Process for making sensor for detecting fluid flow velocity or f

Details Process for making sensor for detecting fluid flow velocity or f Process for making sensor for detecting fluid flow velocity or f

1981-01-27

1982-11-30

Lusignan, Michael R.

Coating processes

Electrical product produced

Welding electrode

29620, 338 25, 338 28, 338308, 338309, 427102, 427125, 427401, H01C 704, B05D 306, B05D 512

Patent

active

043615970

ABSTRACT:
A sensor for detecting a fluid flow velocity or flow amount with high precision and high reliability is made by applying a conductor paste comprising platinum powder and an organic vehicle to the outer surface of a fine inorganic insulating tube, followed by drying and firing, thereby forming a platinum film, processing the platinum film into a spiral band form by laser application, inserting a lead wire into the insulating tube, applying a platinum conductor paste to between the spiral platinum band and the lead wire, followed by drying and baking, thereby connecting the spiral platinum band film to the lead wire.

REFERENCES:
patent: 3864825 (1975-02-01), Holmes
patent: 4146957 (1979-04-01), Toenshoff
patent: 4191938 (1980-03-01), Gow et al.
patent: 4222025 (1980-09-01), Iles et al.
A Thick Film Platinum Resistance Thermometer, Iles, G. S. et al., 1975.

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