CA2228333A1 - Thermoelectric product and method - Google Patents

Thermoelectric product and method

Info

Publication number
CA2228333A1
CA2228333A1 CA002228333A CA2228333A CA2228333A1 CA 2228333 A1 CA2228333 A1 CA 2228333A1 CA 002228333 A CA002228333 A CA 002228333A CA 2228333 A CA2228333 A CA 2228333A CA 2228333 A1 CA2228333 A1 CA 2228333A1
Authority
CA
Canada
Prior art keywords
circuit
output
thermocouple
voltage
analog
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.)
Granted
Application number
CA002228333A
Other languages
French (fr)
Other versions
CA2228333C (en
Inventor
Milton Bernard Hollander
William Earl Mckinley
Michael A. Macchiarelli Jr.
Shahin Baghai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Omega Engineering Inc
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2228333A1 publication Critical patent/CA2228333A1/en
Application granted granted Critical
Publication of CA2228333C publication Critical patent/CA2228333C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G01K7/10—Arrangements for compensating for auxiliary variables, e.g. length of lead
    • G01K7/12—Arrangements with respect to the cold junction, e.g. preventing influence of temperature of surrounding air
    • G01K7/13—Circuits for cold-junction compensation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/02—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for altering or correcting the law of variation
    • G01D3/022—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for altering or correcting the law of variation having an ideal characteristic, map or correction data stored in a digital memory

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Technology Law (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Control Of Temperature (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Packaging For Recording Disks (AREA)

Abstract

A thermoelectric cold junction compensator connector module, for use with a thermoelectric device such as a thermistor, thermocouple, or resistance-temperature device, has within a housing a cold junction compensator circuit which has means for linearization of voltage output of the circuit relative to input to the circuit. Preferably the circuit also includes potentiometer means for adjustment of at least one parameter of the circuit, and means for adjustment of its voltage output to correspond to degrees Centigrade and degrees Fahrenheit.
In a preferred form there are included within the housing a pair of input terminals shielded by ferrite material against stray electromagnetic induction signals, a printed circuit board which comprises a cold junction compensation circuit, a signal linearization circuit, a converter/amplifier circuit, and a circuit for selectively providing a degree Centigrade and degree Fahrenheit output, a battery power supply, and a battery status indicator with means for bringing it into and out of operation, a plurality of potentiometers for preliminary setting up of the circuits, an on-off switching means for the powered circuits, and output terminal means for connection to, for example, a voltmeter or a voltage recording device. The compact body may have a base portion on which the circuits and other items are mounted, and one or more removable cover portions securable on the base portion. Further, a thermocouple voltage-to-analog connector is in the form of a compact hand-held module which contains all the components and power supplies for converting an input of thermocouple output voltage to a linear and cold-junction-compensated analog output. A particularly advantageous feature is that an on-board analog-to-digital converter only calculates and provides the linearity correction, necessary for the specific thermocouple at a specific temperature, in the form of a pulse width modulation signal output, so that about 95 % of the analog output is derived from the output of a thermocouple amplifier and temperature sensor, and only 5 % of the remaining signal is derived from the on-board micro-processor.
CA002228333A 1997-01-31 1998-01-29 Thermoelectric product and method Expired - Fee Related CA2228333C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US3662497P 1997-01-31 1997-01-31
US60/036,624 1997-01-31
US5350797P 1997-07-23 1997-07-23
US60/053,507 1997-07-23

Publications (2)

Publication Number Publication Date
CA2228333A1 true CA2228333A1 (en) 1998-07-31
CA2228333C CA2228333C (en) 2002-08-06

Family

ID=26713338

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002228333A Expired - Fee Related CA2228333C (en) 1997-01-31 1998-01-29 Thermoelectric product and method

Country Status (8)

Country Link
US (1) US6074089A (en)
CA (1) CA2228333C (en)
DE (1) DE19803351A1 (en)
FR (1) FR2762908B1 (en)
GB (1) GB2321712B (en)
IL (1) IL123052A (en)
IT (1) ITVI980012A1 (en)
NL (1) NL1008153C2 (en)

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US8734438B2 (en) 2005-10-21 2014-05-27 Covidien Ag Circuit and method for reducing stored energy in an electrosurgical generator
US7947039B2 (en) 2005-12-12 2011-05-24 Covidien Ag Laparoscopic apparatus for performing electrosurgical procedures
US8147485B2 (en) 2006-01-24 2012-04-03 Covidien Ag System and method for tissue sealing
US7513896B2 (en) 2006-01-24 2009-04-07 Covidien Ag Dual synchro-resonant electrosurgical apparatus with bi-directional magnetic coupling
US8685016B2 (en) 2006-01-24 2014-04-01 Covidien Ag System and method for tissue sealing
CA2574934C (en) 2006-01-24 2015-12-29 Sherwood Services Ag System and method for closed loop monitoring of monopolar electrosurgical apparatus
US9186200B2 (en) 2006-01-24 2015-11-17 Covidien Ag System and method for tissue sealing
US8216223B2 (en) 2006-01-24 2012-07-10 Covidien Ag System and method for tissue sealing
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US7651493B2 (en) 2006-03-03 2010-01-26 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
US7794457B2 (en) 2006-09-28 2010-09-14 Covidien Ag Transformer for RF voltage sensing
CN101206488B (en) * 2006-12-20 2010-12-22 台达电子工业股份有限公司 Cold-end compensation process for temperature control module
US8777941B2 (en) 2007-05-10 2014-07-15 Covidien Lp Adjustable impedance electrosurgical electrodes
US7834484B2 (en) 2007-07-16 2010-11-16 Tyco Healthcare Group Lp Connection cable and method for activating a voltage-controlled generator
US8216220B2 (en) 2007-09-07 2012-07-10 Tyco Healthcare Group Lp System and method for transmission of combined data stream
US8512332B2 (en) 2007-09-21 2013-08-20 Covidien Lp Real-time arc control in electrosurgical generators
US8702306B2 (en) * 2007-09-21 2014-04-22 Siemens Industry, Inc. Systems, devices, and/or methods for managing a thermocouple module
US8226639B2 (en) 2008-06-10 2012-07-24 Tyco Healthcare Group Lp System and method for output control of electrosurgical generator
US8262652B2 (en) 2009-01-12 2012-09-11 Tyco Healthcare Group Lp Imaginary impedance process monitoring and intelligent shut-off
US20110094556A1 (en) * 2009-10-25 2011-04-28 Digital Angel Corporation Planar thermoelectric generator
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US20120236904A1 (en) * 2011-03-14 2012-09-20 Brian Mark Burmaster Direct thermocouple measurement without a reference junction
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US8974117B2 (en) * 2012-04-04 2015-03-10 Honeywell International Inc. Pulse width modulation output digital temperature sensor device
US20150021465A1 (en) 2013-07-16 2015-01-22 Leeo, Inc. Electronic device with environmental monitoring
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Also Published As

Publication number Publication date
GB9801937D0 (en) 1998-03-25
IL123052A (en) 2001-03-19
ITVI980012A1 (en) 1999-07-29
FR2762908B1 (en) 1999-12-03
ITVI980012A0 (en) 1998-01-29
GB2321712B (en) 2001-07-18
CA2228333C (en) 2002-08-06
IL123052A0 (en) 1998-09-24
FR2762908A1 (en) 1998-11-06
US6074089A (en) 2000-06-13
GB2321712A (en) 1998-08-05
DE19803351A1 (en) 1998-08-06
NL1008153C2 (en) 1998-08-18

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Legal Events

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EEER Examination request
MKLA Lapsed

Effective date: 20160129