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Class Information
Number: 374/181
Name: Thermal measuring and testing > Temperature measurement (e.g., thermometer) > By electrical or magnetic heat sensor > By thermoelectric potential generator (e.g., thermocouple) > Reference junction compensation
Description: Subject matter having a reference junction complementary to the measuring junction, and an arrangement to modify the output signal to eliminate the effect of temperature variation on the reference junction.


Patents under this class:
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Patent Number Title Of Patent Date Issued
7144155 Method, system and apparatus for measuring temperature with cold junction compensation Dec. 5, 2006
6888397 Temperature sensor circuit, semiconductor integrated circuit, and method of adjusting the temperature sensor circuit May. 3, 2005
6565254 Infrared sensing element and temperature measuring device May. 20, 2003
6425687 Cold junction compensation for multiple thermocouples Jul. 30, 2002
6293700 Calibrated isothermal assembly for a thermocouple thermometer Sep. 25, 2001
6203194 Thermopile sensor for radiation thermometer or motion detector Mar. 20, 2001
6158885 Thermocouple-to-extension wire ambient temperature error correction device Dec. 12, 2000
6074089 Thermoelectric product and method Jun. 13, 2000
6072165 Thin film metal/metal oxide thermocouple Jun. 6, 2000
5998767 Apparatus for processing a substrate wafer and method for operating same Dec. 7, 1999
5887978 Self-verifying temperature sensor Mar. 30, 1999
5803604 Thermocouple transmitter Sep. 8, 1998
5713668 Self-verifying temperature sensor Feb. 3, 1998
5484206 Method and apparatus for sensing a cold junction temperature Jan. 16, 1996
5328264 Compensation device for the cold junction of a thermocouple Jul. 12, 1994
5246293 Reference junction for thermocouple measuring Sep. 21, 1993
5167519 Temperature compensating universal connector Dec. 1, 1992
5163755 Temperature regulator Nov. 17, 1992
5161893 Temperature measurement Nov. 10, 1992
5088835 Reusable probe connector apparatus Feb. 18, 1992
5056929 Temperature compensation type infrared sensor Oct. 15, 1991
5046858 Temperature reference junction for a multichannel temperature sensing system Sep. 10, 1991
5038303 Method and apparatus for measuring temperature using thermocouple Aug. 6, 1991
4936690 Thermocouple transmitter with cold junction compensation Jun. 26, 1990
4924212 Temperature threshold detection circuit May. 8, 1990
4863283 Thermocouple connector Sep. 5, 1989
4804272 Cold junction compensation apparatus Feb. 14, 1989
4776706 Universal connector and compensating terminal apparatus for temperature responsive instruments Oct. 11, 1988
4718777 Isothermal block for temperature measurement system using a thermocouple Jan. 12, 1988
4682898 Method and apparatus for measuring a varying parameter Jul. 28, 1987
4673300 Calibrated probe for temperature measuring Jun. 16, 1987
4659910 AC-DC transfer standard temperature sensor reversal error compensation circuit Apr. 21, 1987
4624582 Multi-wire mineral insulated cable thermocouple reference junction Nov. 25, 1986
4623266 Cold junction compensation for thermocouple Nov. 18, 1986
4588308 Temperature measuring device with thermocouple May. 13, 1986
4575806 Precision temperature measuring system Mar. 11, 1986
4537516 Electronic thermometer Aug. 27, 1985
4488824 Method and apparatus for precision temperature measurement Dec. 18, 1984
4482261 Method for simultaneous reference junction compensation of a plurality of thermocouples Nov. 13, 1984
4475103 Integrated-circuit thermocouple signal conditioner Oct. 2, 1984
4453552 Electronic body temperature indicator Jun. 12, 1984
4441071 Temperature compensation circuit for thermocouples Apr. 3, 1984
4423968 Accurate hand-held digital readout thermometer Jan. 3, 1984
4423967 System for measuring temperatures of a flowing fluid Jan. 3, 1984
4403296 Measuring and determination device for calculating an output determination based on a mathematical relationship between multiple different input responsive transducers Sep. 6, 1983
4370546 Kiln temperature controller Jan. 25, 1983
4359747 Thermocouple recorder Nov. 16, 1982
RE30735 Automatic thermocouple reference junction compensator Sep. 8, 1981
4282752 Multi-channel temperature measurement amplification system Aug. 11, 1981
4282752 Multi-channel temperature measurement amplification system Aug. 11, 1981

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