Abstract: A system for calibrating a power meter may include mechanically detachably electrically engaging a first power meter with a second power meter. The first power meter may receive a first current input signal representative of a current level in a first conductor to a load and receive a first voltage input signal representative of a voltage level in the first conductor, and determine a first power level based upon the first current input signal and the first voltage input signal. A second power meter may receive a second current input signal representative of the current level in the first conductor to the load from the first power meter, receive a second voltage input signal representative of the voltage level in the first conductor to the load from the first power meter, and determine a second power level based upon the second current input signal and the second voltage input signal.

Abstract: A coil that includes one or more sensors.

Abstract: A power monitoring system includes a plurality of current sensors suitable to sense respective changing electrical current within a respective conductor to a respective load and a conductor sensing a respective voltage potential provided to the respective load. A power monitors determines a type of circuit based upon a signal from at least one of the current sensors and a signal from the conductor, wherein the type of circuit includes at least one of a single phase circuit, a two phase circuit, and a three phase circuit. The power meter configures a set of registers corresponding to the determined type of circuit in a manner such that the configuring is different based upon each of the single phase circuit, two phase circuit, and three phase circuit suitable to provide data corresponding to the determined type of circuit.

Abstract: The flexibility of a branch circuit monitor is improved by a signal conditioning unit that outputs a voltage in response to an input voltage and which is configurable to output the same range of output voltages in response to input voltages varying over different ranges.

Abstract: An electrical monitoring system that includes non-binary indications.

Abstract: A system for indicators of power meters.

Abstract: A branch current monitor that includes reconfiguration.

Abstract: A gas sensing device that includes humidity compensation.

Abstract: A power monitoring system includes a plurality of current sensors suitable to sense respective changing electrical current within a respective conductor to a respective load and a conductor sensing a respective voltage potential provided to the respective load. A power monitors determines a type of circuit based upon a signal from at least one of the current sensors and a signal from the conductor, wherein the type of circuit includes at least one of a single phase circuit, a two phase circuit, and a three phase circuit. The power meter configures a set of registers corresponding to the determined type of circuit in a manner such that the configuring is different based upon each of the single phase circuit, two phase circuit, and three phase circuit suitable to provide data corresponding to the determined type of circuit.

Abstract: A sensing transformer includes a first transformer segment including a first magnetically permeable core having a sector having a planar cross-section bounded by a closed curve and having a first end and a second end. The first core includes a winding including at least one turn substantially encircling the cross-section of the core and a first segment housing enclosing the winding and a portion of the first core. A second transformer segment separable from the first transformer segment including a second magnetically permeable core having another sector having a third end and a fourth end.

Abstract: A transformer for monitoring current in a power cable is magnetically linked with the power cable connected to the electrical device, where the transformer produces a changing transformer signal in response to the presence of a changing current within the power cable. An input circuit located proximate to the transformer and having an output terminal and being electrically connected to the transformer so as to receive the changing transformer signal. The input circuit produces, in response to receiving the changing transformer signal, one of a first signal representative of the changing current, and a first circuit condition at the output terminal of the input circuit representative of the changing current in the power cable. The input circuit includes an impedance set having an effective impedance that comprises a plurality of elements, wherein at least one of the elements is not electrically connected to the remaining the plurality of elements.

Abstract: A power monitoring system includes a plurality of current sensors suitable to sense respective changing electrical current within a respective conductor to a respective load and a conductor sensing a respective voltage potential provided to the respective load. A power monitors determines a type of circuit based upon a signal from at least one of the current sensors and a signal from the conductor, wherein the type of circuit includes at least one of a single phase circuit, a two phase circuit, and a three phase circuit. The power meter configures a set of registers corresponding to the determined type of circuit in a manner such that the configuring is different based upon each of the single phase circuit, two phase circuit, and three phase circuit suitable to provide data corresponding to the determined type of circuit.

Abstract: A first housing portion of a split core sensing transformer includes a guide element arranged to engage a guide surface of a separable second housing portion and to control rotation and translation of the housing portions to align the housing portions during joining.

Abstract: A current switch that can be reset when it is not powered automatically calibrates itself when the circuit monitored by the current switch is energized.

Abstract: A gas sensing device that includes differential temperature compensation.

Abstract: A plurality of current sensors on a support is attached to bracket which is secured in an electric power distribution panel.

Abstract: In a digital branch circuit monitor, compensation for the phase error is accomplished by selecting a voltage sampled at a time temporally offset from the sampling time of the current by an interval quantifying the phase shift of the secondary current relative to the primary current that is characteristic of a current transformer.

Abstract: The quantity of data stored in a branch circuit monitor and accessible by a data processing network is increased by logically dividing the monitor's memory into a plurality of registers each comprising a plurality of pages and addressing a page containing the desired data with an address corresponding to the identity of a page number stored in a page register and the identity of the register.

Abstract: A power monitoring system includes a plurality of current sensors suitable to sense respective changing electrical current within a respective conductor to a respective load and a conductor sensing a respective voltage potential provided to the respective load.

Abstract: A gas sensing device that includes differential temperature compensation.