The definition of delinquent is something improper or criminal in nature or something that is late in being done. An example of delinquent behavior is robbing a store. An example of delinquent is a credit card payment that should have been paid several months earlier.
Fire hydrant meters are a specialized type of portable turbine meter attached to a fire hydrant to measure water flowing out of the hydrant. The meters are normally made of aluminium to keep their weight low and usually have a 3 capacity.
A smart meter is usually an electronic device that records consumption of electric energy in intervals of an hour or less and communicates that information at least daily back to the utility for monitoring and billing. Smart meters enable two-way communication between the meter and the central system.