Surface-temperature sensing method and apparatus
US4907894A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1988 |
| Grant date | Mar 13, 1990 |
| Priority date | — |
| Expiry date | Dec 20, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K1/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus suitable for measuring the surface temperature of a moving strip at an elevated temperature comprises a sensing head connected to a pneumatic actuator through a ball joint. Air under pressure is supplied to a chamber in the head and flows through a ring of passages to form an air cushion between the sensing head and the surface S whose temperature is to be measured. Part of the air flows inward across the surface S to a central aperture in the bottom plate of the head and its temperature is measured by a thermocouple in the aperture. The aperture leads to a cavity above plate and the cavity is vented by passages. The temperature recorded by the thermocouple is a measure of the temperature of surface S.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.