Neptune Water Meter Company

Donald J Kullmann

William G Karjalainen

Daniel A Seltzer

Raymond L Kirby

Rodney G Harris

Compound liquid flow meter

This data transmitting apparatus is illustrated in a system for the remote reading of water meters. It includes a passive transmitter operated by the meter, a receiver including a source of energy, and means for connecting the receiver and its energy source to the transmitter. The receiver includes electrical loading means enabling it to read a submerged meter. The receiver is compatible with one type of transmitter having 14 output wires and with another type having only three. The data, e.g., a reading of a meter, is transmitted as binary data in a word of 16 characters, each comprising four bits. A pulse coding system is insensitive to noise, and includes a first bit detector for each character, and a final character detector for each word. The receiver detects open circuits in the transmitter and produces an error signal in response to such open circuits. The receiver and transmitter may be coupled through a manual connector. The receiver may be a portable unit and a movable connector element on the receiver may cooperate with a fixed connector element mounted on an exterior wall of a building. Delayed start means prevents beginning of a reading until transients due to coupling of the connector elements have died out.

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Tallassee, AL, United States of America

Donald J Kullmann