US5046858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature reference junction for a multichannel temperature sensing system
Assignee: Schlumberger Technologies Ltd
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Filing: 1990-06-20
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Granted: 1991-09-10
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Expires: 2010-06-20
Abstract
Abstract A multi-channel remote-temperature-sensing system has a reference temperature assembly for the reference junctions of a plurality of temperature sensors for determining temperatures at remote points. The assembly comprises an array of components each adapted to make thermal contact with a reference junction of a remote-temperature-sensing thermocouple, an absolute reference thermometer situated within the array for measuring an absolute reference temperature, a thermocouple for sensing a temperature difference between the absolute reference thermometer and a component of the array, and data processing means for calculating the temperature of the component of the array from the absolute reference temperature and the temperature difference.
Inventors
- 👤 Roger L. R. Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:17
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/02; G01K7/10; G01K7/12; G01K7/13; G01K3/00; G01K3/08; G01K3/14
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
86 words
A reference temperature assembly for a multichannel remote temperature sensing data system comprising an array of components each adapted to make thermal contact with a reference junction of a remote-temperature-sensing thermocouple, an absolute reference thermometer situated within the array for measuring an absolute reference temperature, a thermocouple for sensing a temperature difference between the absolute reference thermometer and a component of the array, and data processing means for calculating the temperature of the component of the array from the absolute reference temperature and the temperature difference.
Claim 2
Dependent Claim
86 words
A reference temperature assembly for a multichannel remote temperature sensing data system comprising an array of components each adapted to make thermal contact with a reference junction of a remote-temperature-sensing thermocouple, an absolute reference thermometer situated within the array for measuring an absolute reference temperature, a thermocouple for sensing a temperature difference between the absolute reference thermometer and a component of the array, and data processing means for calculating the temperature of the component of the array from the absolute reference temperature and the temperature difference.
Claim 3
Dependent Claim
61 words
A reference temperature assembly according to claim 1 in which the thermocouple measures the temperature difference between the absolute reference thermometer and a predetermined component of the array remote from the absolute reference thermometer and comprising data processing means for using the absolute reference temperature and the measured temperature difference to interpolate the temperature of a further component of the array.
Claim 4
Dependent Claim
19 words
A reference temperature assembly according to claim 1 in which the absolute reference thermometer is a platinum resistance thermometer.
Claim 5
Dependent Claim
23 words
A reference temperature assembly according to claim 1 in which the absolute reference thermometer is situated substantially centrally in the array of components.
Claim 6
Dependent Claim
18 words
A reference temperature assembly according to claim 1 in which the array of components is a rectangular array.
Claim 7
Dependent Claim
29 words
A reference temperature assembly according to claim 5 in which the thermocouple measures the temperature difference between the absolute resistance thermometer and a component at a corner of the
Claim 8
Dependent Claim
20 words
A reference temperature assembly according to claim 1 in which the components of the array are 3 way terminal blocks.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-09 | 1995-03-11 | 1995-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-09 | 1999-03-11 | 1999-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-09 | 2003-03-11 | 2003-09-10 | $7700.00 | Window Closed / Lapsed |