Claims
- 1. A turbidimeter for measuring the turbidity of a liquid containing particles, comprising:
(a) sample receiving chamber means having inlet and outlet means for liquid sample ingress into said chamber means and egress therefrom; (b) light source means for projecting a light beam into said chamber means; (c) detector means for detecting light scattered by said particles in said liquid sample in said chamber means; wherein said detector means has a field of view which intersects said light beam in said chamber means; and (d) light trap means for trapping said light beam and preventing said light beam from radiating to said detector means as stray light.
- 2. The turbidimeter in accordance with claim 1, wherein said light source means further comprises a collimating lens for collimating said light beam.
- 3. The turbidimeter in accordance with claim 2, wherein said detector means further comprises focus means for focusing said light scattered by said particles in said field of view.
- 4. The turbidimeter in accordance with claim 1, wherein at least a portion of said light trap means is within said field of view of said detector means.
- 5. The turbidimeter in accordance with claim 1, further comprising refracting means between said light source and said liquid sample.
- 6. The turbidimeter in accordance with claim 5, wherein said refracting means comprises a prism.
- 7. The turbidimeter in accordance with claim 1, further comprising refracting means between said detector means and said liquid sample.
- 8. The turbidimeter in accordance with claim 7, wherein said refracting means comprises a prism.
- 9. The turbidimeter in accordance with claim 1, wherein said chamber means further comprises a bubble trap for removing bubbles present in said liquid sample.
- 10. The turbidimeter in accordance with claim 1, wherein said chamber means includes an interior surface, and wherein said chamber means further comprises a flow diverter which defines a volume between said interior surface of said chamber means and said flow diverter.
- 11. The turbidimeter in accordance with claim 10, wherein said flow diverter directs flow of said liquid downwardly along said interior surface of said chamber means and then upwardly through said light trap means.
- 12. The turbidimeter in accordance with claim 1, wherein said light trap means comprises surfaces which are light absorbing.
- 13. The turbidimeter in accordance with claim 1, further comprising base means; wherein said chamber means is detachable from said base means.
- 14. The turbidimeter in accordance with claim 13, wherein said light source means and said detector means are supported by said base means.
- 15. The turbidimeter in accordance with claim 14, wherein said inlet and outlet means comprise tubes which extend through, and are supported by, said base means.
- 16. A turbidimeter for measuring the turbidity of a liquid containing particles, comprising:
(a) chamber means having inlet and outlet means for liquid ingress into said chamber means and egress therefrom; (b) light source means for projecting a light beam into said chamber means; (c) detector means for detecting light scattered by said particles in said liquid in said chamber means; wherein said detector means has a field of view which intersects said light beam in said chamber means; and (d) light trap means for trapping said light beam and preventing said light beam from radiating to said detector means as stray light; wherein said light trap means comprises a light absorbing interior surface.
- 17. The turbidimeter in accordance with claim 16, wherein said chamber means includes an interior surface, and wherein said chamber means further comprises a flow diverter which defines a volume between said interior surface of said chamber means and said flow diverter.
- 18. The turbidimeter in accordance with claim 17, wherein said flow diverter directs flow of said liquid downwardly along said interior surface of said chamber means and then upwardly through said light trap means.
- 19. The turbidimeter in accordance with claim 16, further comprising base means; wherein said chamber means is detachable from said base means.
- 20. The turbidimeter in accordance with claim 16, wherein said light source further comprises a collimating lens for collimating said light beam; and wherein said detector means further comprises focus means for focusing said light scattered by said particles in said field of view.
- 21. A turbidimeter for measuring the turbidity of a liquid containing particles, comprising:
(a) chamber means having inlet and outlet means for liquid ingress into said chamber means and egress therefrom; (b) light source means for projecting a collimated light beam into said chamber means; (c) detector means for detecting light scattered by said particles in said liquid in said chamber means; wherein said detector means comprises focus means and has a field of view which intersects said light beam in said chamber means; (d) light trap means for trapping said light beam and preventing said light beam from radiating to said detector means as stray light; wherein said light trap means is tapered and comprises a light absorbing interior surface.
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application is based upon, and claims the benefit of, our Provisional Application No. 60/375,342, filed Apr. 23, 2002.
Provisional Applications (1)
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Number |
Date |
Country |
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60375342 |
Apr 2002 |
US |