Measuring equipment for isolating a plurality of probes contacti

Details Measuring equipment for isolating a plurality of probes contacti Measuring equipment for isolating a plurality of probes contacti

1998-01-27

2000-09-19

Larkin, Daniel S.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

324438, 324439, G01N 2727

Patent

active

061195081

ABSTRACT:
Measuring equipment, such as a portable pH meter system, can include a plurality of probes for measuring different properties of a sample with each of the probes contacting the sample simultaneously. A reference source line connected to an appropriate reference source can be connected to each probe, while a signal line connected to each probe can provide a measurement signal. A switch assembly is provided for each of the probes in order to isolate the respective probes from each other to prevent any interference when measuring the sample.

REFERENCES:
patent: 4777444 (1988-10-01), Beijk et al.
patent: 4921582 (1990-05-01), Wang et al.
patent: 5103179 (1992-04-01), Thomas et al.
patent: 5483164 (1996-01-01), Moss et al.
patent: 5543717 (1996-08-01), Kordas
patent: 5581189 (1996-12-01), Brenn
"Problems and Solutions in pH Measurement," by S.C. Creason et al., ISA Transactions 1977, vol. 16, No. 3.

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