Wago 750-461 2-Channel Analog Input Module for Pt100/RTD Temperature Sensors

The Wago 750-461 is a high-precision 2-channel analog input module specifically engineered for temperature measurement using Pt100 or RTD sensors. Designed for seamless integration into the Wago I/O system, this module provides reliable signal processing for industrial automation environments. It supports the connection of both 2-conductor and 3-conductor sensors, offering flexibility in various technical setups. The device features automatic linearization across the entire temperature range, ensuring accurate data acquisition for temperature-dependent processes.

Advantages

This module offers robust performance through its 0.5 kV isolation, which protects the system from electrical interference and ensures signal integrity. The inclusion of clear LED indicators allows for immediate status monitoring; a green LED confirms operational readiness and successful communication with the buscoupler, while a red LED provides instant notification of sensor errors. Furthermore, the module simplifies installation by allowing the shield to be connected directly to the DIN rail, streamlining the wiring process in control cabinets.

Suitable for

• Industrial temperature monitoring systems
• Process automation and control
• HVAC system integration
• Data acquisition for Pt100 and RTD sensors

When it may not be suitable

This module is not intended for use with sensor types other than Pt100 or RTD resistance sensors. It is also not suitable for applications requiring high-speed sampling rates, as the conversion time is fixed at 320 ms.

Key specifications

• Number of channels: 2
• Sensor compatibility: Pt100 and RTD
• Isolation voltage: 0.5 kV
• Conversion time: 320 ms
• Dimensions: 12 x 100 x 69.8 mm
• Connection types: 2-conductor and 3-conductor

How to use

To install the module, snap it onto the standard DIN rail within the Wago I/O system. Connect your Pt100 or RTD sensors to the appropriate terminals, ensuring the wiring matches the 2-conductor or 3-conductor configuration. The module will automatically linearize the input signals. Monitor the LED indicators during startup to verify that the module is communicating correctly with the buscoupler and that no sensor faults are detected.

What to consider before purchase

• Verify that your control system is compatible with the Wago I/O series.
• Ensure your sensors are specifically Pt100 or RTD types.
• Check if the 320 ms conversion time meets your process requirements.
• Confirm the physical space available on the DIN rail for the 12 mm wide module.

Usage recommendations

Always ensure that the shield is properly connected to the DIN rail to minimize electromagnetic interference. Regularly check the LED status indicators to ensure continuous and error-free operation of your temperature monitoring loops.