Intrinsically Safe MODEX RTD

The MODEX RTD in Ex i module is designed to provide reliable and intrinsically safe connections for up to four sensors such as Pt100, Pt1000, resistors, or potentiometers. It ensures that all inputs are galvanically isolated from each other, the power supply, and the bus, enhancing safety and performance in hazardous environments. The module communicates with process control systems via the PROFIBUS-DP interface, providing diagnostic data and real-time status through integrated LEDs.

Features:

• Intrinsically Safe Connections: Supports up to 4 Pt100, Pt1000, resistors, or potentiometers.
• Galvanic Isolation: Each input is isolated from the others, the power supply, and the bus.
• PROFIBUS-DP Interface: Seamless integration with process control systems for real-time data transmission.
• LED Indicators: Displays status and diagnostic data directly on the module.
• Compact Design: Flameproof, clip-on enclosure suitable for TH 35 rail mounting.
• High-Quality Materials: Enclosure made from durable thermoplastic with IP 66 protection class.
• Advanced Diagnostics: Transmits data on disconnection, short circuits, and more.

Benefits:

• Enhanced Safety: Intrinsically safe design ensures reliable operation in hazardous areas.
• Versatile Applications: Suitable for various sensors and environments, making it ideal for industrial use.
• Efficient Monitoring: LED indicators provide immediate visual feedback, reducing downtime.
• Seamless Integration: Compatible with existing PROFIBUS-DP systems, making upgrades easy.

Applications:

• Ideal for use in hazardous environments such as chemical plants, oil and gas facilities, and other industrial settings requiring intrinsically safe instrumentation.
• Suitable for temperature measurement, resistance monitoring, and potentiometer applications in safety-critical processes.

Certifications and Standards:

• ATEX Certification: II 2(1)G Ex db e [ia Ga] IIC/IIB Gb.
• IECEx Certification: Ex db e [ia Ga] IIC/IIB Gb.
• CSA Certification: Class I, Zone 1, IIC A/Ex d e [ia] IIC Gb.
• Additional certifications available on request or from the manufacturer’s website.

Technical Specifications:

• Supply Voltage: 24 V DC (20 to 30 V).
• Power Consumption: 4 W.
• Operating Temperature: -25 °C to +60 °C.
• Storage Temperature: -40 °C to +60 °C.
• Enclosure Material: High-quality thermoplastic, IP 66 rated.
• Weight: 2.1 kg.
• Sensor Inputs:
  • Temperature Range: -150 °C to +850 °C for Pt100/Pt1000.
  • Resistance Range: 0 Ω to 5 kΩ.
  • Potentiometer Range: 500 Ω to 5 kΩ.
• Bus Interface: RS485 with screw terminals.
• Galvanic Isolation: Between power supply, bus, and input circuitry.

Datasheet: