GB702510A - Improvements in temperature responsive instruments - Google Patents
Improvements in temperature responsive instrumentsInfo
- Publication number
- GB702510A GB702510A GB6878/52A GB687852A GB702510A GB 702510 A GB702510 A GB 702510A GB 6878/52 A GB6878/52 A GB 6878/52A GB 687852 A GB687852 A GB 687852A GB 702510 A GB702510 A GB 702510A
- Authority
- GB
- United Kingdom
- Prior art keywords
- potential
- temperature
- thermocouple
- standard cell
- variable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
- G01K7/021—Particular circuit arrangements
Abstract
702,510. Electric indicating systems. FOXBORO CO. March 17, 1952 [March 24, 1951], No. 6878/52. Class 40 (1). Apparatus responsive to variable temperature comprising a first thermocouple unit providing a potential varying with temperature, a potential comparison circuit including a standard cell fixed potential providing a reference potential for comparison with the temperative variable potential, and a second thermocouple unit located in a temperature ambiency to which the first thermocouple is wholly or partly responsive which operates to vary .the reference potential in compensation for nonlinearity between the potential of the first thermocouple unit and the temperature to which it is responsive; part at least of the potential of the second thermocouple unit being applied to the standard cell in a totalling action with respect to the potential of the standard cell. In a temperature measuring apparatus the resultant voltage of two differential thermocouples 12, 13 measuring the temperatures in chambers 10, 11 is applied through a filter 15 to a nullbalance detector-amplifier circuit 16, 18, 19 (which may be of the kind described in Specifications 655,359 and 656,074) for comparison with a standard cell 17, to produce amplified unbalance voltages. The latter energise solenoids 20, 21 whose differentially arranged plungers 23, 24 are mechanically coupled to adjust a variable capacitor 22 rebalancing the measuring circuit 16, and deflect the pen 27 of a chart 28 through a linkage 29 to record the differential temperature between the chambers. The scale of the instrument is linearized relatively to the differential temperature by injecting in series with the standard cell a variable correcting voltage derived from a voltage divider 31 across a third thermocouple 30 in the chamber 11. In a modification the temperature indications derived from a single thermocouple may be linearised by injecting a portion of the voltage from a further thermocouple in the same enclosure into the standard cell circuit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US702510XA | 1951-03-24 | 1951-03-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB702510A true GB702510A (en) | 1954-01-20 |
Family
ID=22094127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6878/52A Expired GB702510A (en) | 1951-03-24 | 1952-03-17 | Improvements in temperature responsive instruments |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB702510A (en) |
Cited By (62)
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|---|---|---|---|---|
| WO2005050151A1 (en) * | 2003-10-23 | 2005-06-02 | Sherwood Services Ag | Thermocouple measurement circuit |
| US7651492B2 (en) | 2006-04-24 | 2010-01-26 | Covidien Ag | Arc based adaptive control system for an electrosurgical unit |
| US7766693B2 (en) | 2003-11-20 | 2010-08-03 | Covidien Ag | Connector systems for electrosurgical generator |
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| US7901400B2 (en) | 1998-10-23 | 2011-03-08 | Covidien Ag | Method and system for controlling output of RF medical generator |
| US7927328B2 (en) | 2006-01-24 | 2011-04-19 | Covidien Ag | System and method for closed loop monitoring of monopolar electrosurgical apparatus |
| US7947039B2 (en) | 2005-12-12 | 2011-05-24 | Covidien Ag | Laparoscopic apparatus for performing electrosurgical procedures |
| US7956620B2 (en) | 2009-08-12 | 2011-06-07 | Tyco Healthcare Group Lp | System and method for augmented impedance sensing |
| US7972332B2 (en) | 2006-03-03 | 2011-07-05 | Covidien Ag | System and method for controlling electrosurgical snares |
| US7972328B2 (en) | 2006-01-24 | 2011-07-05 | Covidien Ag | System and method for tissue sealing |
| US8025660B2 (en) | 2004-10-13 | 2011-09-27 | Covidien Ag | Universal foot switch contact port |
| US8080008B2 (en) | 2003-05-01 | 2011-12-20 | Covidien Ag | Method and system for programming and controlling an electrosurgical generator system |
| US8096961B2 (en) | 2003-10-30 | 2012-01-17 | Covidien Ag | Switched resonant ultrasonic power amplifier system |
| US8105323B2 (en) | 1998-10-23 | 2012-01-31 | Covidien Ag | Method and system for controlling output of RF medical generator |
| US8147485B2 (en) | 2006-01-24 | 2012-04-03 | Covidien Ag | System and method for tissue sealing |
| US8152802B2 (en) | 2009-01-12 | 2012-04-10 | Tyco Healthcare Group Lp | Energy delivery algorithm filter pre-loading |
| US8162932B2 (en) | 2009-01-12 | 2012-04-24 | Tyco Healthcare Group Lp | Energy delivery algorithm impedance trend adaptation |
| US8167875B2 (en) | 2009-01-12 | 2012-05-01 | Tyco Healthcare Group Lp | Energy delivery algorithm for medical devices |
| US8174267B2 (en) | 2008-09-30 | 2012-05-08 | Vivant Medical, Inc. | Intermittent microwave energy delivery system |
| US8180433B2 (en) | 2008-09-30 | 2012-05-15 | Vivant Medical, Inc. | Microwave system calibration apparatus, system and method of use |
| US8187262B2 (en) | 2006-01-24 | 2012-05-29 | Covidien Ag | Dual synchro-resonant electrosurgical apparatus with bi-directional magnetic coupling |
| US8211100B2 (en) | 2009-01-12 | 2012-07-03 | Tyco Healthcare Group Lp | Energy delivery algorithm for medical devices based on maintaining a fixed position on a tissue electrical conductivity v. temperature curve |
| US8216223B2 (en) | 2006-01-24 | 2012-07-10 | Covidien Ag | System and method for tissue sealing |
| US8216220B2 (en) | 2007-09-07 | 2012-07-10 | Tyco Healthcare Group Lp | System and method for transmission of combined data stream |
| US8226639B2 (en) | 2008-06-10 | 2012-07-24 | Tyco Healthcare Group Lp | System and method for output control of electrosurgical generator |
| US8231553B2 (en) | 2009-01-13 | 2012-07-31 | Tyco Healthcare Group Lp | Method for wireless control of electrosurgery |
| US8231616B2 (en) | 2006-09-28 | 2012-07-31 | Covidien Ag | Transformer for RF voltage sensing |
| US8235917B2 (en) | 2009-01-13 | 2012-08-07 | Tyco Healthcare Group Lp | Wireless electrosurgical controller |
| US8242782B2 (en) | 2008-09-30 | 2012-08-14 | Vivant Medical, Inc. | Microwave ablation generator control system |
| US8248075B2 (en) | 2008-09-30 | 2012-08-21 | Vivant Medical, Inc. | System, apparatus and method for dissipating standing wave in a microwave delivery system |
| US8257349B2 (en) | 2008-03-28 | 2012-09-04 | Tyco Healthcare Group Lp | Electrosurgical apparatus with predictive RF source control |
| US8262652B2 (en) | 2009-01-12 | 2012-09-11 | Tyco Healthcare Group Lp | Imaginary impedance process monitoring and intelligent shut-off |
| US8287527B2 (en) | 2008-09-30 | 2012-10-16 | Vivant Medical, Inc. | Microwave system calibration apparatus and method of use |
| US8287529B2 (en) | 2008-09-05 | 2012-10-16 | Tyco Healthcare Group Lp | Electrosurgical apparatus with high speed energy recovery |
| US8287528B2 (en) | 1998-10-23 | 2012-10-16 | Covidien Ag | Vessel sealing system |
| US8298231B2 (en) | 2008-01-31 | 2012-10-30 | Tyco Healthcare Group Lp | Bipolar scissors for adenoid and tonsil removal |
| US8333759B2 (en) | 2009-01-12 | 2012-12-18 | Covidien Lp | Energy delivery algorithm for medical devices |
| US8346370B2 (en) | 2008-09-30 | 2013-01-01 | Vivant Medical, Inc. | Delivered energy generator for microwave ablation |
| US8377053B2 (en) | 2008-09-05 | 2013-02-19 | Covidien Lp | Electrosurgical apparatus with high speed energy recovery |
| US8403924B2 (en) | 2008-09-03 | 2013-03-26 | Vivant Medical, Inc. | Shielding for an isolation apparatus used in a microwave generator |
| US8409186B2 (en) | 2008-03-13 | 2013-04-02 | Covidien Lp | Crest factor enhancement in electrosurgical generators |
| US8512332B2 (en) | 2007-09-21 | 2013-08-20 | Covidien Lp | Real-time arc control in electrosurgical generators |
| US8523855B2 (en) | 2002-12-10 | 2013-09-03 | Covidien Ag | Circuit for controlling arc energy from an electrosurgical generator |
| US8663214B2 (en) | 2006-01-24 | 2014-03-04 | Covidien Ag | Method and system for controlling an output of a radio-frequency medical generator having an impedance based control algorithm |
| US8685016B2 (en) | 2006-01-24 | 2014-04-01 | Covidien Ag | System and method for tissue sealing |
| US8734438B2 (en) | 2005-10-21 | 2014-05-27 | Covidien Ag | Circuit and method for reducing stored energy in an electrosurgical generator |
| US8734444B2 (en) | 2008-10-10 | 2014-05-27 | Covidien Lp | System and method for delivering high current to electrosurgical device |
| US8777941B2 (en) | 2007-05-10 | 2014-07-15 | Covidien Lp | Adjustable impedance electrosurgical electrodes |
| US8808161B2 (en) | 2003-10-23 | 2014-08-19 | Covidien Ag | Redundant temperature monitoring in electrosurgical systems for safety mitigation |
| US8852179B2 (en) | 2008-10-10 | 2014-10-07 | Covidien Lp | Apparatus, system and method for monitoring tissue during an electrosurgical procedure |
| US8932282B2 (en) | 2009-08-03 | 2015-01-13 | Covidien Lp | Power level transitioning in a surgical instrument |
| US9186200B2 (en) | 2006-01-24 | 2015-11-17 | Covidien Ag | System and method for tissue sealing |
| US9270202B2 (en) | 2013-03-11 | 2016-02-23 | Covidien Lp | Constant power inverter with crest factor control |
| US9474564B2 (en) | 2005-03-31 | 2016-10-25 | Covidien Ag | Method and system for compensating for external impedance of an energy carrying component when controlling an electrosurgical generator |
| US9522039B2 (en) | 2009-03-11 | 2016-12-20 | Covidien Lp | Crest factor enhancement in electrosurgical generators |
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-
1952
- 1952-03-17 GB GB6878/52A patent/GB702510A/en not_active Expired
Cited By (102)
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|---|---|---|---|---|
| US8105323B2 (en) | 1998-10-23 | 2012-01-31 | Covidien Ag | Method and system for controlling output of RF medical generator |
| US9168089B2 (en) | 1998-10-23 | 2015-10-27 | Covidien Ag | Method and system for controlling output of RF medical generator |
| US9113900B2 (en) | 1998-10-23 | 2015-08-25 | Covidien Ag | Method and system for controlling output of RF medical generator |
| US7901400B2 (en) | 1998-10-23 | 2011-03-08 | Covidien Ag | Method and system for controlling output of RF medical generator |
| US8287528B2 (en) | 1998-10-23 | 2012-10-16 | Covidien Ag | Vessel sealing system |
| US8523855B2 (en) | 2002-12-10 | 2013-09-03 | Covidien Ag | Circuit for controlling arc energy from an electrosurgical generator |
| US8298223B2 (en) | 2003-05-01 | 2012-10-30 | Covidien Ag | Method and system for programming and controlling an electrosurgical generator system |
| US8267929B2 (en) | 2003-05-01 | 2012-09-18 | Covidien Ag | Method and system for programming and controlling an electrosurgical generator system |
| US8303580B2 (en) | 2003-05-01 | 2012-11-06 | Covidien Ag | Method and system for programming and controlling an electrosurgical generator system |
| US8080008B2 (en) | 2003-05-01 | 2011-12-20 | Covidien Ag | Method and system for programming and controlling an electrosurgical generator system |
| US8808161B2 (en) | 2003-10-23 | 2014-08-19 | Covidien Ag | Redundant temperature monitoring in electrosurgical systems for safety mitigation |
| US8647340B2 (en) | 2003-10-23 | 2014-02-11 | Covidien Ag | Thermocouple measurement system |
| WO2005050151A1 (en) * | 2003-10-23 | 2005-06-02 | Sherwood Services Ag | Thermocouple measurement circuit |
| US8104956B2 (en) | 2003-10-23 | 2012-01-31 | Covidien Ag | Thermocouple measurement circuit |
| US8485993B2 (en) | 2003-10-30 | 2013-07-16 | Covidien Ag | Switched resonant ultrasonic power amplifier system |
| US8096961B2 (en) | 2003-10-30 | 2012-01-17 | Covidien Ag | Switched resonant ultrasonic power amplifier system |
| US8113057B2 (en) | 2003-10-30 | 2012-02-14 | Covidien Ag | Switched resonant ultrasonic power amplifier system |
| US9768373B2 (en) | 2003-10-30 | 2017-09-19 | Covidien Ag | Switched resonant ultrasonic power amplifier system |
| US8966981B2 (en) | 2003-10-30 | 2015-03-03 | Covidien Ag | Switched resonant ultrasonic power amplifier system |
| US7766693B2 (en) | 2003-11-20 | 2010-08-03 | Covidien Ag | Connector systems for electrosurgical generator |
| US8025660B2 (en) | 2004-10-13 | 2011-09-27 | Covidien Ag | Universal foot switch contact port |
| US11013548B2 (en) | 2005-03-31 | 2021-05-25 | Covidien Ag | Method and system for compensating for external impedance of energy carrying component when controlling electrosurgical generator |
| US9474564B2 (en) | 2005-03-31 | 2016-10-25 | Covidien Ag | Method and system for compensating for external impedance of an energy carrying component when controlling an electrosurgical generator |
| US8734438B2 (en) | 2005-10-21 | 2014-05-27 | Covidien Ag | Circuit and method for reducing stored energy in an electrosurgical generator |
| US9522032B2 (en) | 2005-10-21 | 2016-12-20 | Covidien Ag | Circuit and method for reducing stored energy in an electrosurgical generator |
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| US8267928B2 (en) | 2006-01-24 | 2012-09-18 | Covidien Ag | System and method for closed loop monitoring of monopolar electrosurgical apparatus |
| US8685016B2 (en) | 2006-01-24 | 2014-04-01 | Covidien Ag | System and method for tissue sealing |
| US8475447B2 (en) | 2006-01-24 | 2013-07-02 | Covidien Ag | System and method for closed loop monitoring of monopolar electrosurgical apparatus |
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| US8216223B2 (en) | 2006-01-24 | 2012-07-10 | Covidien Ag | System and method for tissue sealing |
| US7972328B2 (en) | 2006-01-24 | 2011-07-05 | Covidien Ag | System and method for tissue sealing |
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| US9186200B2 (en) | 2006-01-24 | 2015-11-17 | Covidien Ag | System and method for tissue sealing |
| US9642665B2 (en) | 2006-01-24 | 2017-05-09 | Covidien Ag | Method and system for controlling an output of a radio-frequency medical generator having an impedance based control algorithm |
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| US8147485B2 (en) | 2006-01-24 | 2012-04-03 | Covidien Ag | System and method for tissue sealing |
| US7972332B2 (en) | 2006-03-03 | 2011-07-05 | Covidien Ag | System and method for controlling electrosurgical snares |
| US7651492B2 (en) | 2006-04-24 | 2010-01-26 | Covidien Ag | Arc based adaptive control system for an electrosurgical unit |
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| US9636165B2 (en) | 2013-07-29 | 2017-05-02 | Covidien Lp | Systems and methods for measuring tissue impedance through an electrosurgical cable |
| US11006997B2 (en) | 2016-08-09 | 2021-05-18 | Covidien Lp | Ultrasonic and radiofrequency energy production and control from a single power converter |
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