Claims
- 1. An all solid state electrode system for the measurement of the pH of a fluid stream including a cell body having a metalloid electrode composed of ultra-pure antimony combined with an insulated from an electrode of a noble metal of the platinum group of metals, said noble metal electrode being a reference electrode which is inert to chemical attack by the fluid stream of which the pH is being measured, said noble metal electrode having a body portion formed of a conducting material and a noble metal on and covering an end thereof and in contact with said body portion, the noble metal covered end of said noble metal electrode and said metalloid electrode being immersed in the fluid stream, leads connecting each electrode to low impedance electronic pH instrumentation, and an input resistor connected across said leads, the electrical path being completed and a voltage being produced proportional to the pH in the fluid stream for displaying on the electric low impedance pH instrumentation the measurement of the pH in the field stream, said metalloid electrode being composed of electronics antimony of 99.999% purity.
- 2. An all solid state electrode system in accordance with claim 1, wherein said two electrodes are insulated one from the other and said insulation is formed providing a sheath completely surrounding each electrode, said pure antimony electrode extending into said fluid stream a greater distance than said noble metal electrode and the insulation surrounding said noble metal electrode extending beyond the noble metal end thereof.
BRIEF SUMMARY OF THE INVENTION
This application is continuation-in-part Continuation of application Ser. No. 022,472 filed Mar. 21, 1979, and now abandoned.
US Referenced Citations (8)
Foreign Referenced Citations (2)
Number |
Date |
Country |
758623 |
May 1953 |
DEX |
2328921 |
Jan 1974 |
DEX |
Continuation in Parts (1)
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Number |
Date |
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Parent |
22472 |
Mar 1979 |
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