Method and apparatus for measuring the amount of moisture that is associated with a web of moving material
US4006358A · kind A · utility
34Cited by
3References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 12, 1975 |
| Grant date | Feb 1, 1977 |
| Priority date | — |
| Expiry date | Jun 12, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/314
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved method and apparatus for measuring the moisture contained by a moving sheet of web material includes a water simulating filter in a typical dual wavelength moisture gauge which provides transmission ratios. The relationship between the change of ratios of various samples of the material with different moisture content with the change of the filter ratios when various layers of moist dirt are placed in the gauge transmission path is used to provide a corrected transmission ratio from which water weight can easily be determined. The method is also applicable to polymer coatings or similar substances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.