The Babcock & Wilcox Company

Elsag International B.v.

Gordon D Woolbert

John W Robertson, Jr

Scotty Y Jewett

John J Fry

George R Hall, Ii

Robert A Smith

David F Ross

Daniel C Barnett

An industrial process oxygen analyzer, and method of using same, incorporates an automotive oxygen sensor to minimize the criticalness of controlling heater temperature during operation. Higher sensor heater temperature, required to accommodate the automotive oxygen sensor, is achieved by application of higher supply voltage to the sensor heater. Current limiting of the heater supply circuit reduces stress on the sensor heater, even at the higher operating temperature.

Automotive oxygen sensor for use in an industrial process analyzer

Method of applying an automotive type oxygen sensor for use in an

An automatic calibration and control system for a combined oxygen and combustibles analyzer comprises a process control computer which automatically calibrates a combined oxygen and combustibles analyzer. The computer initiates a calibration sequence through a mechanical unit which introduces calibration gases to the analyzer. The computer calculates a drift adjustment for both oxygen and combustibles and applies it to the incoming oxygen and combustibles signal from the analyzer to arrive at calibrated oxygen and combustibles signals. The system allows both oxygen and combustibles signals to be calibrated automatically and concurrently with minimal operator interface.

Automatic calibration and control system for a combined oxygen and

A safety control system for a coal pulverizing mill is disclosed. The control system utilizes measurements of the net oxygen level and the carbon monoxide equivalent (CO.sub.e) level of the combustible gases within the pulverizing mill. First levels of the net oxygen and the rate of carbon monoxide equivalent change in the pulverizing mill are utilized in a control logic system to actuate alarms. Second levels of the net oxygen and the carbon monoxide equivalent (CO.sub.e) level in the pulverizing mill are utilized to accomplish the inerting of the mill.

Apparatus for monitoring low-level combustibles

Apparatus for monitoring low level combustibles

Growing community of inventors

North Canton, OH, United States of America

Gordon D Woolbert