Pyrometer with sighting window cleanliness monitor

US4435093A · kind A · utility

Assignee

• Bethlehem Steel Corporation · US

Inventors

• Richard H. Krause · Bethlehem, US
• Thomas Pfeiffer · Kumhausen, DE
• Vincent Victor Horvath · Bethlehem, US

Key dates

• Filing date: Dec 8, 1981
• Grant date: Mar 6, 1984
• Expiry date: Dec 8, 2001

Classification

• Technology area (CPC G): Physics
• CPC primary: G01J5/026
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Coke guide and coke oven infrared pyrometer degrading is minimized to continuously permit better accuracy and reliability in hostile environment of coke mass and heat, dust and/or dirt present in many coke plant areas. These benefits are obtained using production-worthy pyrometer equipment having a purged pyrometer with any of three window cleanliness monitors to determine errors and automatically correcting for same through self-calibration.