Apparatus for the collection and measurement of the amount of mercury vapors present in a volume of air or other gases
Abstract
Abstract Apparatus for the collection and measurement of the amount of mercury vapors present in a volume of air or other gases. The apparatus includes a hollow chamber having a noble metal absorbent mounted therein for the absorption of mercury vapor present in gases passed therethrough, a power source connected to the absorbent for heating thereof, a light source mounted at a first end of the chamber, a first photo cell at a second end of the chamber positioned to receive a beam of light emanating from the lamp passing through the chamber, a mercury vapor reservoir adjacent the first photo cell and positioned in order that the beam of light emanating from the lamp passes through the reservoir prior to receipt thereof by the first photo cell, a second photo cell at a second end of the chamber positioned to receive a beam of light emanating from the lamp passing through the chamber without passing through the mercury vapor reservoir, a means for measuring the absorbence of the first and second photo cells and calculating the differential when the means for heating is activated, and a means for exiting the gases after the activation and measurement has been completed.
Inventors
- 👤 P Gant
- 👤 B Motes
- 👤 J Aylor
Bibliographic Details
Claims Analysis
Total Claims: 7References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |