Transcription of Platinum resistance temperature sensors Pt100 (Pt1000)
1 Platinum resistance temperature sensors Pt100 ( pt1000 ). Relation temperature vs. resistance According to IEC751 / ITS-90. C. ITS-90 0 1 2 3 4 5 6 7 8 9 10. -200 -190 -180 -170 -160 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 pt1000 = Pt100 x 10. P-TSIEC751/CE 2004-11-25. C. ITS-90 0 1 2 3 4 5 6 7 8 9 10. 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 360 370 380 390 400 410 420 430 440 450 460 470 480 490 500 510 520 530 540 550 560 570 580 590 600 610 620 630 640 650 660 670 680 690 700 710 720 730 740 750 760 770 780 790 800 810 820 830 840 850 pt1000 = Pt100 x 10. The temperature / resistance relationships used in this standard are as follows: - for the range -200 C to 0 C: Rt = R0 [1 + At + Bt2 + C(t 100 C) t3].
2 - for the range 0 C to 850 C: Rt = R0 [1 + At + Bt2). A = x 10-3 C -1. B = x 10-7 C -2. C = x 10-12 C -4. For resistance thermometers satisfying the above relationships the temperature coefficient , defined as: = (R100 - R0) has the exact value C. 100 x R0. where R100 is the resistance at 100 C. R0 is the resistance at 0 C. Tolerances, Pt100 and pt1000 . The tolerance values of resistance thermometers are classified as follows: Tolerance class Tolerance ( C). A + |t|*. B + |t|. *|t| = modulus of temperature in degrees Celsius without regard to sign. Tolerance temperature Class A Class B. ( C) ( C) ( ) ( C) ( ). -200 -100 0 100 200 300 400 500 600 650 700 - - 800 - - 850 - - KO N G S B ER G M AR I T I M E A S. NO-7005 Trondheim Norway Telephone: +47 73 58 10 00 Telefax: +47 73 58 10 01]
