Simultaneous sensing of dissolved oxygen and probe temperature using a ruby insert and compact photon counting receiver
Simultaneous sensing of dissolved oxygen and probe temperature using a ruby insert and compact photon counting receiver
We present a new sensor capable of real-time simultaneous determination of dissolved oxygen and temperature sensor. The measurements are achieved by essentially simultaneous interrogation of fluorescence lifetime of both an oxygen sensing Ru2+ pO2 sensor membrane impregnated in silicone, and a Cr3+-doped sapphire crystal (Ruby). The presence of the ruby crystal provides several advantages
1. It acts as a thermal sensor at the probe tip, that is illuminated by the same LED as the Ru2+ sensing layer.
2. As the ruby crystal is mounted at the distal end of the optical fibre probe, it provides a reference signal to indicate mechanical damage or membrane detachment problems.
3. By providing a reasonably constant fluorescence intensity, more significant, yet gradual changes in fluorescence light output from the membrane (e.g. due to photo-degradation) may be detected.
Austin, E.A.
49244605-390e-4a67-a184-58434ba30e7c
Dakin, J.P.
04891b9b-5fb5-4245-879e-9e7361adf904
2000
Austin, E.A.
49244605-390e-4a67-a184-58434ba30e7c
Dakin, J.P.
04891b9b-5fb5-4245-879e-9e7361adf904
Austin, E.A. and Dakin, J.P.
(2000)
Simultaneous sensing of dissolved oxygen and probe temperature using a ruby insert and compact photon counting receiver.
OFS 2000, Venice, Italy.
11 - 13 Oct 2000.
Record type:
Conference or Workshop Item
(Paper)
Abstract
We present a new sensor capable of real-time simultaneous determination of dissolved oxygen and temperature sensor. The measurements are achieved by essentially simultaneous interrogation of fluorescence lifetime of both an oxygen sensing Ru2+ pO2 sensor membrane impregnated in silicone, and a Cr3+-doped sapphire crystal (Ruby). The presence of the ruby crystal provides several advantages
1. It acts as a thermal sensor at the probe tip, that is illuminated by the same LED as the Ru2+ sensing layer.
2. As the ruby crystal is mounted at the distal end of the optical fibre probe, it provides a reference signal to indicate mechanical damage or membrane detachment problems.
3. By providing a reasonably constant fluorescence intensity, more significant, yet gradual changes in fluorescence light output from the membrane (e.g. due to photo-degradation) may be detected.
More information
Published date: 2000
Additional Information:
TH7-3 (Postdeadline)
Venue - Dates:
OFS 2000, Venice, Italy, 2000-10-11 - 2000-10-13
Identifiers
Local EPrints ID: 16907
URI: http://eprints.soton.ac.uk/id/eprint/16907
PURE UUID: 5bf2f2c1-9de2-48b6-b85b-2fb1f170dd69
Catalogue record
Date deposited: 17 Aug 2005
Last modified: 15 Mar 2024 05:47
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Contributors
Author:
E.A. Austin
Author:
J.P. Dakin
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