Multiple on-line sensor systems and methods

Details Multiple on-line sensor systems and methods Multiple on-line sensor systems and methods

1994-04-13

1996-03-05

Bell, Bruce F.

Electrolysis: processes, compositions used therein, and methods

Electrolytic analysis or testing

For oxygen or oxygen containing compound

204401, 204406, 204408, 204427, 204428, 204400, 324512, 324522, 324537, 324754, 324755, 324759, 324760, 324763, 324555, 110185, 205784, G01N 2726, G01R 3108, F23N 500

Patent

active

054964504

ABSTRACT:
A control device and associated methodology select from at least two on-line sensors to assure an accurate and reliable feedback input to control the heat treating conditions within a furnace. The device and methodology also serve to provide an "alert" or "early warning" of gradual degradation of sensor performance, before ongoing heat treating operations are adversely affected.

REFERENCES:
patent: 3938075 (1976-02-01), Reddy
patent: 3948228 (1976-04-01), Luchaco
patent: 4337516 (1982-06-01), Murphy et al.
patent: 4381075 (1983-04-01), Cargill et al.
patent: 4672997 (1987-06-01), Landis et al.
patent: 4736320 (1988-04-01), Bristol
patent: 4744246 (1988-05-01), Busta
patent: 5273640 (1993-12-01), Kusanagi et al.
Product Manual; Honeywell; UDC 5000 Ultra-Pro Universal Digital Controller Product Manual; 51-51-25-17c; Mar. 1993.
Types of Heat-Treating Furnaces; Smith, Holcroft, A Division of Thermo Process Systems, Inc.; Heat-Treating Equipment; pp. 465-474 no month or year available.
Check Out Carbon Control System Step By Step; Blumenthal et al; Furnace Control Corp; Aug. 1991.

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