Abstract: A nonconductive holster for use with an electrical meter is disclosed. The nonconductive holster comprises a protective guard for preventing a person who is using the electrical meter from coming into contact with any exposed power sources being measured with the electrical meter. The nonconductive holster is fabricated of a nonconductive resilient material which provides the electrical meter with a protective coating in the event that the electrical meter is accidentally dropped or inadvertently struck.

Abstract: A water meter has a glass window (30) having an aperture (32) through which extends one or more screw threaded terminals (20) enabling electrical connection to be made to an internal electronic encoder. A resilient grommet (34) is positioned in the aperture (32) and is held in compression between inner and outer sealing plates (36, 38). These are drawn together by the terminals which carry nuts.

Abstract: An apparatus for detecting and measuring disturbances in an electromagnetic field caused by the electrostatic potential of a charged object moving the field includes a DC source, a loop/solenoid coil, and a metering unit. The DC source charges the loop/solenoid coil, and thereby creates the electromagnetic field that emanates from the coil. The metering unit is provided to (indirectly) sense and quantify the disturbances in the electromagnetic field of the loop/solenoid coil by indicating a change in a current flow through the coil. The apparatus may be configured with a housing to enclose a plurality of components of the apparatus including the DC source, the loop/solenoid coil, and the metering unit.

Abstract: An electronic energy meter register enclosure which, in one embodiment, includes ribs and snaps configured to engage and snugly hold a printed circuit board in place is described. Openings in a meter frame align with openings in the enclosure, and threaded bolts securely engage the enclosure to the meter frame. The enclosure also includes, in the one embodiment, a snap which snaps on the rear bearing of the meter for facilitating holding the register enclosure in place. The enclosure further includes a shroud, and sidewalls of the shroud are configured to be closely positioned proximate the sides of the meter frame to reduce amount of ambient light allowed in the cavity of the shroud. The combination of the meter disc, the meter mechanical register, the meter frame and the shroud almost completely shields the electrical components of the register circuit board from harmful UV exposure that would create degradation and excessive heat build-up.

Abstract: An engine revolution counter comprising a mount 2 having first electric source terminals 20 for supply of electric power from outside and first measuring mode setting terminals 21 through 23, and a measuring part main body 1 provided on said mount in freely attachable and detachable way and having measuring mode setting switches and a display panel 11 on the front face thereof to display measured results and also having a measuring function of the number of revolution of the engine, wherein the first electric source terminals 20 and the first measuring mode setting terminals 21 through 23 are connected to each of second electric source terminals 16 and second measuring mode setting terminals 17 through 19 provided in said measuring part main body 1.

Abstract: An assembly for transferring data comprises a measurement data acquisition unit in the form of a portable measuring device, a measurement data processing unit, and an auxiliary unit for transferring data between the acquisition unit and the processing unit. Contact-less coupling elements are operatively associated with the acquisition and auxiliary units respectively for transferring measurement data between the acquisition unit and the auxiliary unit by contact-less coupling. Data are transferred between the auxiliary unit and the processing unit. The auxiliary unit includes a connecting member for mechanically detachably connecting the auxiliary unit with the acquisition unit such that the contact-less coupling elements face one another at a predetermined spacing and such that the connected acquisition and auxiliary units together form a portable measuring device.

Abstract: A front removable gauge assembly including a case gauge housing for locking the assembly to an instrument panel. A printed circuit board is mounted within the case gauge housing in electrical contact with conductors of a connector shell which extends from the case gauge housing for electrically connecting elements on the printed circuit board to an instrument signal source. A front removable gauge unit is removably mounted within the case gauge housing and contains an instrument assembly which can be mounted for 90-degree or 255-degree pointer sweep. From the bottom of the front removable gauge unit, a connector stud and wiper contacts extend. The connector stud has a protruding key which engages the bottom surface of the printed circuit board upon clockwise rotation of the front removable gauge unit to thereby removably lock it to the printed circuit boards.

Abstract: An instrument panel with meters/indicating lamps and their drive circuits implemented therein, a centralized control circuit board provided with control circuits for vehicle-mounted electric equipment including the meters/indicating lamps, and an electric junction box for distributing power sources and input/output signals for the vehicle-mounted electric equipment and for integrating ground wires, are gathered and integrally united. Electric wiring and installation of electric instruments such as an instrument panel in the dashboard portion of an automobile are facilitated.

Abstract: The present invention provides a meter socket arrangement wherein a tubular bus is coupled between each planar bus bar connected to the power source and meter input terminals for transporting electrical power from the planar bus bars to their respective meter input terminals. This invention also provides a novel boot for connection between the tubular bus and the planar bus bar to provide improved electrical connection between the bus bar and the tubular bus. The present invention may be utilized in any meter socket arrangement, including meter socket arrangements used in combination service entrance devices.

Abstract: A collective drive IC having a drive circuit for driving an electronic integrated distance indicator that indicates distance travelled by a vehicle is mounted on a wiring board together with the electronic integrated distance indicator. Drive circuits for driving a speedometer for indicating travel speed of the vehicle and a tachometer for indicating the number of revolutions of an engine are incorporated in the collective drive IC. The wiring board that has the collective drive IC and the electronic integrated distance indicator is accommodated in a single case to form an odometer unit. The odometer unit is releasably mounted on a meter case to which a main wiring board is fixed.

Abstract: An adaptable engine usage meter includes engine monitoring circuitry arranged within a front housing. Three different rear housings can be interchangeably attached to the front housing. A first rear housing includes a concave back portion, so that in conjunction with a complementary concave mounting bracket, it allows the meter to be attached to a round handlebar, such as that on a push mower. A second rear housing is slightly narrower than the front housing, so that a shoulder is formed when they are attached together. The second rear housing allows the meter to be mounted on an instrument panel by fitting it through a cutout until the shoulder engages the panel. When either the first or second rear housing is used, the circuitry in the front housing is connected to the ignition wire and the ground of an engine via a cable extended through the rear housing.

Abstract: A cradle apparatus (18 or 42) including a wireless interface for communicating via signal-transporting radiation (such as infrared radiation modulated so as to transmit data and control signals) with one or more meters (12) such as portable, hand-holdable, battery-powered multimeters, or other portable meters, mounted to the cradle apparatus, and a meter (12) which transmits signal-transporting radiation to the wireless interface when the meter is removably mounted to the cradle. Some embodiments, include a cradle having a wireless interface, a meter which transmits signal-transporting radiation to the wireless interface when the meter is removably mounted to the cradle, and a processor (48) for receiving from the cradle electrical signals indicative of data transmitted from the meter. Optionally, the wireless interface of the cradle also supplies visible radiation to a meter mounted to the cradle, for illuminating a display (14) of the meter.

Abstract: An oscilloscope of the following type is disclosed. Even though a main unit of the oscilloscope is horizontally placed, a display can be adjusted at an optimal angle. Also, while the main unit remains in such a position, press buttons can be depressed stably. An operating section is covered in the case of carrying the oscilloscope and knobs of the operating section, and the like, can be kept out of the way, thereby not hampering portability. An oscilloscope casing is divided into a display section and an operating section. A part of the top surface of the main unit is lowered and the operating section is placed on the lowered surface. The display section doubles as a cover for the operating section and is pivotally fixed to the top surface of the main unit via a hinge so as to freely open and close. The display section has a display screen inside and forms the top surface of the main unit and covers the operating section outside when the display section is closed.

Abstract: A digital multimeter having a structure built to withstand mechanical shock. The digital multimeter has an enclosure in which there is disposed a shielding or protecting plate provided with an elastic projection for pressing a liquid crystal panel toward a side of the enclosure and a battery holding projection for holding a battery mounted on a battery holder. The shielding or protecting plate is supported on the side of the enclosure. The shielding or protecting plate is also provided with a partition plate for fixing a crystal resonator element mounted on the circuit board. On the side of the enclosure, there is provided a pair of projections to prevent a fuse from moving. Thus, component elements disposed in the digital multimeter, which may leave their given location due to mechanical shock applied, for example, when the digital multimeter is dropped are "fixed" by, among other things, the shielding plate and the enclosure thereby improving the multimeter's resistance against mechanical shock.

Abstract: A digital multimeter is provided with a highly reliable seal at a connection interface between an upper and lower enclosure forming an enclosure. The multimeter also has a highly reliable seal at peripheral boundaries of operating elements disposed on a surface of the enclosure thereby providing a highly-reliable, water-proof and dust-proof mechanism at a low cost. A packing serves as an elastic sealing material and is disposed at the connection interface between the upper enclosure and the lower enclosure. The packing is pressed and crushed in a slant direction relative to the direction of the thickness of the enclosure thereby providing a sealing mechanism at the connection interface. The periphery of a rubber key serving as an operating element is sealed by a double sealing mechanism comprising an uneven face formed on a peripheral side and an even face formed on the upper enclosure.

Abstract: An electrical measuring device has measuring elements for fitting around an electrical conductor, so that a property associated with the conductor can be measured. The device has a display unit 13 which can be used to display information relating to the property being monitored. The measuring elements for fitting the device around the conductor include a pair of jaws 16, 17, each mounted on a body member 12 for movement with respect to the body member, so that the jaws can move towards and away from one another. A plurality of connection terminals 25, 26, 27 and 28 are provided, together with a selection mechanism arranged such that, when at least one terminal is accessible, at least one other terminal is inaccessible. The device has an output terminal 29, from which an output signal can be derived, with isolation elements 35, 36 to isolate the output terminal from other components of the device, to avoid or reduce the risk that high voltages will be transmitted to the output terminal.

Abstract: A digital tester includes structure for: automatically effecting AC/DC determination of an input signal and subsequent AC/DC switch-over of a measurement system, enabling high-response measurement; measuring a pulse width using a simple construction and having high reliability, by handling changes in an input potential as changes in potential zones; and storing the probes and test leads so that the digital tester is easier to handle for a higher degree of convenience in use. The storing of the probes enables each probe to be securely stored with the grooves; to enable the probes to be used in their stored positions; and to facilitate removal of the probes by a user.

Abstract: A housing includes a base with blade terminals insertable into jaw contacts in an electrical watthour meter socket. First and second watthour meter receiving shells are mounted on the housing, each having a pair of line jaw contacts connected in parallel to each other and to line blade terminals in the base. Electrical conductors extend from the load jaw contacts in one of the shells to a junction box mounted on the housing to provide a connection to an external electrical conductor. An electrical power disconnect device is mounted in one of the shells, and is connected in series by conductors between the line jaw contacts in both shells. The power disconnect device includes a movable external member having an end portion which slidably extends through the side wall of one of the shells. In one embodiment, the end portion is a separate rod which is biased into contact with the movable member.

Abstract: An apparatus is provided for enclosing and protecting an electric meter for storage or transport purposes. The apparatus is comprised of a base unit and a cover unit of rigid plastic that provide both shock and thermal protection to the meter. An inwardly extending ring on both the base and cover encloses the meter's flange, thus centering and immobilizing the meter in the case. Both the cover and base unit also have protruding lips of slightly different sizes so that the cover lip accepts the base lip within it. In addition, each lip is threaded, so as to attachably engage with the other and, when rotated, lock the cover, the base and the meter together.

Abstract: An electric meter has reduced torque needed during relative rotation of a cover and base during a predetermined portion of rotation between initial and locked positions to thereby facilitate securing of the cover and base together at a predetermined seating torque. The torque reduction is preferably provided by a plurality of base ridges connected to the base mating surface adjacent respective clip receiving slots, and a plurality of cover projections connected to the cover mating surface. The cover projections slidably contact adjacent base ridges on the base mating surface to thereby reduce friction during the portion of rotation between the initial and locked positions. A gasket is preferably positioned between the base mating surface and the cover mating surface.

Abstract: The present invention provides a continuity tester suitable for testing different types of devices and circuits wherein first and second members are hingedly connected together, the first and second members each having an electrically conductive surface element associated therewith, the arrangement being such that the conductive surface element of the first member is connected to a negative side of a test circuit and the conductive surface element of the second member is connected to the positive of a test circuit and the first and second members then assume different angles with respect to each other to enable many different devices to be tested through manipulation of the first and second members.

Abstract: The invention relates to an instrument for testing and/or measuring electric magnitudes, in particular voltages and/or resistances. The instrument consists of two handle parts (10, 12), which are connected by a flexible cable (14), and which each have a contact point (16, 18). In addition to the contact point (16, 18), the handle parts (10, 12) each have a receptacle for the contact point (18, 16) of the other handle part (12, 10). The handle parts (10, 12) can be plugged together in such a way that their contact points (16, 18) each are pluggable into the receptacle of the other handle part (12, 10) nonparallel with the contact point (18, 16) of such other handle part. The contact point (16) and the receptacle of the one handle part (10) are arranged in a down-folding point part (22), so that the instrument, in the plugged-together condition, can be folded together for convenient, safe and space-saving storage.

Abstract: A trailer lamp testing and lamp storage apparatus is provided for connecting to an electrical connector of a trailer, wherein the electrical connector of the trailer has a predetermined number of contacts for a predetermined number of lamp circuits in the trailer. The lamp testing and storage apparatus includes a housing assembly which includes a bottom housing portion, a hinge assembly connected to the bottom housing portion, and a lid assembly connected to the hinge assembly. A storage assembly, supported by the housing assembly, is provided for storing a number of replacement lamps for replacing burned out lamps in the trailer. The lamp testing and storage apparatus also includes a predetermined number of battery-powered testing circuits and a connector assembly for receiving respective ends of the predetermined number of testing circuits.

Abstract: A remote meter reading receptacle for pit lid mounting includes an annular, cup-shaped housing containing a ferrite coil and electronic circuit board. This housing is mounted within an outer shroud which has an annual flange formed about its periphery. The shroud includes a pair of openings, the first for receiving a threaded fastener, such a bolt, and the other for receiving an electrical cable connected to the circuit board of the housing. The shroud is dimensioned to fit securely within an opening formed in the lid of a pit-type meter box, such as used for outdoor setting of water meters. A complementary cup-shaped washer includes a pair of openings for cooperating with the threaded fastener and for receiving the electrical cable. The washer is disposed on the underside of the pit lid and receives the threaded fastener to fasten the housing and shroud assembly securely to the upper surface of the pit lid. The washer is reversible to accommodate a wide range of pit-lid thicknesses.

Abstract: The present invention provides an electrical distribution board and meter socket assembly. The distribution board includes a framework for a meter compartment which is partially defined by a side panels, a bottom electrically insulating barrier and by a bus. The distribution board also includes an opening through each side panel and between each side face of the framework and the bottom barrier. The opening is of sufficient size to allow electrical connections therethrough. An L-shaped insulating barrier connects to the bottom barrier and is disposed in front of the bus. The meter socket assembly includes a socket pan, a socket molding assembly for an electrical meter, a test block assembly, and a plurality of load terminals adapted for electrically connecting to branch lines which overlap one another and extend from the load terminals in a direction generally parallel to the bottom edge. The meter socket assembly also includes a plurality of line terminals adapted for electrically connecting to line bars.

Abstract: A dual meter mounting plate member carrying an ammeter and a voltmeter, the plate member having therein recesses to receive the voltmeter and the ammeter, the plate member being removably attached to within a battery charging casing, the ammeter being connected to the charging circuit and the voltmeter having terminals across the battery to be charged to indicate the state of charge.

Abstract: A self-contained, clip-on engine operating time log comprises a case containing circuitry for monitoring the accumulated operating time of a spark ignition engine. A plastic sensor, rigidly extending from the case, has two semi-cylindrical channels for clipping the time log directly onto an ignition wire of the engine. The sensor and the circuitry detect spark impulses in the ignition wire for determining the operating time of the engine. A liquid crystal display, visible through a window of the case, digitally displays the accumulated operating time.

Abstract: A flat, modular measuring circuit having two connecting terminals for one phase of load current and a current sensor connected thereto. The two connecting terminals are arranged one above the other on one of the end faces of the module. This configuration leads to a significant reduction in the meter width and to a reduction in the production costs, since these modules can also be cost effectively produced in increased quantity and used for multi-phase meters.

Abstract: A watt-hour meter cover is provided which has an optical coupler including a conduit, lens, and means for engaging an external programmer/reader. The conduit is has improved signal transmission properties. The cover may be designed to disable test mode hardware when replaced after meter servicing. A battery access hatch and module with a reset and scroll actuator is installed through the cover.

Abstract: A tester applies a high-voltage test signal across the probes of a high-voltage measuring apparatus, wherein at least one of the probes is mounted at a probe end of an elongated insulated pole. The tester includes a battery-powered generator for generating the test signal which is applied across two contact terminals, respectively adapted for connection to the probes. One of the contact terminals is disposed at the bottom of an elongated tubular socket which receives the probe end of the pole, the contact terminal including two conductive members spring-biased apart until the pole is inserted in the socket. The generator is energized through a switch which may be mounted on the generator housing. In one embodiment the other contact terminal is an alligator clip and in a second embodiment the other contact terminal is disposed in a second socket.

Abstract: A moving magnet type indicating instrument comprising a moving magnet type instrument, a counter mechanism, a drive unit, and a frame body produced of a synthetic resin. The magnet type indicating instrument includes a magnet mounted in bobbins produced of the synthetic resin, a needle shaft fixed to the magnet, and a coil wound at an angle on the bobbins. The bobbins are housed in a magnetic shield case and the coil is electrically connected to terminals provided on the bobbins. The counter mechanism, including a total counter and reset counter having a zero-resetting device, is mounted on the frame body. The drive unit comprises a case including a step motor for driving the counter mechanism and a groove of gears, and is fixed to the frame body. Terminals for the moving magnet type indicating instrument and the drive unit are inserted and connected to the connectors provided on a printed-circuit board.

Abstract: A vent (180) for an electricity metering device (30) having a housing (34) having a generally planar surface thereon with a cavity (35), a plurality of vent openings (182) on the surface of the housing (34) which extend through the surface for allowing passage of air therethrough and a plurality of vent shields (184) positioned on one side of the surface adjacent each of the vent openings (182), preventing access through the vent openings (182) into the interior of the housing (34), the vent shields (184) including a first wall (190) extending generally perpendicular from the surface of the housing, and a second wall (192) attached to the first wall (190) extending generally parallel to the surface.

Abstract: A totalizer and rate meter is totally enclosed within a permanently sealed, fluid tight body formed of a low cost, transparent epoxy material. The meter can be programmed in the field by means of an optical transmitter communicating with an optical receiver enclosed within the transparent body of the meter.

Abstract: A solid state speed indicator for railroad locomotives is provided with a plurality of indications in addition to speed. These include an acceleration indicator and an overspeed indicator. In addition, the speed indicator is provided with a dual range speed function having at least one particular use in drag operations. A variation of the solid state speed indicator is a retrofit design that replaces the meter movement in existing speed indicator equipment with a solid state display.

Abstract: A meter device in which a casing having a front opening portion and a back opening portion is provided therein with a partition wall to form a front-side containing space and a back-side containing space, an electric meter main body is contained fixedly in the front-side containing space, and a circuit board is attached to the back opening portion side of the casing, with the electronic part mounting side directed toward the partition wall, whereby an electronic part mounted on the circuit board is contained in the back-side containing space. The meter device facilitates assembling operations and electrically connecting operations. With the electronic part containing space partitioned into a plurality of containing spaces, the electronic part which generates heat can be isolated from the other electronic parts, whereby thermal interference is reduced.

Abstract: A cross coil-shaped indicating instrument includes a cross coil structure in which two coils are wound around a coil bobbin at right angles to each other. The coil structure is electrically charged in correspondence to the amount measured so as to form a composite magnet. A magnet rotor is disposed inside the cross coil structure. The magnet rotor has a center rotary shaft rotatable at a predetermined angle in correspondence to the composite magnetic field. A pointer is fixed to the end of the rotary shaft. In order to press the pointer into an appropriate position with respect to the rotary shaft, a pressure recess is formed in the coil bobbin so that a rod-like fixture can be inserted into the recess, and a stopper projects inside the pressure recess to press against the magnet rotor when the fixture is inserted. The stopper makes the magnet rotor stationary. While the rotary shaft remains stationary, the pointer can be fixed to an predetermined indicating position.

Abstract: A magnetic detection apparatus (magnetic locator) comprises a housing constituted by a first integral molded plastic unit and a second integral molded plastic unit that are joined. The first unit has a tube with a plate at one end thereof transverse to the length of the tube, the plate having an opening through which a magnetic sensor assembly is inserted into the tube. The second unit has a cover open at one end and having a tubular handle at the opposite end, by which the user may grasp the apparatus. Attachment of the cover to the plate closes the open end of the cover to provide a casing. Magnetic sensors are mounted on a channel or angle structural member that is rigidly attached to the chassis of an electrical unit mounted in the casing. Sound from a loudspeaker mounted on the chassis is transmitted through the handle to the exterior of the apparatus. The chassis also supports a meter that is visible through an opening in an end wall of the cover adjacent to the handle.

Abstract: The ammeter includes a tubular housing with a hook-shaped sensor secured thereto at one end thereof and coupled to battery-powered digital ammeter circuitry disposed within the housing. The other end of the housing is open and receives telescopically therein a cylindrical cartridge which includes either a cradle or a recess supporting a replaceable battery and carrying connectors for connecting the battery to the ammeter circuitry. A universal spline coupler is telescopically received in a bore in the cartridge and projects from the tubular housing when the cartridge is disposed therein for coupling to associated equipment, such as a hot stick.

Abstract: The invention relates to battery-operated appliances, and to an improved battery storage compartment. The battery (47, FIG. 7) lies in a compartment in a housing (20), the housing having a front face containing controls (28, 30) and a display (26). An aperture (44) lies in the housing front face to enable battery replacement from the front, and a cover (110) covers the aperture. The cover has ports (124) through which plugs (122) pass to reach sockets (32). A circuit board (36, FIGS. 3 and 4) lies behind the rear wall (134) of the battery compartment, the circuit board having about as great a width and length as the housing.

Abstract: A time of use register for use in an electronic watthour meter is formed of a three piece interlocking construction without the use of separate fasteners or the use of tools for assembly. The TOU register includes a front cover, a rear cover and a resilient clip, each of these components having various features to provide firm containment of a PC board and an LCD within the register. The front cover includes a window within which the LCD is positioned and a connector slot within which a resilient electrical conductor strip is situated. The electrical conductor strip provides communication between the PC board, which has a contact array at one edge of the board, and the LCD array, which also has a complementary contact array at its upper edge. The rear cover encloses the rear and part of the sides of the TOU register and includes a number of stops for providing uniform pressure against the PC board to hold it in position.

Abstract: An optical communications shielded link assembly is provided from outside the cover of an electronic power meter to the register assembly without connecting cables and including an optical coupler on the exterior of the cover and an optical shroud assembly between the cover and a light emitter and detector positioned within the power meter around a light emitter and light detector. The optical shroud includes a spring loaded sleeve to fill the space between the cover and the register assembly and shield against ambient light. The sleeve includes projections moving within an annular slot with sufficient looseness to enable 3 axes positioning. Retaining and positioning means are provided for the components of the assembly. A detachable magnetic coupler can be connected to the cover mounted coupler or through a programming adapter detachably connected when the cover is removed.

Abstract: A watt-hour meter cover is provided which has an optical coupler including a conduit, lens, and means for engaging an external programmer/reader. The conduit has improved signal transmission properties. The cover may be designed to disable test mode hardware when replaced after meter servicing. A battery access hatch and module with a reset and scroll actuator is installed through the cover.

Abstract: A voltage rotation indicator for testing the phase sequence of live multi-phase electrical power is mounted within a housing. The housing is provided with structure for removably mounting the indicator on a meter box or can during voltage rotation testing. Contact plungers extend from the housing and contact meter jaw test points in the meter box during testing. Field personnel are thus not required to insert their hands into the meter box to attach test clips to the live circuit.

Abstract: A measuring instrument comprising an instrument body (1), a dial (2), an attachment plate (3) on the instrument body behind the dial, and a transparent front plate (4) covering the dial. The front plate is permanently and water-tightly attached to at least one of the attachment plate and dial and defines a sealed space between the front plate and the dial. A separate detachable decoration panel (11) covers part of the front plate and has a U-shaped cross section having legs that have profiled resilient parts. The front plate and attachment plate have corresponding profiled parts (14, 15) which coact with the profiled panel parts to enable the decoration panel to be snap-fitted onto the instrument with its legs gripping between them the front plate and the attachment plate.

Abstract: An electrical gauge structure capable of conveniently placing thereon one or two measuring bars is provided. The structure includes a housing, a fixing piece cooperating with the housing to define therebetween a clearance, and two retaining pieces provided on two sides of the fixing piece and limitedly slidably guided in the clearance so that when the retaining pieces are outwardly slid, they can position thereon the measuring bars.

Abstract: An electromagnetic and thermal shield for an electronic energy meter which includes a base, a register and intermediate electronics. The tapered form fitting shield extends from the register to the base and includes intermediate resilient fasteners formed from the shield to position, secure, and shield the components of the meter.

Abstract: An electronic time of use or demand register is provided for selective addition to a watthour meter in an energy meter. The electronic register is configured for parallel mounting beside the watthour meter to minimize space and includes an integral register enclosure for properly assembling and securing various components in positive operational relationships such as positioning the optical detection assembly relative to the rotating castellated shutter and in turn positioning the optical communications link relative to the optical detection assembly. The register enclosure additionally includes integral means for mounting the electronic register within the energy meter and for selectively adding and positioning a plurality of optional features.

Abstract: A modular versatile electronic energy meter is provided with current voltage and register modules which may be selected and readily interconnected along with a selected output circuit board and including a plurality of features which may be customized late in the manufacturing cycle or after manufacture, including jumpers adapted to be selectively cut and attachable switch restrictors. Reduction and standarization of components and uncomplex interconnections are provided, along with apparatus to assure proper assembly and testing of the modular meter.

Abstract: An output connection and signal conditioning circuit board is selected and detachably connected to an electronic energy meter to customize its functions. Connectors are provided at the ends of the circuit board to mate with an edge connector in the bezel of the register and spaced holes in the base. A separate flexible connection to the KYZ terminals is provided, along with an intermediate tab and slot to position the circuit board and strengthen the meter. A selected circuit board is added to the manufactured meter to meet customer requirements by inserting a pin connector at the bottom of the circuit board through the spaced holes, and rotating the circuit board to mate with the tab and the edge connector.

Abstract: A voltage rotation indicator for testing the phase sequence of live multi-phase electrical power is mounted within a housing. The housing is provided with structure for removably mounting the indicator on a meter box or can during voltage rotation testing. Contact plungers extend from the housing and contact meter jaw test points in the meter box during testing. Field personnel are thus not required to insert their hands into the meter box to attach test clips to the live circuit.