B6.1 - Optical Sensors for Harsh Environments
- Event
- SENSOR+TEST Conferences 2009
2009-05-26 - 2009-05-28
Congress Center Nürnberg - Band
- Proceedings SENSOR 2009, Volume II
- Chapter
- B6 - Optical Sensors
- Author(s)
- A. Harpin - Oxsensis Ltd, Didcot, Great Britain
- Pages
- 89 - 94
- DOI
- 10.5162/sensor09/v2/b6.1
- ISBN
- 978-3-9810993-5-5
- Price
- free
Abstract
Oxsensis produces a range of High temperature pressure sensors for use in Gas turbine and Jet engine monitoring and diagnostics. Such sensors are able to withstand higher temperatures than electronic sensors and can deliver both static and dynamic pressure measurements and we collaborate with a number of manufacturers in this area.
These sensors have been described elsewhere [1][2]and it is not the purpose of this paper to describe them further, but we have mentioned them as we have applied the same technology to temperature sensing in response to interest from the Gas turbine community.
Initially the desire to measure temperature came from the need to maintain the calibration over temperature of our pressure sensors. Initially this was estimated from the expected temperature of the engine and used to give a limit on accuracy of the static pressure reading. We will describe the limitations of this approach and the benefit of measuring the temperature of the sensor whilst it is measuring pressure. We will describe an interrogation scheme to measure multiple parameters in an optical sensor and present some simulated and actual results.
Further interest lead to the development of temperature sensors to read the temperature of the gas flow they are in. We will describe some developments we have made in this direction.