Disposable sensor

Details Disposable sensor Disposable sensor

1989-09-19

1991-05-21

Wieder, Kenneth

Electricity: measuring and testing

Electrolyte properties

Using a conductivity determining device

73 611R, 219505, 324444, 324703, 324715, 324724, G01N 2702

Patent

active

050178750

ABSTRACT:
Two lead wires for each, connected to opposite ends of a heat generating element are secured to a holder. These lead wires form four-point-terminals at their other ends and thereby a disposable sensor is provided. A current source and a voltmeter are connected to the terminal and changes in various properties of fluid are determined on the basis of a value of current supplied from the current source and a value of voltage measured by the voltmeter.

REFERENCES:
patent: 3414811 (1968-12-01), Carter
patent: 3579097 (1971-05-01), Luden
patent: 3935742 (1976-02-01), Rybak
patent: 4251809 (1981-02-01), Cheney
patent: 4532797 (1985-08-01), Yang
patent: 4767994 (1988-08-01), Hopkins
patent: 4888818 (1989-12-01), Schmitt et al.

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