Level indication

Details Level indication Level indication

1985-06-21

1987-01-06

Rowland, James L.

Communications: electrical

Condition responsive indicating system

Specific condition

73313, 324 99D, 324140D, 340 59, G08B 2100

Patent

active

046350438

ABSTRACT:
A level indication has a ratio-measurement mechanism whose measurement coil can be connected to a source of current (6) via a switch element (12). This switch element (12) is controlled by the output of a comparator (10) to the input side of which a voltage signal from a transmitter (5) monitoring the level and the output of a frequency transmitter (11) are fed. Between the transmitter (5) and the comparator (10) there is arranged a damping device (8) so that the signal coming from the transmitter (5) is made stable before it arrives at the comparator (10).

REFERENCES:
patent: 3316547 (1967-04-01), Ammann
patent: 3502983 (1970-03-01), Ingle et al.
patent: 3999123 (1976-12-01), Thoener
patent: 4087796 (1978-05-01), Brown
patent: 4254406 (1981-03-01), Meares

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