EP0126600A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Optical fibre probe
Assignee: Elf Exploration UK Ltd
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Filing: 1984-05-11
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Granted: —
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Expires: 2004-05-11
Abstract
Abstract A probe 1 comprises a sensor portion 5 having an outer porous hydrophobic membrane 8 (e.g. PTFE) and, within the sensor portion 5, a material 9 comprised of a hydrophobic resin (e.g. cross-linked polystyrene) on which is immobilised a compound having spectral characteristics sensitive to a change to be monitored by the probe. Optical fibre cable 2 transmits light from a source to the compound and back to a detector. A change in the parameter being monitored by the probe results in a spectral change in the compound which is detected by the detector.
Inventors
- 👤 Gordon Frank Kirkbright
- 👤 Neal Arthur Welti
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 14:43
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/75; G01N21/77; G01N21/7703
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
69 words
A probe comgrising a sensor portion having an outer porous hydrophobic membrane and, within the sensor portion, a hydrophobic resin on which is immobilised a compound having spectral characteristics sensitive to a change to be monitored by the probe, and optical fibre means for transmitting light to said compound and for transmitting light from said compound and for transmitting light from said compound to detect any spectral change therein.
Claim 2
Dependent Claim
69 words
A probe comgrising a sensor portion having an outer porous hydrophobic membrane and, within the sensor portion, a hydrophobic resin on which is immobilised a compound having spectral characteristics sensitive to a change to be monitored by the probe, and optical fibre means for transmitting light to said compound and for transmitting light from said compound and for transmitting light from said compound to detect any spectral change therein.
Claim 3
Dependent Claim
18 words
A probe as claimed in claim 1 wherein the sensor is provided as a tip for the probe.
Claim 4
Dependent Claim
20 words
A probe as claimed in claim 2 wherein the porous membrane forms a projection at the end of the tip.
Claim 5
Dependent Claim
27 words
A probe as claimed in any one of claims 1 to 3 wherein the optical fibre means are in intimate contact with the resin and immobilised compound.
Claim 6
Dependent Claim
18 words
A probe as claimed in any one of claims 1 to 4 wherein the membrane is of polytetrafluoroethylene.
Claim 7
Dependent Claim
20 words
A probe as claimed in any one of claims 1 to 5 wherein the resin is used in powdered form.
Claim 8
Dependent Claim
20 words
A probe as claimed in any one of claims 1 to 6 wherein the hydrophobic resin is a cross-linked polystyrene.
Claim 9
Dependent Claim
16 words
A probe"as claimed in claim 7 wherein the resin has substantially no chemically active functional groups.
Claim 10
Dependent Claim
17 words
A probe as claimed in claim 7 or 8 wherein the polystyrene is cross-linked with divinyl benzene.
Claim 11
Dependent Claim
20 words
A probe as claimed in any one of claims 1 to 9 wherein the immobilised compound is a colorimetric reagent.
Claim 12
Dependent Claim
14 words
A probe as claimed in claim 10 wherein the immobilised compound is Bromothymol Blue.
References Cited (Backward Citations)
No citation records indexed.
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