WAGO 750-451

WAGO 750-451 – 8 AI Resistance / RTD (Adjustable Sensor Types)

Overview

The WAGO 750-451 is an 8-channel analog input module designed for resistance measurement and RTDs (e.g. Pt / Ni sensors). It supports 2-wire versions of sensors, automatic linearization of the full temperature range, and per-channel LED error indication for faults like wire break, short circuit or out-of-range conditions. Unused channels can be deactivated. Ideal for industrial applications with varied sensor types and high monitoring needs.

Key Features

• Supports multiple RTD and resistor sensor types (configurable)

• 8 input channels, 2-wire connection each

• Automatic linearization across full temperature range

• LED per channel status (green for normal, red for error)

• Deactivation of unused channels to reduce overhead

• High accuracy for different sensor classes

• Adjustable configuration via commissioning tools

• Strong isolation between system and field sides

Technical Specifications

Part Number: 750-451
Number of Analog Inputs: 8 (resistance / RTD)
Signal / Sensor Types: Pt100, Pt200, Pt500, Pt1000; Ni100, Ni120, Ni1000; potentiometers (10 Ω … 1.2 kΩ / 10 Ω … 5 kΩ)
Wiring: 2-wire per channel
Resolution: 0.1 °C over full range; 0.01 °C in restricted range (−50 … +150 °C for Pt1000, Ni1000)
Conversion Time (typical): 100 ms
Measurement Error at 25 °C:
 - ≤ ±0.6 K for Pt100, Pt200, Pt500, Ni100, Ni120
 - ≤ ±0.2 K for Pt1000, Ni1000
 - ≤ ±0.3 Ω for resistance measurement
Typical Measuring Current: ≤ 350 µA
Response Time (Max): 3 seconds
Temperature Ranges:
 - Pt sensors: −200 … +850 °C
 - Ni100, Ni1000: −60 … +250 °C
 - Ni120: −80 … +260 °C
System Supply Voltage: 5 VDC via data contacts
System Current Consumption: ~110 mA
Field Supply Voltage: 24 VDC (−25 … +30 %) via power jumper contacts
Isolation Voltage (System vs Field): 500 V
Number of Power Jumper Contacts: 2 incoming / 2 outgoing
Connection Technology: Push-in CAGE-CLAMP® for all inputs
Conductor Size (Solid / Stranded): 0.08 … 1.5 mm² solid; 0.25 … 1.5 mm² stranded
Wire Strip Length: 8 … 9 mm
Width: ~12 mm
Height: ~100 mm
Depth: ~69 mm
Depth from Top Edge of DIN-rail: ~61.8 mm
Operating Temperature: 0 °C … +55 °C
Storage Temperature: −40 °C … +85 °C
Protection Rating: IP20
Pollution Degree: 2

Applications

• Precision temperature control with RTDs across wide temperature ranges

• Industrial monitoring where multiple RTD channels are needed in one module

• Heater / cooler systems, environmental control, thermal process measurement

• Systems requiring error detection per sensor channel for maintenance

Why Choose the WAGO 750-451

• Flexible sensor type support helps reduce part count and inventory

• Good resolution and error monitoring enhance reliability and safety

• Deactivation of unused channels can save power and simplify system configuration

• Compactness and strong electrical isolation make it safe and suitable for industrial use

Order Now

The WAGO 750-451 is part of the WAGO I/O System 750 product line and is available for purchase. Ships worldwide.

NEW product in original sealed packaging. The product may be of older version or design. The packaging may have markings, signs of discoloration, and wear. DDPARTSSOLUTION Warranty: 1 Year. Manufacturer's Warranty and Support NEVER apply