A small-volume PVTX system for broadband spectroscopic calibration of downhole optical sensors
| Autor: | Jimmy W. Anders, Christopher Michael Jones, Jeffrey L. Moore, Jing Shen, Robert Atkinson, David L. Perkins, Michael T. Pelletier, Michael L. Myrick |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
010304 chemical physics business.industry Analytical chemistry 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Temperature measurement Pressure sensor law.invention Optics Pressure measurement Path length law 0103 physical sciences Calibration Physics::Chemical Physics 0210 nano-technology business Absorption (electromagnetic radiation) Instrumentation Ambient pressure Visible spectrum |
| Zdroj: | Review of Scientific Instruments. 88:073101 |
| ISSN: | 1089-7623 0034-6748 |
| Popis: | An instrument is presented that is capable of measuring the optical spectrum (long-wave ultraviolet through short-wave mid-infrared) of fluids under a range of temperature and pressure conditions from ambient pressure up to 138 MPa (20 000 psi) and 422 K (300 °F) using ∼5 ml of fluid. Temperature, pressure, and density are measured in situ in real-time, and composition is varied by adding volatile and nonvolatile components. The stability and accuracy of the conditions are reported for pure ethane, and the effects of temperature and pressure on characteristic regions of the optical spectrum of ethane are illustrated after correction for temperature and pressure effects on the optical cell path length, as well as normalization to the measured density. Molar absorption coefficients and integrated molar absorption coefficients for several vibrational combination bands are presented. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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