4 x RTD in Ex i

PROFIBUS-Interface for zone 1/21
  • 4 Channels
  • Pt100, Pt1000, Potentiometer, Resistors
  • Ex ia/ib
  • Galvanic isolation
  • LED display
  • Programmable address on front panel


The MODEX RTD in Ex i module enables an intrinsically safe connection of 4 Pt100, Pt1000, resistors or potentiometers. The inputs are galvanically isolated from each other, from the power supply and from the bus. The module is connected to the process control system via the PROFIBUS-DP. This is also displayed on the module itself using LEDs. Diagnostics data indicating the status of the outputs with respect to a disconnection or short-circuit can also be transmitted in addition to the user data. This is also displayed on the module itself using LEDs.

Technical Data

Protection class Module: IP 66 EN/IEC 60529
Terminals: IP 20 EN/IEC 60529
Terminals with cover: IP 30 EN/IEC 60529
Structure Flameproof, clip-on enclosure for TH 35 rail
Dimensions see data sheet
Material High-quality thermoplastic
Storage temperature -40 °C to +60 °C
Weight 2.1 kg
Display LEDs on front panel
Bus status: ON, BF, SF
Inputs: 4 x double LED
LED yellow, sensor active; LED red, open circuit/short circuit
Voltage Supply voltage: DC 24 V (20 to 30 V)
Output power 4 W
Power dissipation 4 W (Module)

Manuals/Operating Instructions/Guides

Manuals/Operating Instructions/Guides

Data Sheets

Data Sheet – PROFIBUS-Interface 4 x RTD in Ex i