a manner that each address stores a specific data representative of the presence and the absence of the temperature increase in a divided temperature measurement interval, and a calculation circuit for calculating temperature data with the count of the counter and the specific data of the memory.

Abstract: An electronic thermometer having a temperature sensing element for sensing a temperature and providing, over time, a series of temperature related electric parameters, and a data storing circuit connected to the temperature sensing element for storing the series of temperature related electric parameters. A data transmitting device is included which has an output and which is connected to the data storing circuit for transmitting the mentioned series of temperature related electric parameters upon command. A connector connected to the output of the data transmitting device has a command input which, when connected to a power source, receives an electrical command for commanding the data transmitting device to transmit data, and further has a data output device for providing thereon the data transmitted from the data transmitting device.

Abstract: In a circuit for electrothermal measurement of level compensated for ambient temperature which has a switched source of constant current (2) for a resistance probe (1), a first variable formed from an initial voltage U.sub.0 on the resistance probe at the start of a heating period is compared by a comparator (14) with a second variable formed from a heating voltage U.sub.1 at the end of a heating period. One of these two variables, in this case the first variable, is formed in accordance with a time integral and used as basis for the comparison with the other variable. For the formation of the integral, a resistor (10) and a capacitor (9) are components of an integrator whose input can be coupled to the resistance probe (1) via a first sample and hold member (4, 5) for the initial voltage U.sub.0. The output of the integrator is connected to a first input (13) of a comparator (14).

Abstract: A thermistor thermometer has a reference resistance correcting section for controlling the number of pulses of an oscillation signal to a predetermined reference value. The oscillation signal is sampled in response to a measuring time signal at a reference temperature. The reference temperature is given as a predetermined temperature below a possible operating temperature range. The thermistor thermometer also has a sensitivity correcting section for operating the thermometer for first and second operating intervals at different counting rates. The first and second operating intervals constitute a sampling period of the measuring time signal. The first and second operating intervals of the sensitivity correcting section are switched over in response to a reference count signal from a temperature counter. The temperature counter counts the oscillation signals sampled in response to the measuring time signal and generates temperature data.

Abstract: Apparatus for monitoring the level of liquid in a tank or reservoir comprises a probe formed by a resistive metal element having a high temperature coefficient, and a supply means for the probe. The apparatus further comprises a voltage-frequency converter which is connected in parallel with the probe, two counters which are connected in parallel to the output of the converter, and a subtracting means connected to the outputs of the counters. A time base controls operation of the supply means during a complete cycle to effect a counting operation of the first counter for a given period of time at the beginning of a cycle, a counting operation of the second counter for the same period of time but at the end of the cycle, and operation of the subtracting means at the end of the cycle.

Abstract: An electronic clinical thermometer has a first oscillator producing a first temperature oscillating output signal, a second oscillator producing a second temperature oscillating output signal whose frequency is dependent on a measured temperature body temperature, a first counter and a second counter and operative to provide a gate signal after a predetermined number count. A first memory temporarily stores the count content of the first counter in response to the gate signal, and a second memory stores the count content of the first memory. A digital magnitude comparator compares the count content of the first and second memories and produces a corresponding comparison signal indicative of whether the count content of the first memory is greater or not greater than the count content of the second memory.

Abstract: An electronic clinical thermometer comprises oscillating circuitry for producing two oscillating output signals having respective frequency-temperature coefficients which are widely different from each other. A frequency dividing circuit frequency divides one of the two output signals to produce a gate timing signal which controls the gating of the other oscillating output signal to an up/down counter. A switch coacts with the frequency dividing circuit to enable selective changing of the frequency dividing ratio, and another switch coacts with the up/down counter to enable variable setting of the reference count value from which the counter begins to up-count the oscillating output signal to produce an output counter number indicative of the measured temperature. A display device is connected through a decoder driver circuit and a latch circuit to the up/down counter and displays indicia representative of the measured temperature.

Abstract: This invention relates to a thermometry device which measures temperature using an electronic calculator system. The device includes a resistor whose resistance value varies depending upon temperature, an oscillator providing a wave-form oscillating at a frequency which is dependent upon temperature, a clock generator providing reference clock pulses and a counter for counting the clock pulses within a length of time as defined by the frequency of the waveform divided by a factor. Temperature-related information is obtained from the results of the counting.

Abstract: A highly accurate electronic temperature sensor/controller system employs one or more sensing devices, a precision voltage reference, a pair of analog multiplexers, a voltage-to-frequency converter, a microcomputer, a keyboard, an output display, and one or more solid state switches.

Abstract: A heat meter (1) for registration of heat consumption on the basis of a temperature measured is provided which with a view to obtaining direct recording and/or display of the consumption is arranged as a unit which at least comprises temperature measuring means (20, 21), a time generator (23), an arithmetic unit (22) and a programmable store (25) which is adapted to store at least the registered heat consumption. The arithmetic unit (22) is adapted to receive information from said parts sufficient for it to compute a direct index of the heat consumption, e.g. stated in kWh.

Abstract: A programmable digital temperature controller apparatus utilizing a pair of binary-coded decimal units and a switching unit to generate a ten bit binary word which represents a pre-selected temperature in a temperature range. A pair of erasable programmable read only memory units store digital temperatures and temperature range information. The ten bit binary word determines which digital data from the memory units will be applied to a D/A converter unit and a pair of multiplexer units. One multiplexer unit controls the voltage per bit within the D/A converter unit while the other multiplexer unit generates a starting voltage. The output voltage from the D/A converter unit and the starting voltage are summed together to provide a voltage output signal which represent the pre-selected temperature.

Abstract: A method for indicating the thermal state of cooking appliances with an optical and/or acoustic signalling device, comprising the steps of: counting forward from a starting number in response to the heating means of the cooking appliance being switched on; and, counting backwards after the heating means of the cooking appliance has been switched off, the signalling device being switched on when the count exceeds a first number and being switched off when the count falls below a second number.

Abstract: Temperature of a heating device is controlled by a microprocessor in an electrical circuit which electrically communicates temperature control signals to the heating device. The control signals are generated from a predetermined compilation of data stored in the electrical circuit or from external data which can be entered and used to control the temperature in the heating device to a selectable value at a rapid rate or to achieve one or more temperatures at selected rates. The external data entry and control is provided by a human-electronic interface.

Abstract: A system for sensing or detecting changes in and accumulating data relating to variable quantities or conditions, for example temperature, is disclosed. In one instance, the system sensor is a mercury tube thermometer modified with conductors or contacts embedded in the glass walls of the mercury tube. As the temperature rises, the conductive material rises and performs a switching function with the embedded contacts closing an electrical circuit to which the contacts are connected. The circuit components include plurality of logic gates the inputs of which are connected to the switching contacts in a manner such that their outputs are singularly true in a sequence corresponding to the direction of temperature change. In another instance the sensor is a bimetallic strip, coil or thermal Bourdon tube and an arm or pointer needle mounted on an end of the strip or tube rotates in response to changes in the temperature being sensed.