Wago 750-451 8Ai, Rtd

Wago 750-451 8Ai, Rtd

WAGO 750-451 8-channel RTD analog input module for the WAGO I/O System 750 supporting platinum and nickel resistance temperature sensors.

SKU: 750-451Alt SKU: 750451MPN: 750-451
Price
List Price £319.14 ex VAT
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Manufacturer Lead Time

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

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

The module directly connects to RTD sensors such as Pt100, Pt200, Pt500, Pt1000, Ni100 and Ni120, converting resistance measurements into temperature values through integrated linearisation. This enables precise temperature monitoring across manufacturing, process control and building automation applications. :contentReference

Each of the eight input channels delivers high-resolution measurement data and can be individually configured through WAGO-I/O-CHECK or controller software. With its compact DIN rail housing and robust CAGE CLAMP® connection technology, the module provides reliable installation within distributed industrial control cabinets.

Key Advantages

  • High-density 8-channel RTD analog input module.
  • Supports multiple Pt and Ni resistance temperature sensors.
  • Automatic temperature linearisation for accurate measurements.
  • High measurement accuracy with configurable settings.
  • LED diagnostics indicate sensor faults such as wire breaks or short circuits.
  • Compact DIN rail design for modular distributed automation systems.

Key Features

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

Industrial Temperature Measurement

RTD sensors provide highly stable and accurate temperature measurement for industrial processes. Automation systems rely on RTD input modules to convert resistance values into digital temperature data that PLCs can process for monitoring, alarms and closed-loop control.

The WAGO 750-451 integrates these measurement capabilities into the modular 750 I/O platform, enabling scalable distributed automation systems with precise temperature monitoring across industrial production and process control environments. :contentReference

Typical Applications

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

Technical Specifications

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Number of I/O 8
Product Series WAGO I/O System 750
Device Type Analogue I/O Module
Signal Type / Function Analogue, Temperature (RTD/TC)
IP Rating IP20
Series WAGO I/O System 750
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 up to 0.01 °C (sensor dependent)
Conversion time approx. 100 ms
Measurement error (25 °C) ≤ ±0.6 K typical
Measuring current approx. 350 µA
Data width 16-bit per channel
System supply voltage 5 V DC via system bus
Field supply voltage 24 V DC via power jumper contacts
Isolation approx. 500 V between system and field levels
Connection technology CAGE CLAMP® spring terminals
Mounting 35 mm DIN rail
Module width approx. 12 mm
Protection rating IP20
Operating temperature approx. 0 °C to +55 °C
HS Code 85389099
Country of Manufacture Germany

Frequently Asked Questions

What is the WAGO 750-451 module used for?

The module measures resistance values from RTD sensors and converts them into temperature readings that PLCs or automation controllers can process.

How many sensor inputs does the module provide?

The module provides eight analog input channels for connecting multiple RTD sensors.

Which RTD sensors are supported?

The module supports platinum and nickel RTD sensors including Pt100, Pt200, Pt500, Pt1000, Ni100 and Ni120. :contentReference

How are sensor errors detected?

The module provides LED diagnostics and can detect conditions such as short circuits, wire breaks or out-of-range measurements. :contentReference

How is the module installed?

The module mounts onto a standard 35 mm DIN rail and connects to the WAGO I/O System 750 through the internal system bus.

Trusted by Automation Engineers

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

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