Blast furnace tuyere sensor system

Details Blast furnace tuyere sensor system Blast furnace tuyere sensor system

1994-07-29

1996-01-02

Peng, John K.

Communications: electrical

Condition responsive indicating system

Specific condition

340540, 356 5, 266 81, 266267, 266269, G08B 1712

Patent

active

054812470

ABSTRACT:
A blast furnace tuyere sensor system comprising a conditioning circuit including a D.C. power supply, a potentiometer for base loading circuit voltage, and a photosensitive resistor sensor which outputs an analog voltage signal proportional to the intensity of the light falling on the sensor, and method and means to measure the output voltage signal and to actuate alarms when the measured voltage signal deviates in a predetermined manner or amount from the base load voltage indicative of a plugged tuyere, a bright tuyere or a defective sensor.

REFERENCES:
patent: 2448199 (1948-08-01), Vollrath
patent: 3178234 (1965-04-01), Schulte et al.
patent: 4486743 (1984-12-01), Brown
patent: 4619533 (1986-10-01), Lucas et al.
patent: 5126721 (1992-06-01), Butcher et al.
patent: 5173245 (1992-12-01), Hall et al.
patent: 5223908 (1993-06-01), Scott et al.

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