Thermocouple trip amplifiers KHA6GT*Ex1 23 V AC 1channel Input EEx ia IIC Cold junction compensation 2 switching points operate on 2 output relays High/low alarm can be selected for each switching point Mode of operation of the relay selectable separately Lead breakage monitoring (can be deactivated) LCdisplay for switching point and actual value Hysteresis, adjustable for each switching point in the range of 1 % 1 % All indicator and operating elements on the front side laid out Discontinued type Function Thermocouple without cold junction compensation Thermocouple with cold junction compensation yellow 1 reference limit T1 1 11 12 Output I T1 yellow Input EEx ia IIC M T2 S1 LCD reference limit 2 2 S21 S22 S23 S24 S25 T2 13 14 15 Output II 3 3 2 green 17+ 18 ~ Power supply Hazardous area Safe area The trip amplifier converts the thermocouple voltage into a proportional internal voltage The thermocouple must be connected to terminals 1 and 2 when cold junction compensation is requi Otherwise, the thermocouple is connected to terminals 1 and 3 A comparator checks the internal voltage against the two set reference values The hysteresis, the mode of operation and the type of alarm (high/low) is optional for each switch point High alarm means that the alarm is tripped when a limit is exceeded and is reset when it falls below another specified limit The hysteresis, which is the difference between these limits, is adjustable Low alarm is tripped when the value falls below a specified limit The output relays transfer the switch state potentially isolated across output terminals 1, 11, 12 and 13, 14, 15 The built in LCdisplay shows the thermocouple voltage in mv The corresponding temperature can be determined through the thermocouple value table (see last page) When lead breakage occurs in the input circuit, the output relays are open Composition 22516_ENGxml 23324 1 Pepperl+Fuchs Group Tel: Germany +49 621 776 USA +1 33 4253555 Singapore +65 6779991 Internet http://wwwpepperlfuchscom
Technical Data KHA6GT*Ex1 22516_ENGxml 23324 Supply Connection terminals 17, 18 Rated voltage 85 253 V AC, 45 65 Hz Ripple Power consumption approx 2 W Input Connection terminals, 2, 3 Input with cold junction compensation: terminals, 2 Input without cold junction compensation: terminals, 3 Loop resistance 65 Ohm Output Measurement range see note Output I limit value 1: terminals 1, 11, 12 Output II limit value 2: terminals 13, 14, 15 Contact loading 253 V AC, 2 A, cos ϕ > 6 Mechanical life 2 x 1 7 switching cycles Transfer characteristics Deviation LCdisplay, 5 % of measuring value + 1 digit Temperature clamping point measuring error at 273 K: ± 15 K switching point: 3 % of measuring range display: 1 % / K of measuring range Influence of supply voltage not measurable Repeat accuracy,2 % Input delay 3 ms (rise time and energising delay of relay) Electrical isolation Input/Output safe electrical isolation acc to EN 52 Input/Power supply safe electrical isolation acc to EN 52 Output/Power supply available Standard conformity Coordination of insulation acc to DIN EN 5178 Electrical isolation acc to DIN EN 5178 Electromagnetic compatibility acc to EN 5812 / EN 5822 Climatic conditions acc to DIN IEC 721 Directive conformity Electromagnetic compatibility standards Directive 89/336/EG on request Ambient conditions Ambient temperature 25 65 C (248 338 K) Mechanical specifications Protection degree IP2 Mass approx 25 g Data for application in conjunction with hazardous areas ECType Examination Certificate PTB No Ex93C273 ; for additional certificates refer to the approval list Voltage U 22 V DC Current I 7,8 ma Power P 3 mw Type of protection [EEx ia] Explosion group IIB IIC External capacitance,43 µf,69 µf External inductance 25 mh 5 mh Type of protection [EEx ib] Explosion group IIB IIC External capacitance,776 µf,126 µf External inductance 1 mh 54 mh Supply Safety maximum voltage U m 253 V AC Electrical isolation Input/Output safe electrical isolation acc to EN 52 Input/Power supply safe electrical isolation acc to EN 52 Directive conformity standards Directive 94/9 EU on request Safety parameter CSA control drawing LR 36878 Pepperl+Fuchs Group Tel: Germany +49 621 776 USA +1 33 4253555 Singapore +65 6779991 Internet http://wwwpepperlfuchscom 2
KHA6GT*Ex1 Notes Monitoring of limit values during temperature measurement with type J, K, R, S and T thermocouples Additional measurement ranges: GTA 12 mv +2 mv for thermocouple GTB 2 mv +12 mv for thermocouple type K, T GTC 2 mv +25 mvfor thermocouple type K, T GTD 12 mv +7 mv for thermocouple type K, T GTE 2 mv +7 mv for thermocouple type K, T GTF 12 mv +2 mv for thermocouple type J GTG 2 mv +12 mv for thermocouple type J GTH 2 mv +25 mv for thermocouple type J GTI 12 mv +7 mv for thermocouple type J GTJ 2 mv +7 mv for thermocouple type J GTK 2 mv +12 mv for thermocouple type R, S GTL 2 mv +25 mv for thermocouple type R, S GTM 5 mv +2 mv for thermocouple type R, S LCdisplay Reference values are displayed in mv LCdisplay selector switch With switch S1 it is possible to select, which value (actual or reference value) is indicated on the LCdisplay S1 in pos T1: switch point 1 (reference value or limit value 1) S1 in pos T2: switch point 2 (reference value or limit value 2) S1 in pos M: actual value Potentiometer T1, T2 By means of the potentiometers T1 or T2 the switch points or limit values are set T1: Adjustment of switch point 1 (reference value or limit value 1) T2: Adjustment of switch point 2 (reference value or limit value 2) Potentiometer 1 and 2 The potentiometer 1 and 2 serve for the hysteresis adjustment of the individual switch points in a range of 1 % 1 % refer to the measurement value 1 Hysteresis switch point 1 (reference value or limit value 1) 2 Hysteresis switch point 2 (reference value or limit value 2) DIP switch S2 Switch Position Function S21 OPEN High alarm output I Low alarm output I S22 OPEN Relays closed on alarm state Relays open in alarm state S23 OPEN Lead breakage monitoring off Lead breakage monitoring on S24 OPEN High alarm output II Low alarm output II S25 OPEN Relays closed on alarm state Relays open in alarm state 22516_ENGxml 23324 3 Pepperl+Fuchs Group Tel: Germany +49 621 776 USA +1 33 4253555 Singapore +65 6779991 Internet http://wwwpepperlfuchscom
KHA6GT*Ex1 Basic values of the thermoelectric voltage of thermocouples for temperatures from 1 to 1 degrees in mv; reference temperature: C 1 Thermocouple type J FeCuNi IEC 584 2 1 789 4632 896 536 51 5426 995 581 1481 6159 196 6499 2431 6821 2892 7122 3344 742 3785 1 2 3 4 5 6 7 8 9 1 11 12 5268 1777 16325 21846 27388 3396 3913 45498 51875 57942 63777 69536 57 5812 11332 16879 22397 27949 33683 39754 46144 52496 58533 64355 119 6359 11887 17432 22949 28511 34273 4382 4679 53115 59121 64933 1536 697 12442 17984 2351 2975 34867 4113 47434 53729 5978 6551 258 7457 12998 18537 2454 29642 35464 41647 4876 54341 6293 6687 2585 88 13553 1989 2467 321 3666 42283 48716 54948 6876 66664 3115 856 1418 1964 25161 3782 36671 42922 49354 55553 61459 6724 3649 9113 14663 2192 25716 31356 3728 43563 49989 56155 6239 67815 4186 9667 15217 2743 26272 31933 37893 4427 5621 56753 62619 6839 7659 4215 4725 1222 15771 21295 26829 32513 3851 44852 51249 57349 63199 68964 2 Thermocouple type K NiCrNi IEC 584 2 1 5891 3553 635 3852 392 6158 4138 777 3 Thermocouple type R Pt13RhPt IEC 584 6262 441 1156 6344 4669 1527 644 4912 1889 6441 5141 2243 6458 5354 2586 555 292 1 2 3 4 5 6 7 8 9 1 11 12 13 495 8137 1227 16395 264 2492 29128 33277 37325 41269 4518 48828 52398 397 458 8537 12623 16818 2166 25327 29547 33686 37724 41657 45486 49192 52747 798 4919 8938 1339 17241 21493 25751 29965 3495 38122 4245 45863 49555 5393 123 5327 9341 13456 17664 21919 26176 3383 3452 38519 42432 46238 49916 53439 1611 5733 9745 13874 1888 22346 26599 3799 3499 38915 42817 46612 5276 53782 222 6137 1151 14292 18513 22772 2722 31214 35314 3931 4322 46985 5633 54125 2436 6539 156 14712 18938 23198 27445 31422 35718 3973 43585 47356 599 54466 285 6939 1969 15132 19363 23624 27867 3242 36121 496 43968 47726 51344 5487 3266 7338 11381 15552 19788 245 28288 32455 36524 4488 44349 4895 51697 573 3242 3681 7737 11793 15974 2214 24476 2879 32866 36925 4879 44729 48462 5249 51 1 145 188 226 22516_ENGxml 23324 1 2 3 4 5 6 7 8 9 1 11 12 13 14 15 16 17 647 1468 24 347 4471 5582 6741 7949 923 153 11846 13224 14624 1635 17445 18842 2215 54 723 1557 2498 3511 458 5696 686 872 9331 1636 11983 13363 14765 16176 17585 18981 235 111 8 1647 2596 3616 4689 581 6979 8196 946 1768 12119 1352 1496 16317 17726 19119 2483 171 879 1738 2695 3721 4799 5925 798 832 9589 192 12257 13642 1547 16458 17866 19257 2616 232 959 183 2795 3826 491 64 7218 8445 9718 1135 12394 13782 15188 16599 186 19395 2748 296 141 1923 2896 3933 521 6155 7339 857 9848 1117 12532 13922 15329 16741 18146 19533 2878 363 1124 217 2997 439 5132 6272 746 8696 9978 1134 12669 1462 1547 16882 18286 1967 216 431 128 2111 399 4146 5244 6388 7582 8822 119 11439 1288 1422 15611 1722 18425 1987 51 1294 227 321 4254 5356 655 773 8949 124 11574 12946 14343 15752 17163 18564 19944 573 138 233 334 4362 5469 6623 7826 976 1371 1171 1385 14483 15893 1734 1873 28 Pepperl+Fuchs Group Tel: Germany +49 621 776 USA +1 33 4253555 Singapore +65 6779991 Internet http://wwwpepperlfuchscom 4
KHA6GT*Ex1 4 Thermocouple type S Pt1RhPt IEC 584 53 13 15 194 236 1 2 3 4 5 6 7 8 9 1 11 12 13 14 15 16 17 645 144 2323 326 4234 5237 6274 7345 8448 9585 1754 11947 13155 14368 15576 16771 17942 55 719 1525 2414 3356 4333 5339 638 7454 856 97 1872 1267 13276 14489 15697 1689 1856 113 795 1611 256 3452 4432 5442 6486 7563 8673 9816 1991 12188 13397 1461 15817 178 1817 5 Thermocouple type T CuCuNi IEC 584 173 872 1698 2599 3549 4532 5544 6592 7672 8786 9932 1111 1238 13519 14731 15937 17125 18282 235 95 1785 2692 3645 4632 5648 6699 7782 8899 148 11229 12429 1364 14852 1657 17243 18394 299 129 1873 2786 3743 4732 5751 685 7892 912 1165 11348 1255 13761 14973 16176 1736 1854 365 119 1962 288 384 4832 5855 6913 83 9126 1282 11467 12671 13883 1594 16296 17477 18612 432 119 251 2974 3938 4933 596 72 8114 924 14 11587 12792 144 15215 16415 17594 52 1273 2141 369 436 534 664 7128 8225 9355 1517 1177 12913 14125 15336 16534 17711 573 1356 2232 3164 4135 5136 6169 7236 8336 947 1635 11827 1334 14247 15456 16653 17826 2 1 563 3378 5753 3656 383 5889 3949 757 67 4177 1121 615 4419 1475 6181 4648 1819 6232 4865 2152 6258 569 2475 5261 2788 1 2 3 4 4277 9286 1486 2869 391 4749 982 15443 789 5227 136 163 1196 5712 195 16621 1611 624 11456 17217 235 672 1211 17816 2467 727 12572 1842 298 7718 13137 1927 3357 8235 1377 19638 5439 389 3813 8757 14281 2252 22516_ENGxml 23324 5 Pepperl+Fuchs Group Tel: Germany +49 621 776 USA +1 33 4253555 Singapore +65 6779991 Internet http://wwwpepperlfuchscom