Abstract: A turbine meter is disclosed in which a sensing rotor downstream from the metering rotor senses changes in the exit angle of the fluid leaving the metering rotor, the output from the sensing rotor being combined with the output from the metering rotor to produce a corrected output indicative of the flow of fluid through the meter. The output from the sensing rotor and the output from the metering rotor may be compared to provide an indication of deviation from performance at calibration.

Abstract: A turbine meter is disclosed in which a sensing rotor downstream from the metering rotor senses changes in the exit angle of the fluid leaving the metering rotor, the output from the sensing rotor being combined with the output from the metering rotor to produce a corrected output indicative of the flow of fluid through the meter. The output from the sensing rotor is utilized through a closed loop feed back system to modify the operation of the metering rotor in accordance with variations in the exit angle of the fluid leaving the metering rotor.

Abstract: A system is disclosed for storing signals indicative of a customer's consumption of a utility as measured by a meter, such as adapted to measure the flow of water, gas or electricity, for example, and for storing a corresponding data word to permit subsequent readout from the system of utility consumed and of a data word identifying the customer consuming the service, whereby the utility company providing the service may appropriately and accurately prepare a bill for the customer.