Multi-functional pH meter and fabrication thereof

Details Multi-functional pH meter and fabrication thereof Multi-functional pH meter and fabrication thereof

2008-03-25

2008-03-25

Nguyen, Vincent Q. (Department: 2858)

Electricity: measuring and testing

Electrolyte properties

Using a ph determining device

Reexamination Certificate

active

11465776

ABSTRACT:
A multi-functional PH meter and the fabrication thereof are disclosed. The multi-functional pH meter immediately displays the measurement result on a liquid crystal display and saves in a compact flash card so as to provide portable functionality. In addition, the multi-functional pH meter has data communication functionality with a computer. Finally, the drift and hysteresis software calibration technique is applied. Thus, this method can increase ion detection accuracy and system reliability. The multi-functional pH meter includes a sensor unit, an analog signal processing unit, a microprocessor unit, the liquid crystal display unit, the compact flash card unit and a data transmission unit.

REFERENCES:
patent: 5814280 (1998-09-01), Tomita et al.
patent: 2003/0132755 (2003-07-01), Feng et al.
patent: 2005/0147741 (2005-07-01), Hsiung et al.
patent: 2007/0071648 (2007-03-01), Busch et al.

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