Wago 750-451/025-000 8AI

Why Choose the WAGO 750-451/025-000 8-Channel RTD Analog Input Module?

The WAGO 750-451/025-000 is a precision 8-channel RTD analog input module from the WAGO I/O System 750. It enables PLCs and industrial controllers to measure temperature and resistance values from connected platinum and nickel resistance sensors, providing reliable and accurate monitoring for industrial automation systems.

The module directly connects to RTD sensors such as Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120 and Ni1000. Integrated linearisation automatically converts resistance values into temperature data, allowing controllers to monitor thermal conditions across production processes, energy systems and building automation infrastructure. :contentReference

With eight configurable analog inputs in a compact DIN rail housing, the module offers high channel density for distributed automation systems. Configuration and diagnostics can be performed through WAGO-I/O-CHECK or compatible controller software, allowing flexible integration into industrial control architectures. :contentReference

Key Advantages

• High-density 8-channel RTD analog input module.
• Supports platinum and nickel resistance temperature sensors.
• Integrated automatic temperature linearisation.
• Configurable measurement parameters for flexible installations.
• Diagnostic indicators detect sensor faults or wiring errors.
• Compact DIN rail design for modular automation systems.

Key Features

• 8 analog input channels.
• Resistance and RTD temperature measurement.
• Compatible with Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120 and Ni1000 sensors.
• 2-wire RTD sensor connections.
• 16-bit process data resolution.
• Automatic linearisation across the temperature range.
• LED diagnostics for sensor errors.
• DIN rail mounted modular design.

Technical Specifications

• Manufacturer: WAGO
• Series: WAGO I/O System 750
• Model: 750-451/025-000
• Module type: RTD analog input module
• Number of inputs: 8 channels
• Signal type: Resistance / RTD temperature measurement
• Supported sensors: Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni1000
• Resolution: 0.1 °C over full range; up to 0.01 °C in specific ranges
• Conversion time: approx. 100 ms
• Measurement error (25 °C): approx. ±0.6 K typical
• Data width: 8 × 16-bit process data
• System supply voltage: 5 V DC via system bus
• Field supply voltage: 24 V DC via power jumper contacts
• Connection technology: Push-in CAGE CLAMP® spring terminals
• Mounting: 35 mm DIN rail
• Module width: approx. 12 mm
• Operating temperature: −20 °C to +60 °C
• Protection rating: IP20

Industrial Temperature Measurement

Temperature measurement is essential in industrial automation systems controlling manufacturing processes, energy infrastructure and building environments. RTD sensors are widely used because they offer excellent measurement stability, repeatability and accuracy across wide temperature ranges.

The WAGO 750-451/025-000 converts resistance measurements from RTD sensors into digital process data that PLCs and controllers can analyse in real time. This enables precise temperature monitoring, alarm generation and closed-loop process control in distributed automation architectures. :contentReference

Typical Applications

• Industrial temperature monitoring systems.
• Process automation and instrumentation.
• HVAC and building management systems.
• Manufacturing process control.
• Energy and utility infrastructure monitoring.

Trusted by Automation Engineers

WAGO I/O System 750 modules are widely used by machine builders and automation engineers to implement scalable distributed control systems across industrial and process automation environments.