Hydrologic data acquisition system

Details Hydrologic data acquisition system Hydrologic data acquisition system

1985-06-19

1988-01-19

Gruber, Felix D.

Boots, shoes, and leggings

364550, 346 33R, G01F 2300, G06F 1520

Patent

active

047207990

ABSTRACT:
An apparatus records fluid level movement using a potentiometer that is rotated by a tape attached to a float and a counterweight. The output from the potentiometer is recorded by a microprocessor which is presettable for desired time intervals. Static friction in the moving parts causes small fluid displacement to go unrecorded until they accumulate to produce a larger rotation of the potentiometer, resulting in inaccurate data recording termed "staircasing." To overcome staircasing, before a reading is taken, an impactor made up of a solenoid with a spring-loaded core impacts the tape with sufficient magnitude such that the resultant movement and oscillation of the tape will overcome the static friction, resulting in a smooth, accurate data record.

REFERENCES:
patent: 4229798 (1980-10-01), Rosie et al.
patent: 4249186 (1981-02-01), Edwards
patent: 4313114 (1984-04-01), Lee et al.
patent: 4471656 (1984-09-01), Sanders et al.
patent: 4476535 (1984-10-01), Loshing et al.
patent: 4516213 (1985-05-01), Gidden
patent: 4595932 (1986-06-01), Ruhl

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