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ISO124U-1K Datasheet(PDF) 9 Page - Texas Instruments |
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ISO124U-1K Datasheet(HTML) 9 Page - Texas Instruments |
9 / 19 page ISO124 9 SBOS074C www.ti.com FIGURE 6. Thermocouple Amplifier with Ground Loop Elimination, Cold Junction Compensation, and Up-scale Burn-out. FIGURE 7. Isolated 4-20mA Instrument Loop. (RTD shown.) R CM 1k Ω RCV420 XTR105 R G R Z (1) 13 3 4 2 6 7 10 14 1 0.01 µF 4-20mA RTD (PT100) 0.8mA 0.8mA 1.6mA 14 15 16 3 2 10 4 12 11 5, 13 15 16 2 1 Gnd –V S = –15V on PWS740 +V S = 15V on PWS740 9 10 7 8 –V +V ISO124 V OUT 0V - 5V NOTE: (1) R Z = RTD resistance at minimum measured temperature. 2 6 10.0V 4 REF102 INA114 or INA128 +In 7 4 3 8 1 2 5 16 15 8 10 ISO124 7 V OUT 9 6 –In +15V +15V –15V +15V –15V ISA TYPE E J K T MATERIAL Chromel Constantan Iron Constantan Chromel Alumel Copper Constantan SEEBACK COEFFICIENT ( µV/°C) 58.5 50.2 39.4 38.0 R 2 (R 3 = 100Ω) 3.48k Ω 4.12k Ω 5.23k Ω 5.49k Ω R 4 (R 5 + R6 = 100Ω) 56.2k Ω 64.9k Ω 80.6k Ω 84.5k Ω +15V –15V R 3 100 Ω Ground Loop Through Conduit NOTE: (1) –2.1mV/ °C at 2.00µA. R 1 27k Ω Isothermal Block with 1N4148(1) R 2 1M Ω R 5 50 Ω R G R 4 R 6 100 Zero Adj Thermocouple 2 1 |
Similar Part No. - ISO124U-1K |
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Similar Description - ISO124U-1K |
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