BG51837A1 - Device for multipoint temperature measurement - Google Patents

Device for multipoint temperature measurement

Info

Publication number
BG51837A1
BG51837A1 BG9271290A BG9271290A BG51837A1 BG 51837 A1 BG51837 A1 BG 51837A1 BG 9271290 A BG9271290 A BG 9271290A BG 9271290 A BG9271290 A BG 9271290A BG 51837 A1 BG51837 A1 BG 51837A1
Authority
BG
Bulgaria
Prior art keywords
resistors
multiplexers
inverting input
amplifier
platinum
Prior art date
Application number
BG9271290A
Inventor
Nikolaj G Apostolov
Boris E Velev
Original Assignee
Bg Inst Mikroprotsesorna Tekhn
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 Bg Inst Mikroprotsesorna Tekhn filed Critical Bg Inst Mikroprotsesorna Tekhn
Priority to BG9271290A priority Critical patent/BG51837A1/en
Publication of BG51837A1 publication Critical patent/BG51837A1/en

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  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

The apparatus is intended for temperature measurements in automated chromatographs, instruments, and stations used in environmental monitoring. The apparatus provides increased accuracy. The apparatus consists of a bridge circuit, a differential amplifier (5) across the diagonal of the bridge circuit, two multiplexers (8) and (9), and an operational amplifier (10). Three arms of the bridge include resistors (1), (2), and (3), while the fourth arm has numerous platinum resistors (4). Platinum resistors (4) provide positive feedback to the amplifier, since one side of each platinum resistor is connected to the non-inverting input of differential amplifier (5), and the other side is connected to the inputs of the two synchronously controlled multiplexers (8) and (9), which are, either directly or through limiting resistors (11) respectively. The outputs of multiplexers (8) and (9) are connected, respectively, to the inverting input and the output of operational amplifier (10), whose non-inverting input is connected to the mass.<IMAGE>
BG9271290A 1990-08-17 1990-08-17 Device for multipoint temperature measurement BG51837A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BG9271290A BG51837A1 (en) 1990-08-17 1990-08-17 Device for multipoint temperature measurement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BG9271290A BG51837A1 (en) 1990-08-17 1990-08-17 Device for multipoint temperature measurement

Publications (1)

Publication Number Publication Date
BG51837A1 true BG51837A1 (en) 1993-09-15

Family

ID=3923214

Family Applications (1)

Application Number Title Priority Date Filing Date
BG9271290A BG51837A1 (en) 1990-08-17 1990-08-17 Device for multipoint temperature measurement

Country Status (1)

Country Link
BG (1) BG51837A1 (en)

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