4-channel input terminal RTD, 2-wire connection, 16 bit, Ex i ELX3204
Error LED 4
Error LED 3
Error LED 2
Error LED 1
Run LED 
Power contact
+24 V EX
Power contact
0 V EX
+R1
+R2
+R3
+R4
-R1
-R2
-R3
-R4
Top view 
extended temperature range
extended shock and vibration range

ELX3204 | 4-channel input terminal RTD, 2-wire connection, 16 bit, Ex i

ExThe 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 | ESX3204
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 < ±0.5 °C for PT and Ni sensors
Internal resistance ≥ 10 kΩ typ. (differential)
Input filter limit frequency typ. 1 kHz
Conversion time 10…800 ms (adjustable, default: 50 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
Electrical isolation 2500 V (E-bus/field potential)
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
Pluggable wiring for all ESXxxxx terminals
Approvals CE, Ex (certification pending)
further Ex components  
ELXxxxx EtherCAT Terminals with intrinsic safe in- and output
CPXxxxx Multi-touch Panel PCs and multi-touch Control Panels for use in hazardous areas, Zone 2/22
Product announcement
estimated market release 4th quarter 2017