Liquid level sensor, used in an automatic station for preparing

Details Liquid level sensor, used in an automatic station for preparing Liquid level sensor, used in an automatic station for preparing

1986-11-14

1988-10-18

Noland, Tom

Measuring and testing

Sampler, sample handling, etc.

Automatic control

222 64, 23304R, 2386416, G01N 3500, G01F 2324

Patent

active

047778326

ABSTRACT:
A new liquid level sensor, suitable for use as an auxiliary device in an automatic station for preparing immunologic dosages, consists of a U pipe containing water, and provided with a resistivity sensor at the end of one of its branches, the other branch being connected with the terminal of the liquid dispensing or suction system of the automatic station in such a way that a very small pressure difference within the system results in a water level variation in both branches and in the relevant activation (or disactivation) of the resistivity sensor.

REFERENCES:
patent: 2423397 (1947-02-01), Loumiet et al.
patent: 3477460 (1969-11-01), Dotto
patent: 3687289 (1972-08-01), Tischler
patent: 3813945 (1974-06-01), Crumel

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