Abstract:
A modular electricity meter configuration and corresponding methodology permits use of certain common components in combination with either a variety of mechanical displays or electronic displays. In electricity meter arrangements making use of printed circuit board or solid state technology, at least two separate electronics boards may be provided. One may constitute a standard board for basic metrology functions while the other may comprise selected implementation of various higher level functions for creating a custom design electricity meter to meet customer requirements. Different customers may be provided with differently outfitted meters by corresponding customization of the higher level function board. A unitary power supply may be provided for both boards through a fixed connector. A common baseplate includes a circuitry link through a nonremovable plug or clip for alternatively providing a tamper proof embodiment or one with exposed terminals for permitting customer testing. Physical stability and strength is provided by using tapered mounting posts and integrated snap fit arrangements without requiring any screws for assembly. A light pipe provides external output through an innercover to indicate correct meter operation. Meter data and other metered information may be output through different configurations optionally involving hardwired output, RF links, pulse outputs, and telephone connections via modem or wireless.

Description:
PRIORITY CLAIM 
     Priority is hereby claimed to previous filed U.S. provisional application with the same title and inventors as present, assigned U.S. Ser. No. 60/110,457, filed Dec. 1, 1998. 
    
    
     BACKGROUND OF THE INVENTION 
     The present invention generally concerns improved configurations and corresponding methodologies for modular meters and related features, and more particularly concerns integrated production of electricity meters capable of assuming a wide variety of optional and alternative features in respective embodiments based on certain common, base features. The subject invention concerns both apparatuses and methodologies in such areas, including in some instances the use of practical computer software applications involving an algorithmic approach to producing a useful, concrete and tangible result, i.e., namely, specific basic and selected higher level metrology functions. 
     The general object of metrology (i.e., the science of measurement) is to monitor one or more selected physical phenomena to permit a record of the monitored event(s). Such basic purpose of metrology can be applied to a variety of metering devices used in a number of contexts. One broad area of measurement relates, for example, to utility meters. Such role may include the monitoring of the consumption of a variety of forms of energy or other commodities, for example, including electricity, water, gas, and oil. 
     More particularly concerning electricity meters, a mechanical form of register was historically used for outputting accumulated electricity consumption data. Such an approach provided a relatively dependable field device, especially for the basic or relatively lower level task of simply monitoring accumulated kilowatt hour consumption. 
     The foregoing basic mechanical form of register is typically limited in its mode of output, so that only a very basic or lower level metrology function is achieved. Subsequently, electronic forms of metrology devices began to be introduced, to permit relatively higher levels of monitoring, involving different forms and modes of data. 
     In the context of electricity meters specifically, for a variety of management and billing purposes, it became desirable to obtain usage data beyond the basic kilowatt hour consumption readings available with many electricity meters. For example, additional desired data may include rate of electricity consumption, or date and time of consumption. Solid state devices provided on printed circuit boards, for example, utilizing programmable integrated circuit components, have provided effective tools for implementing many of the higher level monitoring functions desired in the electricity meter context. 
     In addition to the beneficial introduction of electronic forms of metrology, a variety of electronic registers have been introduced with certain advantages. Still further, other forms of data output have been introduced and are beneficial for certain applications, including wired transmissions, data output via radio frequency transmission, pulse output of data, and telephone line connection via modems or cellular linkups. 
     The advent of such variety and alternatives has required utility companies (the customers of manufacturers) to make choices about which technologies to utilize. Such choices have been made based on both philosophical points (i.e., customer preferences) and based on practical points (such as, training and familiarity of field personnel with specific designs). 
     Another aspect of the progression of technology in this area of metrology is that various retrofit arrangements have been instituted. For example, some attempts have been made to provide basic metering devices with selected more advanced features without having to completely change or replace the basic meter in the field. For example, attempts have been made to outfit a basically mechanical metering device with electronic output of data, such as for facilitating radio telemetry linkages. 
     Another aspect of the electricity meter industry is that utility companies have large scale requirements, sometimes involving literally hundreds of thousands of individual meter installations. Implementing incremental changes in technology, such as retrofittable features, or changes to basic components making various components not interchangeable with other configurations already in the field, can generate considerable industry problems. As a result, some utilities have made individual decisions to forego various aspects of potentially improved technologies in order to avoid the above-referenced entanglements and potential negative consequences. In other words, implementing new devices compatible with those already in the field (and typically involving relatively older technologies) minimizes the training and performance requirements of perhaps hundreds of field personnel, and helps avoid field compatibility problems with technology. 
     From the perspectives of manufacturers in the industry, it can be difficult to implement relatively newer technologies, even after they have clearly been proven, simply due to the large scale inertia of the total system being potentially affected. 
     While various aspects and alternative features are known in the metering field, no one design has emerged generally integrating customer options based on modular meter configurations and corresponding methodologies. 
     U.S. Pat. No. 5,495,238 discloses a utility meter making use of a light pipe through the case so that a light source from outside of the meter case may be piped into the meter for interaction with a rotating disc, so that information may be derived from returning light picked up by a pair of light detectors also outside the case. Such &#39;238 patent also represents an example of rotating disc technology as part of the mechanism for monitoring kilowatt hour consumption. 
     Various examples of multi-function watt-hour meters are provided by U.S. Pat. Nos. 4,881,070; 4,465,970 and 5,014,213. U.S. Pat. No. 4,881,070 discloses a device included within the meter for reading dials and for producing output signals for transmitting such readings and others to a remote location. The disclosure of U.S. Pat. No. 4,803,484 is also related to such subject matter. 
     Remote meter reading and transmission of other information from electric meters such as over an electric power distribution grid or network to a main location is discussed in U.S. Pat. No. 4,904,995. Components disclosed in U.S. Pat. No. 4,491,789 connect a pulse initiator within an energy meter enclosure for responding to rotation of a meter disc. An apparatus for transmitting data from a meter to a remote location across telephone lines and utilizing a shaft angle encoder arrangement is disclosed by U.S. Pat. No. 3,268,884. 
     Examples of enhancing the functions of an electro-mechanical watt-hour meter without incorporating additional apparatus within the meter are shown by U.S. Pat. Nos. 4,415,853; 4,922,187 and 4,646,003. An arrangement is disclosed in U.S. Pat. No. 4,922,187 for providing a pulse initiator circuit attachable to a utility meter without breaking the meter seal. Another pulse initiator form is included in U.S. Pat. No. 3,943,498. U.S. Pat. No. 4,121,147 discloses a form of an adaptor which may be used as a housing for the pulse-pickup electronics along with whatever other additional circuits may be needed for manipulating resulting pulse data for performance of functions to obtain desired features. 
     U.S. Pat. No. 5,364,290 shows various electricity meter features, including use of particular molded base features with pairs of current spades projecting through and anchored to such base. 
     U.S. Pat. No. 4,783,623 is a further example of meter technology. U.S. Pat. No. 5,089,771 is an example of a watt-hour meter reading device with a rotating disc and multiple dial register mechanism. 
     A laminated “figure 8” power meter core example is disclosed in U.S. Pat. No. 5,694,103. U.S. Pat. No. 4,742,296 shows a further example of three legged or “figure 8” ferromagnetic meter cores. Additional background references on such area include U.S. Pat. Nos. 4,491,790; 5,027,059; 5,338,996 and 5,523,677. 
     U.S. Pat. No. 4,509,128 sets forth an example of solid state electrical power demand register apparatus and methodology. U.S. Pat. No. 5,469,049 also discloses an example of solid state technology, including a self-diagnostic electronic metering device. Background references related to such subject matter include, for example, U.S. Pat. Nos. 3,964,020; 4,056,775; 4,697,182; 4,734,639; 4,771,185; 4,884,021; 4,977,515; 4,979,122 and 5,059,896. 
     U.S. Pat. No. 4,783,623 discloses an example of a rotating disc type meter and a corresponding device for use therewith for recording energy use. 
     Additional exemplary background references in the area of electric meters generally include U.S. Pat. Nos. 5,170,051; 5,214,587; 5,442,281; 5,519,387; 5,590,179 and 5,789,672. 
     The disclosures of all of the foregoing United States patents are hereby fully incorporated into this application by reference thereto. 
     SUMMARY OF THE INVENTION 
     The present invention recognizes and addresses various of the foregoing shortcomings, and others concerning metrology devices and methodologies. Thus, broadly speaking, a principal object of this invention is improved meter configurations and corresponding methodologies. More particularly, a main concern is improved electricity meter configurations and corresponding methodologies. 
     Another general object of the present invention is to provide a meter configuration which is at least partially modular. In such context, it is a more particular object to provide such an improved configuration and corresponding methodology which permits use of a basic configuration with alternatively either a form of mechanical display arrangement or an electronic display, pursuant to customer preferences and/or requirements. Further in such context, it is an object to permit use of various constructions of such mechanical displays and electronic displays with modular meter configurations in accordance with the subject invention. 
     Yet another general object of the present invention is to provide improved meter configurations and corresponding methodologies which advantageously permit use of separate printed circuit boards, one for standard or basic features and another for customized, more advanced functions. In accordance with such aspect of the present invention, it is a more particular object to permit customization of the higher level of functionality (or “personality”) of meter configurations in accordance with the invention. Such advantages further result in improved delivery of manufactured devices to utility company customers, both with respect to cost efficiency and timeliness. 
     In such context of providing separate printed circuit boards (two or more of such boards in a given embodiment), it is a general object to achieve a unitary power supply for all such boards. In such context, it is a more particular object to permit interconnections between such boards through use of a fixed connector, for improved physical stability and electric connectivity. 
     It is another more particular object to provide a meter configuration for various embodiments, using a common baseplate having an initial main circuit opening to permit access for calibration, and which may be completed with a nonremovable plug or clip. In such context, it is a further particular object to provide alternative such clips, to permit the given meter embodiment to be rendered tamper proof or alternatively to be provided with exposed terminals to further permit customer accuracy testing and/or “internal” sensing after manufacture. 
     It is another present object to provide improved metering devices making use of printed circuit board technology having 100 percent surface mounted features on a single side of such boards, so that no components with wires must be passed through holes formed in the circuit board. With such arrangements, improved simplicity and cost efficiency are achieved. 
     In the context of improved modular meter configurations and corresponding methodologies, another present objective is to provide improved stability of design, including both the mechanical strength of various components and the quality of electrical connections between electrically conductive components. It is a more particular object to provide such improved modular designs which simultaneously contribute to the proper alignment of internal components for quality metering operations, without requiring older technologies such as wedging or potting. 
     It is another present object to provide improved communications through meter casings, such as by providing a light pipe operative with an internal source, such as for verifying calibration and correct operation. 
     Another present object is improved data transmission features, for example, by avoiding the use of any metal in faceplates or cover elements, to permit meter data to be radiated directly from a printed circuit board without requiring a separate antenna. 
     The use of improved display control buttons and corresponding actuators, integrally connected or operatively associated with a faceplate, are additional present objectives. 
     Still a further general object is to provide a modular meter configuration which makes use of mounting posts and snap fit technology for arranging and securing the components thereof, without requiring any screws or equivalent individual fasteners or securing elements. 
     Another general objective is to provide improved modular meter configurations and corresponding methodologies which permit the selective use of different forms of data outputs, including wired transmissions, radio frequency transmissions, pulse outputs (such as optically implemented and others), and telephone line transmissions via modem or wireless. 
     In the context of all of the foregoing alternative features, it is a present general object to provide an improved modular meter configuration and methodology which better facilitates efficient production of custom design utility meters, especially electricity meters, having the inherent advantages of an integrated system without disadvantages of retrofit techniques. 
     Additional objects and advantages of the invention are set forth in, or will be apparent to those of ordinary skill in the art from, the detailed description herein. Also, it should be further appreciated by those of ordinary skill in the art that modifications and variations to the specifically illustrated, referred and discussed features and steps hereof may be practiced in various embodiments and uses of this invention without departing from the spirit and scope thereof, by virtue of present reference thereto. Such variations may include, but are not limited to, substitution of equivalent means and features, materials, or steps for those shown, referenced, or discussed, and the functional, operational, or positional reversal of various parts, features, steps, or the like. 
     Still further, it is to be understood that different embodiments, as well as different presently preferred embodiments, of this invention may include various combinations or configurations of presently disclosed features, steps, or elements, or their equivalents (including combinations of features or steps or configurations thereof not expressly shown in the figures or stated in the detailed description). One exemplary embodiment of the present invention relates to an improved modular meter configuration for connecting to either a form of mechanical display or an electronic display. Such electronic display may be mounted with an internally secured display holder. Such embodiment may further include a separate metrology board and a higher level function board. Such metrology board may be a standard or basic device for kilowatt hour data while the higher level function board may permit custom design or “personality” inclusion of features for an electricity meter per a given customer&#39;s design criteria. For example, a standard device for kilowatt hour sensing may include a transducer with three inputs (current, voltage, and phase) and a simple pulse train output. 
     Yet another exemplary embodiment of the present invention involves a modular meter configuration having separate function boards, wherein the respective boards are driven by a unitary or singular, common power supply. 
     Yet another construction comprising an improved meter configuration and corresponding methodology in accordance with the subject invention makes use of tapered mounting posts and various snap fit features for providing a stable meter construction without requiring screws or other individual fastener elements. 
     Still further exemplary embodiments involve various combinations of the foregoing features, further including light pipe features for transmission of an optical source from inside a meter case to the outside thereof, such as for verifying calibration and/or proper operation. In such embodiments and others, further features may be provided in different combinations concerning various alternative display control buttons and/or optical communication ports, for example, for control of internally housed functional features. 
     Still further embodiments of the present invention involve various of the foregoing configurations, further outfitted, in the alternative, for different forms of outputting the basic and/or higher level data obtained with the metering device. Such embodiments may include various configurations of hardwired output, radio frequency transmitted output, pulse outputs (such as optically linked or others), and telephone line outputs via modem or wireless. 
     Additional embodiments of the subject invention, not necessarily expressed in this summarized section, may include and incorporate various mixtures and combinations of aspects of features referenced in the summarized objectives above, and/or other features as otherwise discussed in this application. 
     The present invention equally concerns various exemplary corresponding methodologies for practice and manufacture of all of the herein referenced meter embodiments. 
     Those of ordinary skill in the art will better appreciate the features and aspects of such embodiments, including methodologies, and others, upon review of the remainder of the specification. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       A full and enabling disclosure of the present invention, including the best mode thereof, directed to one of ordinary skill in the art, is set forth in the specification, which makes reference to the appended figures, in which: 
         FIG. 1  is a generally front and partially side perspective view of an exemplary embodiment of the subject invention as configured during use thereof, including enclosure within an external or outer cover; 
         FIG. 2  is a generally front and partially side perspective view, similar to that of  FIG. 1 , of an exemplary embodiment in accordance with the subject invention in isolation from the outer cover thereof, and in isolation from a use configuration thereof; 
         FIG. 3  is a generally rear and partially side perspective view of the illustration of an exemplary a embodiment as in  FIG. 2 , and showing in exploded view alternative modular plug features thereof; 
         FIG. 4  is a fully exploded view of the exemplary embodiment as represented in present  FIG. 3 , with certain features shown in partial cutaway and in phantom lines for better illustrating the features thereof; 
         FIG. 5  is a generally front view, with slight top perspective, with a number of modular aspects of subject embodiments of the subject invention removed, for showing only a baseplate and certain circuitry and support features directly associated therewith; 
         FIG. 6  is a generally side cross sectional view of the embodiment of present  FIG. 5 , taken along the section line  6 — 6  as illustrated in such  FIG. 5 , and showing in dotted line the relative position of additional features, including an inner assembly chassis and an inner cover; 
         FIG. 7  is a side cross sectional view of the subject matter as in  FIG. 6 , with certain additional elements illustrated for forming a first exemplary embodiment in accordance with the subject invention, having relatively lower and upper circuit boards and an electronic display, and with certain metering coil assembly features shown in full for greater detail thereof; 
         FIG. 8  is a side cross sectional view as in  FIG. 7 , and showing features in common with such FIG.  7  and with certain additional features of  FIG. 7  removed in favor of a second exemplary embodiment of the subject invention making use of a particular form of mechanical register device involving a cyclometer mechanism; 
         FIG. 9  is a side cross sectional view as in  FIGS. 7 and 8 , and showing a third embodiment of the subject invention making use of an alternative form of mechanical register, involving mechanized gears and dials for a clock-type mechanism; 
         FIG. 10  is a diagrammatical schematic view of certain baseplate features and corresponding simplified wiring features in accordance with the present invention, including labeling for various of certain diagrammatical representations; and 
         FIG. 11  is a functional schematic of various exemplary power supply features in accordance with the subject invention, and their relation to an exemplary fixed connector in accordance with the subject invention, including labeled diagrammatical representations. 
     
    
    
     Repeat use of reference characters throughout the present specification and appended drawings is intended to represent same or analogous features, elements, or steps of the subject invention. 
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Those of ordinary skill in the art will appreciate the various modifications and variations which may be made to the specific examples and embodiments discussed herein, and corresponding methodologies. Therefore, the description of such specific examples is intended by way of example only, rather than limitation such that the above-referenced variations come within the spirit and scope of various uses of the invention. 
     Further referencing present exemplary embodiments, it is to be understood that certain figures may illustrate various aspects and features of one embodiment such as may be included in another embodiment. Therefore, one or more figures may be required for illustration of all features included within a given embodiment of the subject invention. 
       FIGS. 1 through 3  collectively represent generally external features of an exemplary embodiment in accordance with the subject invention. In such regard,  FIG. 1  provides a generally front perspective and partially side view of a complete device in accordance with the subject invention, provided with an external cover generally  10  and situated for use thereof in a typical arrangement, such as in a residential electric meter setting.  FIGS. 2 and 3  provide generally front and rear perspective views, respectively, and with partial side views, of the subject exemplary embodiment in accordance with the subject invention, but with outer or external cover  10  thereof removed, and isolated from any use environment. 
     Referring more particularly (and collectively) to present  FIGS. 1 through 3 , inclusive, an exemplary meter configuration generally  12  is provided in accordance with the subject invention. Apparatus  12  may preferably include a baseplate or molded base generally  14  which receives what may be regarded as an inner cover generally  16 . Such inner cover  16  features are generally shown in dotted line in present  FIG. 1 , representing the fact that they are received within the outer or exterior cover  10 . 
       FIG. 1  illustrates an exemplary typical installation, with an embodiment of the subject invention received within outer cover  10  and mounted to a meter receiving junction box generally  18 . As well known to those of ordinary skill in the art, such box  16  is typically mounted on a wall  20  or similar flat surface. Electric wires are provided in and out of box  18 , typically covered with protective pipes or enclosures generally  22  and  24 . 
     More specifically, outer cover  10  may be provided with a truncated, generally frusto-conical section generally  26  and integrally included therewith or associated therewith a relatively larger base section  28  for being received about the peripheral protrusions of baseplate  14 . Outer cover  10  may be secured to meter device  12  with both cover  10  and device  12  captured by box  18 , all in various ways, as well known to those of ordinary skill in the art, and not forming any particular aspects of the present invention. 
     As further known and understood by those of ordinary skill in the art, outer cover  10  is typically transparent. Outer cover  10  may be comprised of glass or various generally transparent plastic materials. Such an external cover  10  provides adequate safety for the ultimate consumers (i.e., the customers of a utility company) as well as the field personnel of the utility company. At the same time, the transparent aspect of such outer cover  10  and several other particular features discussed hereinafter permit continued functional interaction with the device  12  covered thereby. 
     With outer cover  10  removed, additional features of device  12  and inner cover  16  are better visualized. Specifically, cover  16  defines a variety of openings, with various uses, functions, and relationships with outer cover  10 . 
     Inner cover  16  defines a primary opening generally  30  directed towards the front of the cover, primarily for visualizing a register output generally  32  through such opening  30 . As represented in  FIG. 1 , because of such opening  30 , the register output generally  32  may be observed through transparent outer cover  10 . 
     In accordance with additional aspects of the subject invention, such opening  30  may be preferably defined generally by a semi-circle. Such arrangement accommodates not only the represented exemplary electronic register output generally  32 , but other forms of mechanical register devices, as discussed in greater detail below. 
     Two openings generally  34  and  36  on the upper side of inner cover  16  accommodate additional functions. 
     Opening  34  (with outer cover  10  removed) permits insertion by a field operator of a so-called “reset to zero” probe device. As known to those of ordinary skill in the art, such a device resets the entire meter to zero, and is intentionally actuated by field personnel only whenever the entire meter is to be reset to its initial condition, “absolute zero”. Additional details about such devices and their functions are well known to those of ordinary skill in the art without requiring additional discussion, and form no particular aspect of the subject invention. 
     Opening  36  defined in accordance with the subject invention through cover  16  permits the output of a light pipe, as discussed in greater detail below. For example, such light pipe output may involve an infrared output normally generated all the time, in order to show a customer (i.e., the utility company personnel) that the meter is operating correctly. It also permits an output by which such customer may verify calibration of the meter, discussed in greater detail below. 
     Cover  16  may optionally define several additional openings on the front portion thereof. Specifically, an opening generally  38  may be provided for a pair of optical communication ports  40  and  42 . As well known to those of ordinary skill in the art, without requiring additional discussion, such optical ports permit specific devices to be used for communicating with electronic circuitry included within inner case  16 . An enlarged protrusion generally  44  may be formed in transparent outer cover  10 , to permit such optical communications ports to fully operate and function even while configured in the use environment thereof as represented by present FIG.  1 . By having a pair of ports  40  and  42 , simultaneous input and output functions may be conducted. Such functions may include the output of various forms of data detected by meter device  12 , as well as control inputs into electronic circuitry thereof. 
     A further opening generally  46  may be provided in the front face of inner cover  16  for receipt of an actuating element or switch  48 . Such actuator  48  may combine with internal circuit board functions for constituting what is referred to in the industry as a “demand reset”. Such optional function may also be thought of as a “monthly reset”, by which a field technician may reset a particular measurement feature, such as might be associated with certain higher level functions on an optional circuit board. For example, a peak usage reading (based on rate of usage rather than cumulative usage) may be presented in a data register, and then cleared or “reset” to begin a subsequent measuring time period.  FIG. 1  represents a pivoting actuation element generally  50 , to which controlled access may be provided, and which may operate through outer cover  10  for actuation of switch  48 , as well known to those of ordinary skill in the art without additional discussion. 
     Lastly illustrated, a further optional switch or actuator generally  52  may be provided through larger opening  30 , such as for initiating a test sequence conducted in conjunction with operation of a higher level function board included within an exemplary device  12 . As represented collectively by  FIGS. 1 and 2 , such “test” button  52  is only accessible to field personnel, while outer cover  10  is removed. 
     Considering the various above-referenced functions, it is an aspect of the subject invention that devices in accordance therewith may generally be field tested (to varying degrees, depending on specific embodiments) though not necessarily field serviced. Such a configuration permits maximum field interpretation of operation and activity, while inherently protecting field personnel from potential dangers arising from exposure to strong currents and/or high voltages as could occur if device  12  were more disassembled while mounted on or associated with box  18  for receipt of power distribution therefrom. 
     Another aspect of the exemplary embodiment device  12  of present  FIGS. 1 ,  2  and  3  is how far the front portion generally  53  of outer case  10  projects outwardly from baseplate generally  14 . The result is a relatively enlarged area generally  56  constituting an underside portion of case  10 . As referenced in present  FIG. 1 , a field technician may advantageously use the size of case  10  as mechanical leverage by pressing upwardly in the direction of arrow  58  for dislodging device  12  from the receptacles (not shown) situated in box  18 . As understood by those of ordinary skill in the art, respective spades or plug-in elements  60 ,  62 ,  64 , and  66  on the back side of baseplate  14  are received in corresponding receptacles in box  18 . Such spades  60 ,  62 ,  64 , and  66  provide both mechanical support of device  12  relative to box  18  and provide electrical connections for power flowing through (i.e., both in and out of) device  12 . 
     Typically, a field technician may initially insert spades  60  and  62  into their corresponding receiver elements within box  18 , at an angle, and thereafter pivot device  12  downwardly into a flat position relative box  18  so that spades  64  and  66  become seated in their corresponding openings. Pressure on area  56  by the technician in the direction of arrow  58  reverses such typical insertion technique, for removal of device  12 . Any significantly smaller depth of case  10  relative to baseplate  14  would correspondingly reduce the mechanical leverage achieved by such pivoting action, and make removal of device  12  relatively difficult in view of the intended relatively tight fit of spades  60 ,  62 ,  64  and  66 . 
     Inner cover  16  and baseplate  14  are preferably comprised of any of various non-conductive high impact plastic materials. Generally, baseplate  14  is of a heavier gauge than that of case  16 , for added strength and stability of device  12 . 
     As represented in present  FIGS. 2 and 3 , baseplate  14  may include various orientation notches or slots  68 ,  70 , and  72  (element  72  not seen in  FIG. 2 ) for desired alignment of device  12  relative to outer case  10 . Baseplate  14  may also be provided with feet or projections  74 ,  76 ,  78 , and  80 , simply serving to rest device  12  on the bottom of its base without requiring contact with or mechanical support on spades  60 ,  62 ,  64  and  66 . 
     Another feature of baseplate  14  which may be practiced involves a pivoting hanger member generally  82 . Such pivoting element may be pivoted about a pivot axis generally  84  so that an opening generally  86  may be selectively extended beyond the edge of notch  68 . In such fashion, a field technician may temporarily support baseplate  14  and any component secured thereto, for freedom of working with two hands. Likewise, such temporary hanging may be practiced at various points during manufacture or assembly of a particular embodiment of the subject invention. 
     As will be discussed in greater detail below, the upper side generally  88  of baseplate  14  may support various wiring features in accordance with the subject invention, for conducting electricity to and from spades  60 ,  62 ,  64  and  66  relative to the remainder of the electrical components of device  12 . Additional illustrations of such specific features appear in further figures below (for example, see  FIG. 5 ) and are described in their related discussion. 
     For present purposes,  FIG. 3  illustrates an opening generally  90  which may be formed through the bottom  92  of baseplate  14  into the interior of device  12 . During original manufacture and/or assembly of a given embodiment of the subject invention, opening  90  remains unblocked, so as to permit electrical interconnections to be achieved with components otherwise seated inside of a given device  12 . Through such electrical connections, the metrology features of device  12  may be calibrated (i.e., initialized for proper accuracy during use in a given environment), the details of which form no particular aspect of the subject invention. 
     Once calibration is completed via access through opening  90 , the opening is sealed by insertion of a plug intended as being non-removable. Specifically, either a plug  94  or of a form as plug  96  is alternatively inserted into opening  90 . Both plugs  94  and  96  create a link through the otherwise open circuitry supported on the upper side  88  of baseplate  14 . Therefore, use of either plug  94  or  96  enables use of device  12 . Without insertion of one of such plugs, no power via spades  60 ,  62 ,  64  and  66  would be properly routed to the interior components of device  12 . 
     Plugs  94  and  96  provide respectively different functions. While neither are intended as being readily removable, plug  94  provides an upper cover generally  98  which is completely insulated from the circuitry otherwise linked by conductive (and interconnected) tongs  100  and  102  of plug  94 . Therefore, insertion of plug  94  creates a tamper evident arrangement. In other words, in order to gain access to the electrical components or functioning of device  12  via baseplate  14 , it is necessary to remove plug  94 . Evidence of such removal will be readily apparent, due to the nature of its fit, wherefore a tamper-evident linkage is established. 
     On the other hand, alternative plug  96  has a pair of lateral side edge insulated elements  104  and  106 , which laterally surround conductive screw elements  108  and  110 . Through insertion of plug  96  into opening  90 , and function of the tongs  112  and  114  of plug  96 , a customer (i.e., utility company) can be provided internal access just as if opening  90  were still open, even though while plug  96  links the internal power circuitry and wiring for operation. 
     With use of such an arrangement and the modular, alternative plugs, a manufacturer may achieve desired access for manufacturing and initial calibration, and thereafter provide either a tamper-evident embodiment or interior sensing accessible embodiment, as desired by a customer, but with minimal variation to a given design. 
       FIGS. 4 through 9 , inclusive, show various additional details concerning interior components and others of exemplary devices  12  and others in accordance with the subject invention. 
     Generally speaking,  FIG. 4  shows an exploded view of the first exemplary embodiment of present  FIG. 3 , with partial cutaway of certain features in conjunction with inner case  16 , for greater clarity in such illustration.  FIG. 5  represents a generally front and slightly top perspective view of essentially baseplate  14  in accordance with the subject invention and various power wiring features associated therewith, as well as various support structure elements defined by such baseplate. 
       FIGS. 6 through 9 , inclusive, are various sectional views. 
       FIG. 6  illustrates a generally cross sectional view, taken along section line  6 — 6  in present FIG.  5 .  FIG. 6  illustrates in solid lines the elements of present  FIG. 5 , and illustrates in dotted lines the position of the inner cover  16  and an inner assembly chassis as it would be situated during use. 
       FIGS. 7 ,  8 , and  9  respectively show a first embodiment involving an electronic register assembly, a second embodiment involving a cyclometer register mechanical assembly, and a third embodiment having a clock register mechanical assembly. The illustrations of present  FIGS. 7 through 9  show a cross section similar to that as in FIG.  6 . Coil assembly features are shown in full in  FIGS. 7 through 9 , rather than in cross section, for additional detail thereof. While the features shown in phantom line in  FIG. 6  continue to be shown in phantom line in  FIGS. 7 through 9 , the additional solid line illustrations in  FIGS. 7 through 9  represent the alternative register assemblies as may be practiced in such exemplary embodiments in accordance with the subject invention. 
     For simplicity and clarity, repeat use of reference characters throughout such figures is intended to represent same or analogous features, elements, or steps of like numbered previously discussed reference characters, to eliminate redundancy of such description. Therefore, description of a reference character appearing elsewhere is applicable to the indicated figure, even if not expressly discussed in the context of such figure. 
     The exploded view of  FIG. 4  is largely self-explanatory to one of ordinary skill in the art, in that respective alignments of the various components for forming a modular meter configuration and corresponding methodology in accordance with the subject invention are fully illustrated. 
     Referring particularly to present  FIGS. 4 and 5 , respective openings  116 ,  118 ,  120 , and  122  are provided for respective spades  60 ,  62 ,  64  and  66 . Such spades are attached to respective ends of electricity meter coil elements generally  124  and  126 , so as to form a coil assembly. Interposed with such coil assembly is a laminated three legged or “figure 8” core generally  128  and its associated cover generally  130 . Details of such construction and its operation are set forth in various patent subject matter incorporated by reference in the subject application (see above references). See, for example, U.S. Pat. Nos. 5,694,103 and 4,742,296. It is also to be understood those of ordinary skill in the art from a review of such incorporated patents and from the matter disclosed herein (e.g., see FIG.  4  and its related discussion) that the outer periphery of laminated core  128  and the interior opening of core cover or support  130  may not be identical. Thus, a slight gap may exist between the two features  128  and  130 , which is not visible from the simplified illustrations of present  FIGS. 7 ,  8 , and  9 . 
     As further shown, core cover (or support)  130  includes flanges with openings  132  and  134 , which openings align and are fitted to upright posts generally  136  and  138  (see  FIG. 5 ) for proper receipt and positioning of such elements. By virtue of the predetermined location of openings  116 ,  118 ,  120  and  122 , and with the fixed position of the ends of coil elements  124  and  126  relative to contact spades  60 ,  62 ,  64  and  66 , the positioning of cover  130  with posts  136  and  138  ensures proper alignment of the core  128  and the coils  124  and  126  for electricity meter operations, as understood by those of ordinary skill in the art. 
     Such posts preferably amount to splined tapered mating or mounting posts, which are preferably ultrasonically welded to the components which they support, for keeping all elements stable relative to one another. Other forms of securement may be practiced, such as gluing or other non-detrimental forms of welding and/or attachment. 
     Another of the components of device  12  properly aligned with such technique in accordance with the subject invention is a first or basic integrated circuit board generally  140 . As referenced above, preferably all components are on one side of such circuit board  140 , and comprise the basic kilowatt hour metrology function, as well understood by those of ordinary skill in the art. See also various of the above-referenced U.S. patents for additional was background information. 
     In accordance with the subject invention, first or basic metrology circuit board  140  is provided with a pair of openings generally  142  and  144  for correspondence and receipt in stacked fashion on posts  136  and  138 . Such arrangement creates proper alignment of the gap within the center leg of core  128  relative to an appropriate electrical device supported on printed circuit board  140 . As illustrated, notches generally  146  and  148  may be provided to fit around lateral legs of core  128 , once the device  12  is assembled. Specifically in accordance with the subject invention, it should be understood that board  140  may carry electrical devices such as a Hall cell sensor  141  which, due to predetermined positioning per the subject invention, becomes properly located relative to the flux path associated with core  128 , for desired sensing purposes. 
     Circuit board generally  140  may include a further opening  150  defined therein for receipt of a further support post generally  152  (see FIG.  5 ). Such three hole arrangement for board  140  (holes  142 ,  144 , and  150 ) provides a highly stable three-point support reference for such standard or basic metrology circuit board. 
     As further shown in present  FIG. 5 , resilient connectors are placed on top side surface  88  of baseplate  14 . Specifically, three cantilevered spring connector elements  154 ,  156  and  158  are provided for operative interaction with select points on underside generally  160  of circuit board  140 , when properly positioned (after assembly) for making electrical connections with such board  140 . In such fashion, and per the wiring generally represented in present  FIG. 5 , connections are made from spades  60 ,  62 ,  64  and  66  with circuit board  140  via resilient connectors  154 ,  156  and  158 . Additional description of such connections appears below with reference to  FIGS. 10 and 11 . 
       FIG. 4  further represents use of a second or optional higher level function circuit board  162 . As referenced above, a variety of alternative functions may be included within such a board (generally well known to those of ordinary skill in the art) for providing “personality” or customization of the entire device  12  to meet the needs of a particular customer. In certain embodiments, all required power and signal transmissions needed for second or higher level function circuit board  162  may be provided via use of a fixed connector generally  164 . Such a fixed connector interconnects the boards edge to edge. In doing so, additional support is provided on one side generally  166  of second board  162 . 
       FIG. 4  illustrates fixed connector  164  in solid lines in a normally exploded view position thereof for receipt of an area generally  168  of first circuit board  140 .  FIG. 4  also shows a dotted line position generally  164 ′ of such fixed connector illustrating its relationship and support of edge  166  of second board  162 . 
     As represented in area  168  of first circuit board  140 , fixed connector  164  communicates a variety of channels of power and information up to a second circuit board generally  162  (with all channels adequately shielded relative to one another). In a presently preferred exemplary embodiment, seven channels are provided, as discussed in greater detail below with reference to present-FIG.  11 . 
     A further element which may be thought of as an inner assembly chassis  170  is provided in accordance with the subject invention. Basically, such chassis  170  and all other non-conductive elements (except circuit boards or other electrical components) within device  12  may be formulated from various plastic materials, in accordance with the gauge and durability desired for particular embodiments. 
     Chassis  170  includes a number of female receptacles defined on an underside generally  172  thereof for corresponding receipt of aligned support posts from the upper side  88  of baseplate  14 . As shown particularly in present  FIGS. 4 and 5 , relatively larger female receptacles  174  and  176  are provided for mating receipt of relatively larger support posts  136  and  138 , respectively. A plurality of generally smaller, paired female receptacles  178  are provided for corresponding interface with corresponding plurality of support posts generally  180 , again on the upper side  88  of baseplate  14 . Another relatively smaller post generally  182  is aligned for receipt of upright post  152  (discussed in greater detail above in conjunction with first circuit board  140 ). 
     As represented, an assembled configuration of chassis  170  “caps” the various support posts of baseplate  14 , whether otherwise used or not. Therefore, a tight, secure, and stable arrangement is provided, without the use of any screws or other individual fastening elements. 
     As additionally represented in present  FIGS. 4 and 5 , a number of “snap fit” technology features are integrated into various embodiments of modular meter configurations in accordance with the subject invention. For example, circuit board  162  may be provided with additional openings  184  and  186  (see FIG.  4 ), which correspondingly receive projecting fingers  188  and  190  of a display holding element generally  192 . Additional fingers  194  and  196  of such display holder  192  interact with a generally upper edge  198  of board  162 . With such arrangement of four fingers  188 ,  190 ,  194  and  196 , display holder  192  is secured to second circuit board  162  in the overall arrangement without requiring any respective individual attachment elements or fasteners. 
     Lateral edges generally  200  and  202  of board  162  may be held by respective fingers  204  and stop elements  206  of chassis  170 . It should be understood by those of ordinary skill in the art that such corresponding fingers  204  and stop elements  206  of chassis  170  as to lateral edge  202  of board  162  are generally not visible in the  FIG. 4  illustration. Therefore, the position of board  162  is secured with a “snap fit” arrangement while the electrical connections thereof are secured at least partly through fixed connector  164  (discussed in greater detail below with reference to present FIG.  11 ). 
     It is to be understood that additional fingers, stops, and other elements (such as fingers  208  and stops  210  of chassis  170  may be involved with securement of alternative registers or devices in place of second board  162  and/or display holder  192 . In fact, it is to be understood that virtually every opening and surface of chassis  170  contributes to its support and/or guide function in one or more alternative configurations of the subject invention. 
     Yet another support feature of chassis  170  is extension  212 , which functions to properly position an optical light pipe generally  214 , extending between a corresponding light emitting device  215  on first circuit board  140  and inner case opening generally  36  (see  FIGS. 1 ,  2 , and  4 ). Examples of the specific functions of such light pipe will be discussed in greater detail below. 
     Still additional fingers or projections  216  are provided on four relatively outer corners of chassis  170  for securing inner case  16  thereto through interaction with corresponding openings  218  of such case  16 . As understood by those of ordinary skill in the art, ultrasonic welding of female receptacles  174 ,  176 ,  178  and  182  of chassis  170  with corresponding upright mating/mounting posts  136 ,  138 ,  152  and  180  of baseplate  14 , results in complete securement of all internal features of device  12  once inner cover  16  is secured. 
       FIG. 5  additionally shows certain aspects of power supply features in accordance with the subject invention, as supported relative to baseplate  14 . Specifically, a varistor generally  220  may be received on upper side  88  of baseplate  14  and connected via respective leads  222  and  224  and other power supply network circuitry, as discussed in greater detail below with reference to present  FIGS. 10 and 11 . 
     Also, a capacitor  226  may be received on upper side  88  of baseplate  14  and connected by respective leads  228  and  230  to remaining power supply circuitry, again as discussed in greater detail with reference to present  FIGS. 10 and 11 . 
     As generally shown in present  FIG. 5 , the upper side  88  of baseplate  14  may be provided with various projections (no reference characters indicated) for securing the position of such elements, varistor  220  and capacitor  226 . 
       FIGS. 6 through 9 , inclusive, show various cross sectional illustrations, primarily referencing previously discussed subject matter while illustrating variations involved among different embodiments of the subject invention. Accordingly, it is to be understood that repeat use of reference characters is intended to encompass the prior discussion of such features, as applicable to such corresponding features. 
     More specifically,  FIG. 6  illustrates in solid line a side cross sectional view of the features illustrated in present  FIG. 5 , taken along section line  6 — 6  shown therein. Additional features represented in dotted line or phantom primarily relate to various aspects of inner cover  16  and inner assembly chassis  170 . One aspect of present  FIG. 6  is that it illustrates the availability of additional space, such as in general area  232  thereof, within which additional optional features may be received, such as a modem (not shown) for transmission of data via telephone lines. 
       FIG. 7  provides an identical illustration to  FIG. 6 , with the addition of various coil assembly features and features specifically for the above-referenced first embodiment of the subject invention, involving two integrated circuit boards and corresponding solid state circuitry and an electronic register for data output. 
     More particularly, inclusion of full view illustrations in  FIGS. 7 through 9  (rather than cross sections) of core elements  124  and  126 , laminated core  128  and core cover (or support)  130  results in blocked viewing of cantilevered connectors  154  and  156 . 
     The additional elements illustrated in present  FIG. 7  relative to  FIG. 6  so as to illustrate a more complete first embodiment of device  12  in accordance with the subject invention generally include the following. First, the basic function or first circuit board  140  is shown, as used in combination with the customized feature or second circuit board generally  162 . 
     As shown in  FIG. 7 , circuit board  162  is held by various fingers  204  of chassis  170  cooperating with stop elements generally  206  thereof. A display holder  192  is secured to such second circuit board  162  by respective projections or fingers  190  and  196 . Register output  32  is held by display holder  192 . Lastly, such first embodiment includes a representation of fixed connector  164 , conveying power and data from first circuit board  140  to second circuit board  162 , as generally discussed above. 
       FIG. 7  also includes illustrations of spades  60  and  64 , which are the spades in the forefront, when viewing device  12  from the right side, in keeping with the more full illustration of such features and the core and the coil assembly features, rather than a cross sectional view thereof. 
       FIGS. 8 and 9  are respective mechanical register assemblies. Specifically,  FIG. 8  represents a second embodiment of the subject invention generally device  234  while  FIG. 9  illustrates generally a third embodiment of the subject invention device generally  236 . Such second and third devices may comprise cyclometer register mechanical assembly and clock register mechanical assembly devices, respectively. Details of various such assemblies are noted in pertinent ones of the above-referenced patents, incorporated herein by reference, and form no particular details of the subject invention beyond the context of the disclosures herewith. 
     With more specific reference to the representative alternative embodiments of present  FIGS. 8 and 9 , again, both such embodiments include full illustrations of spades  60  and  64 , coil elements  124  and  126 , laminated core  128  and core cover  130 , such that cantilevered connectors  154  and  156  are no longer visible. Since both exemplary embodiments  234  and  236  of  FIGS. 8 and 9  respectively involve various mechanical assemblies, there are no illustrations (as in  FIG. 7 ) for second board  162 , display holder  192  or its associated fingers  190  and  196 , electronic register output  32 , or fixed connector  164 . 
     More particularly, the second embodiment device  234  of  FIG. 8  may include a mechanical wheel assembly, with numbers mounted on a wheel mounting to fingers or extensions of the support chassis  170 . More specifically, exemplary wheel generally  238  represents a plurality of such wheels laterally disposed adjacent one another for providing mechanical register output. 
     As well understood by those of ordinary skill in the art without additional details, such plurality of wheels  238  may be supported within an integral structure, such as having a rear wall generally  240  and front wall  242  thereof. A pair of upper curved fingers generally  244  (only one shown due to the cross sectional nature of  FIG. 8 ) capture an upper edge of rear or back wall generally  240  of the integral cyclometer mechanical register assembly generally  246 . Such curved fingers  244  are preferably integrally formed with chassis  170 , which also provides a pair of lower capture elements generally  248  (only one shown due to the cross sectional nature of  FIG. 8 ) for capturing a lower edge of back or rear wall  240  of mechanical register assembly  246 . 
     As shown, the cantilevered curved nature of upper fingers  244  permit a field technician or manufacturing personnel to flex the curved fingers  244  for introducing or alternately removing mechanical assembly register  246 . Once such mechanical register assembly  246  is secured to chassis  170 , the inner cover  16  may be applied, as otherwise understood from the remainder of the specification. 
     The mechanical register assembly device embodiment  236  of present  FIG. 9  is similar to that of present  FIG. 8 , but has its own form of mechanical register assembly generally  250 . Such mechanical register  250  may comprise a clock register type of assembly, well known to those of ordinary skill in the art. Such assembly  250  may preferably comprise an integral arrangement having rear and front walls  252  and  254 , respectively. As illustrated, the rear wall may be captured or secured by chassis  170 , including an upper pair of elements  208  thereof, and intermediate pairs of fingers  204  thereof, cooperating with both pairs of stop elements  206 . Exemplary support elements  256  and  258  represent mechanical support between rear wall  252  and front wall  254  of mechanical register assembly  250 . 
     As understood by those of ordinary skill in the art, a plurality of relatively smaller dial elements generally  260  are driven clock-style in respective scaled relationships via a series of gears, represented by dotted line generally  262 , and mounted generally in parallel with the respective rear and front walls  252  and  254  of integral mechanical assembly  250 . In some instances of plural dials, alternate dials are rotated either clockwise or counterclockwise. 
     As will be understood by those of ordinary skill in the art, such gears generally  262  are motor driven, as are the respective plurality of wheels  238  of cyclometer register mechanical assembly generally  246 . In general, a basic wire connection between the motor drive of respective mechanical assemblies  250  and  246  may be interconnected with the main or basic metrology circuit board  140 , for driving same. One convenient alternative interconnection for such power (or drive control) may be obtained by the securement of a connector generally to the area  168  of circuit board  140  (not seen in FIGS.  8  and  9 ). Those of ordinary skill in the art are familiar with such motor drive requirements without additional discussion, details of which form no particular aspects of the subject invention. 
       FIG. 10  represents a simplified wiring diagram involving power supply aspects and others of the subject invention. Very briefly, the four spades or plug-ins  60 ,  62 ,  64  and  66  are representative of the paired line inputs and paired load outputs, as illustrated by the schematic diagram. For greater clarity, representations of the full coil assembly including coil members  124  and  126 , and laminated core  128  and core cover  130 , are omitted. However, respective coil elements interconnect input spade  60  with output spade  64  and interconnect input spade  62  with output spade  66 , as generally represented by schematic dotted line elements  264  and  266 , respectively. 
     The  FIG. 10  schematic diagram represents three respective terminal points  268 ,  270  and  272 . Such terminal points respectively correspond, for example, with the three respective cantilevered contacts  154 ,  156  and  158  (see  FIG. 5 ) for creating contacts with the first circuit board (or basic metrology board) generally  140 . See also the schematic representations of  FIG. 11 , discussed in greater detail below. 
     In other words, terminal contacts  268 ,  270  and  272  comprise inputs to the metrology board  140 , such that both Line 1 and Line 2 inputs (taken directly from spades  62  and  60 , respectively) are provided to circuit board  140 , as well as a denominated power supply (“P.S.”) input. 
     In the exemplary embodiment of present  FIG. 10 , varistor generally  274  functions as well known to those of ordinary skill in the art for shunting any line disturbances and for generally protecting the overall wiring circuitry. Typically, for a conventional household power distribution input in the United States, the nominal voltage across Lines 1 and 2 (across spades  62  and  60  and across contacts  268  and  272 , respectively) is 240 volts AC (VAC). As well known to those of ordinary skill in the art, a varistor provides a variable resistance, dependent on an applied voltage level, and therefore provides the above-referenced shunting and protective functions. 
     A reduced “power supply” voltage of nominally 12 volts AC (VAC) is provided at P.S. terminal  270  through use of P.S. capacitor generally  276 , as represented by the circuitry arrangement of the schematic representations of present FIG.  10 . Using for example, a capacitor value of 0.33 microfarads, the nominal 240 volts AC is dropped to 12 volts AC at contact point P.S.  270 . As known to those of ordinary skill in the art, a capacitor acts as an open circuit to DC voltage and otherwise provides a responsive circuit element to AC voltages due to the alternate charging and discharging nature of a capacitor. It is to be understood that different values of components indicated herein or other arrangements for obtaining a power supply may be utilized in accordance with the broader aspects of the subject invention. 
     The schematic diagram of  FIG. 10  further represents the opening  90  (see  FIG. 4 ) associated with baseplate  14 . As discussed above, once the physical arrangements of the current spades, coil assembly and sensing laminated core and core cover are fixed, an open circuit point is still provided by the opening  90  feature. Using various probe technologies (forming no particular aspect of the subject invention), those of ordinary skill in the art will understand that the metrology function may then be calibrated for the specific physical arrangement of components as implemented on a given device by a given arrangement of the subject invention. Calibration may include “programming” the device with a slight correction factor to account for such specific physical embodiment. After such operation, either one of alternative modular plugs  94  and  96  (see FIG.  3  and its related discussion) may be seated within opening  90 , so that the otherwise open circuit is completed for normal field operation, with calibration complete. 
       FIG. 11  is a block diagram representation of additional power supply features and other features in accordance with the subject invention, including their relation to powering the metrology function and “communicating” among basic circuit board  140  and any other circuit boards associated therewith, such as via a fixed connector generally  164 . 
       FIG. 11  represents the entire metrology board generally  140  in dotted line block diagram fashion, and likewise represents fixed connector generally  164 . A portion of the features of each such component metrology board  140  and fixed connector  164  are further diagrammatically represented within their dotted line block diagram representations. Representing the relationship with the wiring diagram of  FIG. 10 , respective terminal contact points  268 ,  270 , and  272  are illustrated in  FIG. 11  as all contacting with metrology board  140 . As referenced above, preferably such contacts include cantilevered extending connections (generally  154 ,  156  and  158 , respectively) that are brought into contact with metrology board  140  whenever it is seated in its desired position relative the coil assembly and other features in accordance with the subject invention. 
     Included as part of metrology board generally  140  is a power supply network generally  278 . As represented, such power supply network  278  receives at least two inputs, via Line 1 terminal contact  268  (nominally 240 VAC) and the power supply P.S. terminal contact  270  (nominally 12 VAC). Power supply networks which may be carried on circuit boards are well known to those of ordinary skill in the art, and particular details of power supply network  278  form no particular aspect of the subject invention. See also various patents incorporated herein by reference, as referenced above. 
     Generally in accordance with the subject invention, power supply network  278  operates on the inputs thereto for outputting plus or minus 2.5 volts DC (VDC). As represented in earlier figures, fixed connector  164  preferably engages an edge area generally  168  of metrology board  140 , for achieving various connections therewith. As represented in present  FIG. 11 , respective terminal positions B and C of fixed connector generally  164  correspond respectively with the plus and minus 2.5 VDC outputs of power supply network  278 . A Line 1 ground connection is also carried down to fixed connector  164  at terminal A thereof (see FIG.  11 ). 
     Metrology board  140  also carries circuit board components for performing the basic kilowatt hour data function of a device in accordance with the subject invention. Such actual function is represented by metrology network  280 , examples of which are well known to those of ordinary skill in the art and details of which form no particular aspect of the subject invention. See also various patents incorporated herein by reference, as referenced above. 
     Referring more specifically to the diagrammatic representation of present  FIG. 11 , it may be observed that the respective Line 1 terminal contact  268  and Line 2 terminal contact  272  associated with metrology board  140  result in application of such respective line voltages to metrology network  280  and also to a terminal G of fixed connector  164 . Metrology network  280  has at least four other outputs, three of which are associated with terminals of fixed connector  164  as illustrated, and a fourth via line  282  which directly outputs an available motor output signal, such as for driving any mechanical register assemblies (see  FIGS. 8 and 9  and their related discussion). 
     Referring more particularly to the three outputs D, E, and F to fixed connector  164  from metrology network  280 , the following is to be understood. The output signal coming from metrology network  280  to terminal D of fixed connector  164  constitutes a sign (+ or −) indicative of the direction of power flow (which is typically negative during a consumption mode and plus during any production mode, such as where power is being put back on to the grid by the ultimate customer). 
     The output of metrology network  280  resulting in terminal E of fixed connector  164  relates to a pulse output, reflecting data generation by the metrology network  280 . Such pulse output E may be utilized for various functions. For example, it may be utilized to modulate an infrared LED  215  associated with light pipe  214  (see discussion above) for providing a signal external to casings for a device in accordance with the subject invention. A customer (for example utility company field personnel) may check such pulse signal for proper operation of the meter without interruption thereof. Additionally, it is to be understood that fixed connector  164  is also interconnected with any other circuit boards being utilized, such as an exemplary second circuit board  162  (see FIG.  4  and its related discussion). Accordingly, such pulse output signal E is being passed to such higher level function circuit board for possible use there. 
     Likewise, metrology network  280  generates on terminal F of fixed connector  164  a digital clock synchronization pulse, such as a 60 Hertz square wave, which is passed via such connector  164  to any further circuit boards for use thereby. 
     As a net result of the schematic arrangements of present  FIG. 11 , line power (240 VAC), power supply voltage (plus or minus 2.5 VDC) and various data and clocking information is transmitted via fixed connector  164  to a further circuit board, such as high level function board  162 . Such communication is one-way, meaning that the subsequent circuit board makes use as needed of such power and data, without necessarily reflecting any feedback along fixed connector  164  to metrology board  140 . Those of ordinary skill in the art will understand that the diagrammatic representation of fixed connector  164  in  FIG. 11  omits for clarity the further connections that would be made from such connector to additional circuit boards, as represented in other figures herewith and explained in their related discussion. 
     Numerous modifications and variations may be made for specific embodiments of the subject invention without departing from the broader spirit and scope thereof. For example, multiple additional circuit boards may be utilized with a basic metrology board  140 , instead of a single additional such circuit board  162 . In such instance, additional functions may be selectively provided for further customizing a meter product for a given customer, and wiring arrangements and connectors alike could be modified as needed in accordance with the subject invention for providing such a multiple board arrangements. 
     Another aspect of certain embodiments of the present invention is that all flexible leads have been eliminated throughout the devices. This means that a highly stable configuration is provided. For example, the coil elements ( 124  and  126  of FIG.  4  and diagrammatic representations  264  and  266  of  FIG. 10 ) do not touch the core  128  ( FIG. 4 ) or core cover  130  (FIG.  4 ). The respective holes and posts relative to the baseplate help align the core and coil. Introduction of a calibration factor (as discussed above) takes care of fine tuning or exact position inaccuracies. Otherwise, the subject exemplary arrangements help provide fixture to the basic flux path utilized for metrology operations. 
     Still further, it is preferred that ultrasonic welding be utilized to capture all of the basic components in place once fully assembled as desired. With opening  90  provided in baseplate  14  (prior to introduction of either of alternative plugs  94  and  96 ), the subject metering device can still be calibrated for precision. The multiple size steps and splined posts initially help align and fit the circuit board to the laminated core, and align other elements, so that all basic desired relationships are established, and then fine tuned by such calibration. 
     It is to be understood that additional variations may be practiced. For example, while any second (or additional) circuit board(s) may be provided with plus or minus 2.5 VDC via fixed connector  164 , in some embodiments such additional boards may make use of their own power supply. All such modified embodiments, as may be desired for a user in a particular circumstance, are intended to come within the broader spirit and scope of the subject invention. 
     Similarly, internal structural changes may be practiced. For example, light pipe  214  (see FIG.  4  and others) is generally shown as a straight shaft. In the illustrated embodiments, it isolates the output of a particular infrared LED  215  for showing that the lower or basic metrology board  140  is properly working. However, in certain embodiments, the light pipe may be more S-shaped instead of just straight, to accommodate desirable modifications in the internal component arrangements of a given embodiment. 
     Other variations may relate to the forms of data outputs and/or reset actuators utilized. For example, many embodiments may not have multiple reset actuators with different functions, but only a most basic “reset to zero” function in a fairly basic or simple standard electricity meter embodiment. All such versions and embodiments are intended to come within the spirit and scope of this invention. 
     While various forms of mechanical registers and electronic registers have been specifically represented, other sizes and shapes of registers may be generally practiced, with the chassis  170  or other securing features modified accordingly, per the broader teachings of this invention. 
     Regarding outputs, various alternative arrangements may be practiced. For example, with no metal utilized in otherwise plastic faceplate or cover features, an antenna  261  may be provided directly onto a circuit board (such as additional or second circuit board  162 ) for radiating metering information directly from such circuit board without requiring a second antenna. Any such arrangement may involve greater frequency communications both in and out, meaning that some devices may permit the high level functions of an additional circuit board to be queried by a field technician or reader, for calling for various forms of output, or otherwise controlled or reprogrammed by communications in. In some instances, such higher level function boards may incorporate a non-volatile memory for maintaining determined data even during power outages. 
     Other forms of output which may be utilized are represented by the pulse output (terminal E of fixed connector  164 —FIG.  11 ). Such output is two fold in that it permits and enables the light pipe form of output (as referenced above) and the communication of a basic metrology signal from lower or basic metrology board  140  to a higher order or higher level function circuit board generally  162 . 
     Still further, as broadly referenced above, such higher level circuit board may be provided with connections for optical ports (see elements  40  and  42  of present FIGS.  1  and  2 ), by which communications may also be directed in and out of the electric meter. Also, telephone line connections may be provided by including a modem within a given device, both with wires or with wireless transmission, such as cellular telephone service. 
     Generally in accordance with this invention, it is to be understood that all of such modifications and variations may be practiced and obtained based on use of a basic combined arrangement in accordance with this invention, comprising, for example, the main baseplate  14 , main or basic metrology circuit board  140 , and chassis  170  (or variations thereof) for support of additional internal components, combined with the support posts and arrangements of baseplate  14 . By decentralizing certain features (such as splitting up basic and higher level functions into separate circuit boards), the present invention achieves advantages with a modular approach not heretofore obtainable. Likewise, by the various clamping action support arrangements and snap fit technologies, an entire array of various modular meter configurations (and corresponding methodologies) may be provided without requiring any screws or similar individual connectors or fasteners. Therefore, all such modifications and variations within the broader scope of the subject invention as would be readily apparent to one of ordinary skill in the art are intended as part of the subject invention.