1-channel analog input terminal 4…20 mA, single-ended, 16 bit, HART, Ex i ELX3181
Error LED
HART error LED 1 
HART LED 1 
Error LED 1 
Run LED 
Power contact
+24 V EX
Power contact
0 V EX
UV1
Top view 
extended temperature range
extended shock and vibration range

ELX3181 | 1-channel analog input terminal 4…20 mA, single-ended, 16 bit, HART, Ex i

ExThe ELX3181 analog input terminal allows the direct connection of intrinsically safe HART-capable field devices located in hazardous areas classified Zone 0/20 or 1/21. It supplies measuring transducers located in the field and transmits their analog measuring signals electrically isolated to the automation device. With a technical measuring range of 107 % of the nominal range, the terminal also supports commissioning with sensor values in the limit range and an evaluation according to NAMUR NE43. The HART protocol (Highway Addressable Remote Transducer) enables two-way communication through digital data transfer via the analog 4…20 mA wiring. The EtherCAT Terminal indicates the signal state by means of light emitting diodes. Error LEDs signal overload and wire breakage, in addition to which LEDs provide information about the state of the HART communication and indicate any communication errors.

Technical data ELX3181 | ESX3181
Technology intrinsically safe sensors with HART
Signal current 4…20 mA
Number of inputs 1 (single-ended)
Connection method 2-wire
Resolution 16 bit (incl. sign)
Measuring error < ±0.3 % (relative to full scale value)
Internal resistance typ. 250 Ω
Input filter limit frequency 25 Hz
Dielectric strength max. 30 V
Conversion time typ. 1 ms
Supply voltage electronics 24 V DC (via power contacts), ELX9560 power supply
Current consumption power contacts typ. 10 mA + load
Current consumption E-bus typ. 85 mA
Distributed clocks yes
Special features standard and compact process image, activatable FIR/IIR filters, limit value monitoring, NE43 NAMUR
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