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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
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.
5e62fbb2-313b-4368-a371-2d8cb7978109
Dakin, J.P.
490d5873-c444-423b-8d83-c49f118dc4b5
Austin, E.A.
5e62fbb2-313b-4368-a371-2d8cb7978109
Dakin, J.P.
490d5873-c444-423b-8d83-c49f118dc4b5

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. 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.

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More information

Published date: 2000
Additional Information: TH7-3 (Postdeadline)
Venue - Dates: OFS 2000, 2000-10-11 - 2000-10-13

Identifiers

Local EPrints ID: 16907
URI: https://eprints.soton.ac.uk/id/eprint/16907
PURE UUID: 5bf2f2c1-9de2-48b6-b85b-2fb1f170dd69

Catalogue record

Date deposited: 17 Aug 2005
Last modified: 17 Jul 2017 16:43

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