Coating processes – Electrical product produced – Metallic compound coating
Patent
1995-06-05
1996-11-12
Tung, T.
Coating processes
Electrical product produced
Metallic compound coating
2041921, 20419211, 20419212, 20419214, 20419215, 204419, 204433, 2057875, 427523, 427524, 427529, G01N 27333, C23C 1410, C23C 1434
Patent
active
055737986
ABSTRACT:
This invention relates to a pH measuring electrode having a sensor film which is sensitive to a hydrogen ion (H.sup.+) in the solution. The pH measuring electrode of this invention has a sensor film of a metal oxide deposited on an electrically insulative ceramics substrate so that the sensor film can be very miniaturized in its size. Therefore, the entire pH measuring electrode can be made considerably small and simple in construction. Also, this invention provides another pH measuring electrode which further includes a porous film of an insulation material coated on the surface of the metal oxide sensor film so that the sensor film is not affected by any coexistent substances.
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Kato Akihiko
Katube Teruaki
Taguchi Tomio
Yamasato Masaharu
Yanagida Yoshiki
Toa Electronics Ltd.
Tung T.
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