| US 7,495,763 B2 | ||
| Dual function measurement system | ||
| Perry A. Palumbo, Fort Collins, Colo. (US) | ||
| Assigned to Hach Company, Loveland, Colo. (US) | ||
| Filed on Dec. 11, 2006, as Appl. No. 11/609,211. | ||
| Claims priority of provisional application 60/785074, filed on Mar. 23, 2006. | ||
| Prior Publication US 2007/0222985 A1, Sep. 27, 2007 | ||
| Int. Cl. G01N 21/00 (2006.01); G01J 1/04 (2006.01) | ||
| U.S. Cl. 356—337 [356/338; 356/343; 356/236] | 14 Claims |
| 1. A dual function measurement system comprising:
a light source directed along a first axis and configured to illuminate a sample volume;
a first sensor aligned along a second axis and configured to detect scattered light in the sample volume;
a second sensor configured to detect a light amount, from the light source passing through and substantially unscattered by
the sample volume;
an integration sphere including an entrance port and an exit port, where the entrance port of the integration sphere is substantially
aligned with the first axis and the second sensor is substantially aligned with the exit port and where the entrance port
is aligned substantially 90 degrees with respect to the exit port; and
a transmit detector mounted to the exit port of the integration sphere.
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