Analog input
ELX3204
Error LED 4
Error LED 3
Error LED 2
Error LED 1
Run LED
Power contact
+24 V EX
+24 V EX
Power contact
0 V EX
0 V EX
+R1
+R2
+R3
+R4
-R1
-R2
-R3
-R4
Top view
ELX3204 | 4-channel analog input terminal RTD, 2-wire connection, 16 bit, Ex i
The ELX3204 analog input terminal allows the direct connection of RTDs located in hazardous areas classified Zone 0/20 or 1/21. The circuitry of the ELX3204 can operate sensors with 2-wire technology. Linearisation is carried out over the entire freely selectable temperature range. By default the terminal is set to PT100 sensors with 2-wire technology. The ELX3204 terminal indicates signal state and sensor malfunctions (e.g. wire breakage) by means of LEDs.
| Technical data | ELX3204 |
|---|---|
| Technology | temperature measurement |
| Sensor types | PT100, PT200, PT500, PT1000, Ni100, Ni120, Ni1000 resistance measurement (10 Ω…4 kΩ), KT(Y) sensors |
| Number of inputs | 4 (differential) |
| Connection method | 2-wire |
| Temperature range | -200…+850 °C (PT sensors); -60…+250 °C (Ni sensors), for further types and details see documentation |
| Resolution | 0.1 °C per digit |
| Measuring current | < 1 mA (depending on sensor and measuring range) |
| Measuring error | < ±0.3 % (relative to full scale value) |
| Internal resistance | typ. ≥ 10 kΩ (differential) |
| Input filter limit frequency | typ. 1 kHz |
| Conversion time | 10…3300 ms (adjustable, default: 270 ms) |
| Supply voltage electronics | 24 V DC (via power contacts), ELX9560 power supply |
| Current consumption power contacts | typ. 10 mA |
| Current consumption E-bus | typ. 70 mA |
| Special features | limit value monitoring, digital filter and characteristic curve linearisation integrated, connection method freely configurable |
| Weight | approx. 60 g |
| Operating/storage temperature | -25…+60 °C/-40…+85 °C |
| Relative humidity | 95 %, no condensation |
| Vibration/shock resistance | conforms to EN 60068-2-6/EN 60068-2-27 |
| EMC immunity/emission | conforms to EN 61000-6-2/EN 61000-6-4 |
| Protect. class/installation pos. | IP 20/see documentation |
| Approvals/Markings | CE, ATEX, IECEx |
| Ex-Marking | II 3(1)G Ex ec [ia Ga] IIC T4 Gc II (1)D [Ex ia Da] IIIC I (M1) [Ex ia Ma] I Ex ec [ia Ga] IIC T4 Gc [Ex ia Da] IIIC [Ex ia Ma] I |
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