Datenblatt-Suchmaschine für elektronische Bauteile |
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AD594 Datenblatt(PDF) 3 Page - Analog Devices |
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AD594 Datenblatt(HTML) 3 Page - Analog Devices |
3 / 8 page AD594/AD595 REV. C –3– Thermocouple Type J AD594 Type K AD595 Temperature Voltage Output Voltage Output °C mV mVmVmV –200 –7.890 –1523 –5.891 –1454 –180 –7.402 –1428 –5.550 –1370 –160 –6.821 –1316 –5.141 –1269 –140 –6.159 –1188 –4.669 –1152 –120 –5.426 –1046 –4.138 –1021 –100 –4.632 –893 –3.553 –876 –80 –3.785 –729 –2.920 –719 –60 –2.892 –556 –2.243 –552 –40 –1.960 –376 –1.527 –375 –20 –.995 –189 –.777 –189 –10 –.501 –94 –.392 –94 0 0 3.1 0 2.7 10 .507 101 .397 101 20 1.019 200 .798 200 25 1.277 250 1.000 250 30 1.536 300 1.203 300 40 2.058 401 1.611 401 50 2.585 503 2.022 503 60 3.115 606 2.436 605 80 4.186 813 3.266 810 100 5.268 1022 4.095 1015 120 6.359 1233 4.919 1219 140 7.457 1445 5.733 1420 160 8.560 1659 6.539 1620 180 9.667 1873 7.338 1817 200 10.777 2087 8.137 2015 220 11.887 2302 8.938 2213 240 12.998 2517 9.745 2413 260 14.108 2732 10.560 2614 280 15.217 2946 11.381 2817 300 16.325 3160 12.207 3022 320 17.432 3374 13.039 3227 340 18.537 3588 13.874 3434 360 19.640 3801 14.712 3641 380 20.743 4015 15.552 3849 400 21.846 4228 16.395 4057 420 22.949 4441 17.241 4266 440 24.054 4655 18.088 4476 460 25.161 4869 18.938 4686 480 26.272 5084 19.788 4896 Thermocouple Type J AD594 Type K AD595 Temperature Voltage Output Voltage Output °CmV mV mV mV 500 27.388 5300 20.640 5107 520 28.511 5517 21.493 5318 540 29.642 5736 22.346 5529 560 30.782 5956 23.198 5740 580 31.933 6179 24.050 5950 600 33.096 6404 24.902 6161 620 34.273 6632 25.751 6371 640 35.464 6862 26.599 6581 660 36.671 7095 27.445 6790 680 37.893 7332 28.288 6998 700 39.130 7571 29.128 7206 720 40.382 7813 29.965 7413 740 41.647 8058 30.799 7619 750 42.283 8181 31.214 7722 760 – – 31.629 7825 780 – – 32.455 8029 800 – – 33.277 8232 820 – – 34.095 8434 840 – – 34.909 8636 860 – – 35.718 8836 880 – – 36.524 9035 900 – – 37.325 9233 920 – – 38.122 9430 940 – – 38.915 9626 960 – – 39.703 9821 980 – – 40.488 10015 1000 – – 41.269 10209 1020 – – 42.045 10400 1040 – – 42.817 10591 1060 – – 43.585 10781 1080 – – 44.439 10970 1100 – – 45.108 11158 1120 – – 45.863 11345 1140 – – 46.612 11530 1160 – – 47.356 11714 1180 – – 48.095 11897 1200 – – 48.828 12078 1220 – – 49.555 12258 1240 – – 50.276 12436 1250 – – 50.633 12524 Table I. Output Voltage vs. Thermocouple Temperature (Ambient +25 °C, V S = –5 V, +15 V) thermocouples Table I should not be used in conjunction with European standard thermocouples. Instead the transfer function given previously and a DIN thermocouple table should be used. ANSI type K and DIN NICR-NI thermocouples are composed OVERLOAD DETECT G –TC +TC 123 45 67 13 12 11 10 AD594/ AD595 CONSTANTAN (ALUMEL) IRON (CHROMEL) +5V COMMON 14 ICE POINT COMP. +A 98 G 10mV/ C Figure 1. Basic Connection, Single Supply Operation of identical alloys and exhibit similar behavior. The upper tem- perature limits in Table I are those recommended for type J and type K thermocouples by the majority of vendors. SINGLE AND DUAL SUPPLY CONNECTIONS The AD594/AD595 is a completely self-contained thermocouple conditioner. Using a single +5 V supply the interconnections shown in Figure 1 will provide a direct output from a type J thermocouple (AD594) or type K thermocouple (AD595) mea- suring from 0 °C to +300°C. Any convenient supply voltage from +5 V to +30 V may be used, with self-heating errors being minimized at lower supply levels. In the single supply configuration the +5 V supply con- nects to Pin 11 with the V– connection at Pin 7 strapped to power and signal common at Pin 4. The thermocouple wire in- puts connect to Pins 1 and 14 either directly from the measuring point or through intervening connections of similar thermo- couple wire type. When the alarm output at Pin 13 is not used it should be connected to common or –V. The precalibrated feed- back network at Pin 8 is tied to the output at Pin 9 to provide a 10 mV/ °C nominal temperature transfer characteristic. By using a wider ranging dual supply, as shown in Figure 2, the AD594/AD595 can be interfaced to thermocouples measuring both negative and extended positive temperatures. |
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