Patents
Sitemap › G01 - Measuring; Testing › G01R - Measuring electric variables; Measuring magnetic variables › G01R 21 - Arrangements for measuring electric power or power factor
Patents for G01R 21 - Arrangements for measuring electric power or power factor (6,609)
08/1983
08/17/1983EP0085769A1 Electricity meters
08/16/1983CA1152217A1 Data processor apparatus for multitariff meter
08/03/1983EP0084634A1 Electricity meters
08/02/1983US4396915 Automatic meter reading and control system
07/1983
07/12/1983US4393501 Line protocol for communication system
07/12/1983CA1149920A1 Circuit interrupter with energy management functions
07/05/1983US4392106 Non-contact device for monitoring electrical pulse signals
06/1983
06/28/1983US4390876 Electric utility demand limiting device and method
06/28/1983US4390839 Method and apparatus for tone controlled variable sensitivity time-of-day watt-hour metering
06/14/1983US4388690 Automatic meter reading transponder
06/14/1983US4388611 Electricity billing meter having unique A/D conversion system
05/1983
05/31/1983CA1147388A1 Programmable electronic real-time load controller providing demand limit control
05/24/1983US4385273 Transducer for measuring a current-generated magnetic field
05/10/1983US4383210 Apparatus and method for recharging an energy storage device
04/1983
04/20/1983EP0076809A1 Multiple rate electrical energy metering apparatus.
04/06/1983EP0075555A1 System for monitoring utility usage
03/1983
03/29/1983US4378524 Electronic three-phase watt-hour meter
03/29/1983CA1143843A1 Meters for measuring electrical energy consumption
03/02/1983EP0072857A1 Data communication system.
03/01/1983CA1142229A1 Electronic watthour meter
02/1983
02/15/1983US4373809 Solar energy flux integrator
01/1983
01/11/1983US4368519 Energy utilization or consumption recording method
01/11/1983US4368424 Mutual inductance current transducer for AC electric energy meters
01/05/1983EP0068081A1 Hall element device
12/1982
12/21/1982US4365302 High accuracy AC electric energy metering system
12/21/1982US4364396 Circuit and method for measuring PSA output and energy
12/09/1982WO1982004324A1 Time division multiplier transducer with digitally derived phase shift adjustment for reactive power and energy measurement
11/1982
11/30/1982US4361872 Measuring apparatus for determining the effective value of the power demand of an energy consumer over a period of calculation
11/30/1982CA1136706A1 Electronic energy consumption meter and system with automatic error correction
11/24/1982EP0065132A1 Device for calculating the tariff allocated to a consumer of a fluid or of energy, in particular electrical energy
11/23/1982US4360879 Power measuring device
11/16/1982US4359684 Electronic watt-hour meter
11/09/1982CA1135364A1 Method and apparatus for measuring the degree of fullness of a mill driven by an electric motor
11/09/1982CA1135340A1 Digital processing system for time-of-day and demand meter display
11/02/1982US4357665 Programmable electronic real-time load controller providing demand limit control
11/02/1982CA1134908A1 Apparatus for controlling electrical power consumption
10/1982
10/27/1982EP0063402A1 Multi-function electricity billing meter
10/27/1982EP0063306A1 Electronic meter operating with capacitor charge exchange
10/27/1982EP0063282A1 Dual mode meter reading apparatus
10/26/1982US4356553 Method for the measuring of electrical power
10/26/1982US4356446 Time division multiplier transducer with selective phase shift
10/19/1982US4355361 Data processor apparatus for multitariff meter
10/14/1982WO1982003482A1 System for monitoring utility usage
10/12/1982US4354153 Microwave oven leakage detector and method of using same to test door seal leakage
09/1982
09/30/1982WO1982003276A1 Time division multiplier transducer with selective phase shift
09/29/1982EP0060920A2 Circuit for the electrical-energy measurement with power rating in a tariff range
09/28/1982US4352104 Remote meter reading apparatus
09/28/1982US4352009 Variable ratio totalizer
09/21/1982US4351028 Meters for measuring electrical energy consumption
09/21/1982US4350980 Electric meter consumption and demand communicator
09/16/1982WO1982003136A1 Power factor monitoring and control system for resistance welding
09/14/1982US4349879 Apparatus for controlling electrical power consumption
09/07/1982US4348730 System for metering electrical energy with remote time signal correlation
09/07/1982US4348638 Power measuring apparatus
09/02/1982WO1982002966A1 Data communication system
09/02/1982WO1982002954A1 Multiple rate electrical energy metering apparatus
08/1982
08/18/1982EP0057978A1 High accuracy AC electric energy metering system
08/17/1982US4345311 Electronic kilowatt-hour meter for measuring electrical energy consumption
08/17/1982CA1129964A1 Programmable time registering ac electric energy meter having electronic accumulators and display
08/17/1982CA1129963A1 Portable programmer-reader unit for programmable time registering electric energy meters
07/1982
07/27/1982US4341994 Power level measurement system
07/19/1982EP0049276A4 Terminal unit for automatic meter reading system.
07/19/1982EP0048746A4 Automatic meter reading system.
06/1982
06/29/1982CA1126822A1 System for monitoring electrical energy consumption
06/22/1982US4336447 Converter of meter-gauge readings
06/22/1982US4336445 Electrical totalizer
06/15/1982US4335437 Circuit interrupter with energy management functions
06/02/1982EP0052981A1 Hall element circuit arranged to eliminate in-phase voltage
06/02/1982EP0052635A1 Electricity meter.
06/01/1982US4333118 Load indicators for alternating-current motors
05/1982
05/26/1982EP0052256A1 Electronic device for recording reactive power and use of such a device
05/26/1982EP0052255A1 Electronic three-phase electricity meter
05/25/1982US4331915 Detection of tampering of kilowatt-hour meters for measuring electrical energy consumption
05/11/1982CA1123492A1 Totalizer apparatus for recording two data inputs on a single channel
05/04/1982CA1123104A1 Load control processor
04/1982
04/27/1982US4327416 Temperature compensation system for Hall effect element
04/15/1982WO1982001253A1 Electronic watt/var transducer
04/14/1982EP0049520A1 Electronic watt/var transducer
04/14/1982EP0049276A1 Terminal unit for automatic meter reading system.
04/07/1982EP0048746A1 Automatic meter reading system.
03/1982
03/23/1982US4321548 Frequency-voltage and voltage-frequency converters
03/23/1982US4321529 Power factor metering device
03/23/1982CA1120547A1 Electricity metering apparatus allowing for time dependent differential rate structure
03/02/1982CA1119256A1 Device for monitoring the performance of a transmitter
02/1982
02/23/1982US4317175 Dynamic rate integrating demand monitor
02/16/1982CA1118497A1 Programmable ac electric energy meter having radiation responsive external data interface
02/16/1982CA1118496A1 Auxiliary power supply and timer arrangement for time registering multifunctional electric energy meters
02/09/1982US4315251 Automatic meter reading and control system
02/09/1982US4315248 Load control system for standard electric utility meter
02/09/1982US4315212 Electronic watthour meter
02/09/1982CA1118048A1 Digital device for checking steadystate value of analogue signal
02/02/1982US4314201 Power measuring apparatus
02/02/1982CA1117600A1 Demand meter including means for selectively controlling the length of demand intervals
02/02/1982CA1117599A1 Time of day demand metering system and method
01/1982
01/27/1982EP0044528A1 Arrangement for measuring single phase reactive power of an electric network
01/20/1982EP0043958A2 Power sensing in a microwave oven
12/1981
12/10/1981WO1981003541A1 Microprocessor based energy consumption meter
12/10/1981EP0028625A4 Bidirectional integrator.
12/01/1981US4303881 Multi-function A.C. power meter
12/01/1981CA1113542A1 Load source simulator
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