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1 Application Note 290 DVM A B i = 1µA/K 10kW 10mv/K v J3 J4 HI LO J2 80 E 60 K 40 J v1 J1 20 R S

2 2

3 V R R VI 3

4 e AB = a a a V = (V 1 V 2 ) `a(t J1 t J2 ) J1 ( ) = t J1 (K) V = V 1 V 2 = a[( J ) ( J )] = a( J1 J2 ) = ( J1 0) V = a J1 I e AB e AB = v J 3 HI LO v 1 J 1 = v 3 J3 v 1 v 2 J 1 = v 2 v 1 J 1 J 2 J 2 v = 0 3 J 2 4

5 v J 3 J 4 HI LO J 1 v 1 = v 1 v v 2 v 2 J 2 J 2 = 0 J1 v J 3 J 4 HI LO J 2 v 1 J 1 v v 3 v 4 J 3 J 4 v 1 v 3= v4 = J 3 J 4 v = v 1 V = a ( J1 REF ) v HI LO J 3 J 4 REF J1 5

6 V = a( J1 REF ) v HI LO J 3 J 4 J 1 J REF REF HI v v 1 J 1 J 3 LO V = a( J1 REF ) J 4 J REF V = a( J1 REF ) a = REF REF v J 1 J 3 J 4 REF 6

7 v HI LO v HI LO J 3 R J 4 R Pt = REF v 1 Pt 10%Rh J 1 7

8 8 = = R 0 v v e v i R H HI LO v J 1

9 a a t 90 = c 0 c 1 x c 2 x 2 c 3 x 3... c n x n t 90 = x = c = n = E J E J K R S K R S E J K R S

10 3 3 m 2 3 a = bx cx dx { a 10

11 DVM HI 1 ~ DVM 20 HI = =~ ~ ~ DVM HI 2 v IN v OU t t 11

12 12 HI DVM LO 240 Vrms HI LO R S 120 Vrms ~ HI LO R S 120 Vrms ~

13 PbSn ` ~

14 R L R S R S 1 R L R S R S 2 14

15 15

16 V = a( J REF ) v HI LO REF J 0 = a( J REF ) J = REF 1 = 1200 = 300 t 1 16

17 17 S 1

18 18

19 R = 5W R = 5W 100W RD a a DVM RD a ` 19

20 DVM RD i DVM i = 0 i = 0 100W RD DVM A B [ ( )( ) ( ) ( 3 )] R =R 0 R 0 a d 1 b R = R 0 = a = d = b = 20

21 21 adb

22 v / R RD 1 = A B(ln R) (ln R) 3 = R = A,B, = 1 = (ln R) A 22

23 m i = 1µA/K 10kW 10mv/K 23

24 24

25 25

26 v 1 = 1 v 1 = v 1 = P t 26

27 27, 0 42 v

28 v = a(1 2) HI LO

29 3 ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± 29

30 Its Measurement and ontrol in Science and Industry Fundamentals of emperature, Pressure and Flow Measurements Manual on the Use of hermocouples in emperature Measurement, Fourth Edition emperatureelectromotive Force Reference Functions and ables for the LetterDesignated hermocouple ypes Based on the IS90 emperature Measurement in Engineering emperature Measurement Handbook 1983 Branched hermocouple ircuits in Underground oal Gasification Experiments he Gradient Approach to hermocouple ircuitry, from emperature Its Measurement and ontrol in Science and Industry A Diagnosticsoriented System for hermocouple hermometry Handbook of ransducers for Electronic Measuring Systems oiled Filament Resistance hermometers Platinum Resistance emperature Sensors Platinum Resistance emperature Detectors State of the Art, Measurements & ontrol A Study of Stability of High emperature Platinum Resistance hermometers, in emperature Its Measurement and ontrol on Science and Industry he heory and Properties of hermocouple Elements YSI Precision hermistors hermoelectric hermometry. A Functional Model, from emperature Its Measurement and ontrol in Science and Industry Accuracy of Small Diameter Sheathed hermocouples for the ore Flow est Loop he Nicrosil vs. Nisil hermocouple: Properties and hermoelectric Reference Data 30

31 31

32 :0019:00 FAX Web 24 EL ( ) FAX ( ) opyright 2006 January 23, JAJP DEP

Practical Temperature Measurements - Application Note

Practical Temperature Measurements - Application Note APPLICATION NOTE Keysight Technologies ... 2... 4... 12 RTD... 21... 26 IC... 27... 28 A... 31 B... 32... 34... 35 RTD IC4 A 3 B Florentine 2 18 1 Gabriel Fahrenheit 96 1592 1 2 1 100 96 12 2448 96 Fahrenheit