Sensor for testing light and weather resistance of samples

US4644166A · kind A · utility

Assignee

• W. C. Heraeus GmbH · DE

Inventors

• Walter Sturm · Hearst, CA
• Helmut Becker · Limeshain, DE
• Jurgen Witt · Großkrotzenburg, DE
• Werner Fritz · Steinau an der Straße, DE
• Ursula Eysholt · Hanau, DE

Key dates

• Filing date: May 12, 1986
• Grant date: Feb 17, 1987
• Expiry date: May 12, 2006

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N17/00
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A sensor for use in testing the effect on materials of irradiation and weathering uses solar cells (10) to provide power and uses a transmitter (3) to continuously read out its measurements without interrupting the testing process. The sensor features a number of receptor cells (2) for various spectral ranges and a temperature sensor (17), whose measurements are multiplexed and transmitted under the control of a control logic 18. The receptor cells (2), the photo cells (10) and the electronics (16) are all contained in a preferably cylindrical quartz glass tube (4). The self-contained nature of the sensor and the continuous, immediate read-out of measurements eliminate external wiring requirements and speed up the testing process.