Abstract: The present invention comprises systems and methods related to monitoring of energy usage on a power line. In a preferred embodiment, this system comprises (a) an electronic microprocessor-controlled digital electricity metering device coupled to the power line and comprising a non-volatile non-battery-powered data-storage device, wherein the metering device is capable of interval metering and of receiving a data request and transmitting data in response to the request over the power line; and (b) a data collector (preferably, a transponder) coupled to the metering device via the power line. The data collector is preferably capable of (i) receiving data from and transmitting data to the metering device over the power line, (ii) storing data received from the metering device over the power line, and (iii) receiving data from and transmitting data to a remotely located computer (preferably, a billing computer).

Abstract: According to one embodiment, a recipe for use with a process control system includes unit procedures (to be executed on units) and information that identifies unit procedures that must be executed on units that are physically connected to one another, unit procedures that must be executed on the same unit, and/or unit procedures that must be executed on different units. According to another embodiment, a method for configuring a recipe includes the step of storing information in memory that identifies unit procedures of the recipe that must be executed on units that are physically connected to one another, unit procedures of the recipe that must be executed on the same unit, and/or unit procedures of the recipe that must be executed on different units.

Abstract: Apparatus for cleaning the air nozzles of a chemical recovery boiler, including a scraping sleeve slidable back and forth in the nozzle for removing built-up deposits. Also included is an air damper for regulating air flow to the nozzle.