JPS58122436A - Automatic temperature measuring device with high accuracy using electronic computer - Google Patents

Automatic temperature measuring device with high accuracy using electronic computer

Info

Publication number
JPS58122436A
JPS58122436A JP381682A JP381682A JPS58122436A JP S58122436 A JPS58122436 A JP S58122436A JP 381682 A JP381682 A JP 381682A JP 381682 A JP381682 A JP 381682A JP S58122436 A JPS58122436 A JP S58122436A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
errors
standard
temp
resistor
current
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.)
Pending
Application number
JP381682A
Inventor
Yasuo Kuraoka
Original Assignee
Hoxan Corp
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

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply, e.g. by thermoelectric elements
    • G01K7/16Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply, e.g. by thermoelectric elements using resistive elements
    • G01K7/18Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply, e.g. by thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
    • G01K7/20Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply, e.g. by thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer in a specially-adapted circuit, e.g. bridge circuit
    • G01K7/21Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply, e.g. by thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer in a specially-adapted circuit, e.g. bridge circuit for modifying the output characteristic, e.g. linearising

Abstract

PURPOSE:To measure the temp. of an object to be measured accurately by supplying the positive current and reverse current by a constant current source to a circuit for temp. measurement to offset components corresponding to thermoelectromotive force and correcting and operating the reading errors, full- scale errors, etc. of a voltmeter by a computer. CONSTITUTION:Electric currents of +1mA and -1mA are supplied to a circuit 8 for temp. measurement consisting of a standard platinum temp. measuring resistor 5, the 1st standard resistor 6 and the 2nd standard resistor 7 from a constant current source 4, and the values thereof are added to offset components corresponding to thermoelectromotive force. The reading errors, full- scale errors, etc. of a digital voltmeter are corrected by incorporating mathematical expressions to utilize a computer. Then, the errors to be produced result in quantization errors and the errors within the range of the accuracy of the standard platinum temp. measuring resistor and the accuracy of the standard resistors.
JP381682A 1982-01-13 1982-01-13 Automatic temperature measuring device with high accuracy using electronic computer Pending JPS58122436A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP381682A JPS58122436A (en) 1982-01-13 1982-01-13 Automatic temperature measuring device with high accuracy using electronic computer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP381682A JPS58122436A (en) 1982-01-13 1982-01-13 Automatic temperature measuring device with high accuracy using electronic computer

Publications (1)

Publication Number Publication Date
JPS58122436A true true JPS58122436A (en) 1983-07-21

Family

ID=11567707

Family Applications (1)

Application Number Title Priority Date Filing Date
JP381682A Pending JPS58122436A (en) 1982-01-13 1982-01-13 Automatic temperature measuring device with high accuracy using electronic computer

Country Status (1)

Country Link
JP (1) JPS58122436A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61210966A (en) * 1985-03-15 1986-09-19 Matsushita Electric Ind Co Ltd Highly accurate resistance measuring equipment
US5655841A (en) * 1992-07-01 1997-08-12 Whessoe Varec, Inc. Error-compensated temperature measuring system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61210966A (en) * 1985-03-15 1986-09-19 Matsushita Electric Ind Co Ltd Highly accurate resistance measuring equipment
JPH0518064B2 (en) * 1985-03-15 1993-03-10 Matsushita Electric Ind Co Ltd
US5655841A (en) * 1992-07-01 1997-08-12 Whessoe Varec, Inc. Error-compensated temperature measuring system

Similar Documents

Publication Publication Date Title
US4770026A (en) Method of and apparatus for testing breath alcohol
US4466749A (en) Microprocessor controlled thermocouple simulator system
US3688581A (en) Device for correcting the non-linear variation of a signal as a function of a measured magnitude
US3914689A (en) Self powering temperature compensated rectifier for measuring current
US4408128A (en) Electric resistance type wide range moisture meter
DE3213866A1 (en) Method and circuit arrangement for determining the value of the ohmic resistance of an object being measured
DE2656817A1 (en) Potential separation current measurement sensor - uses magnetic voltage sensor with single or multiple windings
US5872454A (en) Calibration procedure that improves accuracy of electrolytic conductivity measurement systems
JPS5917175A (en) Detecting element of magnetic field for extremely low temperature
EP0206488A1 (en) Method and apparatus for measuring electric current
US4448078A (en) Three-wire static strain gage apparatus
US4625175A (en) Device indicating the time remaining of the useful life of a battery
US3284709A (en) Precision voltmeter using selectable series connected, digitally related resistors which are calibrated to read the value of input signal
US4160946A (en) Device for measuring conductivity of a solution
CN200993608Y (en) High-precision temperature-measuring device
US3805616A (en) Temperature measuring apparatus
DE2447629A1 (en) Resistance measuring circuit - three wire circuit is used to balance line influences
JPS61126485A (en) Error measuring instrument
Budovsky A micropotentiometer-based system for low-voltage calibration of alternating voltage measurement standards
DE3200353A1 (en) Method and circuit arrangement, particularly for temperature measurement
DE3346387A1 (en) Circuit arrangement for monitoring short circuits to earth and frame
US2805394A (en) Alternating-current volt-ammeters
US3350635A (en) Solar cell and test circuit
US4143317A (en) Multiple range peak reading voltmeter
US3347770A (en) Area measurement and current density control device