| US 7,526,397 B2 | ||
| Methods and apparatus for calibrating distributed fiber temperature sensing system | ||
| Kent Kalar, Austin, Tex. (US); Michael E. Sanders, Austin, Tex. (US); Chung Lee, College Station, Tex. (US); Brian Park, Austin, Tex. (US); and Mohammed Fassih-Nia, Austin, Tex. (US) | ||
| Assigned to SensorTran, Inc., Austin, Tex. (US) | ||
| Filed on Mar. 13, 2007, as Appl. No. 11/685,628. | ||
| Claims priority of provisional application 60/791158, filed on Apr. 11, 2006. | ||
| Claims priority of provisional application 60/888444, filed on Feb. 06, 2007. | ||
| Prior Publication US 2008/0040062 A1, Feb. 14, 2008 | ||
| Int. Cl. G01K 15/00 (2006.01) | ||
| U.S. Cl. 702—99 | 10 Claims |
| 1. A remote temperature calibration apparatus for use in calibration of a distributed fiber optic temperature measurement
system comprising:
a. a first reference cell coupled to a first temperature control system configured to attain a first reference cell temperature;
b. a second reference cell coupled to a second temperature control system and to said first reference cell and configured
to attain a second reference cell temperature, the first and second reference cell temperatures being different;
c. wherein said first and second reference cells are configured to be inserted into and removed from an enclosure housing
the first and second reference cells;
d. wherein said first and second reference cells are configured to allow a fiber optic sensing cable, without being cut, to
be wrapped around the first and second reference cells while said first and second reference cells are removed from the enclosure;
and
e. wherein said enclosure housing said first and second reference cells is located remote from said distributed fiber optic
temperature measurement system.
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