| 摘要 |
<p>Modular metering system 10 comprises at least one slave module 14a-f which measures a parameter (e.g. electricity, gas, water, air or steam usage, water or air quality or foot-fall) and a master module 12 which communicates electronically with it (e.g. wirelessly or via communications module 16). Each slave module may include an electricity meter (e.g. a three-phase meter or three single phase meters) for measuring electricity consumption by a remotely located load. The slave modules may be connected to (and releasable from) one another and the master module via a DIN rail (22, Figure 3) and thereby also automatically to an internal data and/or power bus. The master module may include an electronic processor, memory, data logger and a user interface 18 displaying information polled from a slave module selected via keypad 20; it may also calibrate the slave modules.</p> |
