Digital car meter riding changing software

#Digital car meter riding changing software series

Aron's meter recorded the total charge used over time, and showed it on a series of clock dials. Hugo Hirst of the British General Electric Company introduced it commercially into Great Britain from 1888. The first accurate, recording electricity consumption meter was a DC meter by Dr Hermann Aron, who patented it in 1883. In 1885 Ferranti offered a mercury motor meter with a register similar to gas meters this had the advantage that the consumer could easily read the meter and verify consumption. The agent would then reset the meter to zero by inverting it. In practice the consumer would get the supply company's agent in before the supply ran out and pay only for the charge consumed as read from the scale. It was therefore necessary for the consumer to pay for a further supply of electricity, whereupon, the supplier's agent would unlock the meter from its mounting and invert it restoring the mercury to the reservoir and the supply. Once the mercury pool was exhausted, the meter became an open circuit.

Like all other DC meters, it recorded ampere hours. As current was drawn from the supply, electrochemical action transferred the mercury to the bottom of the column. This consisted of a vertically mounted glass structure with a mercury reservoir at the top of the meter. The electrochemical meter was labor-intensive to read and not well received by customers.ДЄn early type of electrochemical meter used in the United Kingdom was the 'Reason' meter. At periodic intervals the plates were removed and weighed, and the customer billed. Thomas Edison at first worked on a direct current (DC) electromechanical meter with a direct reading register, but instead developed an electrochemical metering system, which used an electrolytic cell to totalise current consumption. Many experimental types of meter were developed. For example, if a meter recorded that 100В ampere hours had been consumed on a 200-volt supply, then 20В kilowatt-hours of energy had been supplied. Since the voltage of the supply should remain substantially constant, the reading of the meter was proportional to actual energy consumed. ДЄn Aron type DC electricity meter showing that the calibration was in charge consumed rather than energyДЄs commercial use of electric energy spread in the 1880s, it became increasingly important that an electric energy meter, similar to the then existing gas meters, was required to properly bill customers, instead of billing for a fixed number of lamps per month.ДC meters measured charge in ampere hours. Also, in some areas meters have relays for demand response load shedding during peak load periods. 'Time of day' metering allows electric rates to be changed during a day, to record usage during peak high-cost periods and off-peak, lower-cost, periods. When energy savings during certain periods are desired, some meters may measure demand, the maximum use of power in some interval. They are usually read once each billing period.

They are typically calibrated in billing units, the most common one being the kilowatt hour ( kWh). North American domestic electronic electricity meterДЄn electricity meter, electric meter, electrical meter, energy meter, or kilowatt-hour meter is a device that measures the amount of electric energy consumed by a residence, a business, or an electrically powered device.Д®lectric meter or energy meter measures the total power consumed over a time interval.Д®lectric utilities use electric meters installed at customers' premises for billing and monitoring purposes.

Digital car meter riding changing software