WAGO 750-489

WAGO 750-489 – 4 AI RTD / TC / Strain Gauge (Ex i)

Overview

The WAGO 750-489 is a 4-channel analog input module designed to connect resistance temperature devices (RTDs), thermocouples,mV sensors, resistor bridges (strain gauges), potentiometers, and PTC thermistors. It features a 16-bit resolution, diagnostics for each channel, and is certified intrinsically safe (Ex i) for use in hazardous areas (Zones 0/1). Cold-junction compensation is built in. The module is compatible with WAGO-I/O System 750 and configured via GSD / e!COCKPIT / WAGO-I/O-CHECK.

Key Features

• Four analog input channels

• Supports RTDs (Pt / Ni), thermocouples types B, C, E, J, K, N, R, S, T; mV ranges; strain gauge / resistor bridge; potentiometer settings

• Multiple sensor wiring: 2-wire, 3-wire, 4-wire depending on sensor type

• Intrinsic safety certification for hazardous environments (Zones 0/1)

• 16-bit data resolution with optional 8-bit per-channel status/control

• Diagnostics: underflow, overflow, range over/under; LED indicators per channel

• Cold-junction compensation for thermocouple inputs

• Galvanic isolation between system and field levels; isolation per channel

Technical Specifications

Part Number: 750-489
Number of Analog Inputs: 4
Signal Types Configurable: RTD, thermocouple, strain gauge, mV sensor, resistor, potentiometer, PTC
Supported RTDs: Pt100, Pt200, Pt500, Pt1000; Ni100, Ni120, Ni200, Ni500, Ni1000, Ni1000-TK5000
Resistance and bridge: various ranges (250 Ω to several kΩ)
Thermocouple Ranges: e.g. Type B +250…+1820 °C; Type K -200…+1372 °C; etc.
Millivolt ranges: ±30, ±60, ±120, ±250, ±500, ±1000, ±2000 mV
Resolution: 16 bits (data), optional status/control per channel (8 bits)
Measurement Error at 25 °C (RTD/TC): ±0.2 % full scale (factory calib.); after user calibration ±0.05 % in thermally stable conditions
Temperature Coefficient: ±0.001 % / K of full scale
Conversion Time: ≥10 ms for 2-wire; ≥20 ms for 3-wire or 4-wire sensor types
Supply Voltage (Field / Ex i): 24 VDC; Ex i power supply: max Uo = 27.3 V via power jumper contacts
System Supply Voltage (logic side): 5 VDC via data contacts
Current Consumption (Field side, no external load): approx. 120 mA in strain gauge mode; ~50 mA in RTD/TC mode
Current Consumption (System side): ~60 mA
Power Loss: approx. 1.6 W in RTD/TC mode; up to ~3.2 W in strain gauge loads
Isolation (System / Field): per EN/IEC 60079-11, 300 VAC; per UL standard 1200 VDC between system/field/channel
Incoming / Outgoing Power Jumper Contacts: 2 each
Connection Technology: CAGE-CLAMP®
Solid / Stranded Conductor Size: 0.08 … 2.5 mm² (AWG 28 … 14)
Wire Strip Length: 8 … 9 mm
Dimensions: Width 24 mm; Height 100 mm; Depth 67.8 mm
Depth from upper edge of DIN-rail: ~60.6 mm
Operating Temperature: 0 … +55 °C
Storage Temperature: -25 … +85 °C
Protection Rating: IP20
Weight: approx. 99 g
EMC: Meets immunity/emission standards for marine and industrial environments
Explosion Protection Approvals: Ex ec [ia Ga] IIC T4 Gc; etc.

Applications

• Temperature measurement (RTDs, TCs) in hazardous areas (Zones 0/1)

• Signal acquisition from strain gauges / bridges in industrial or process automation

• Use in systems where safety certifications and diagnostics are required

• Monitoring and control in plants requiring both analog precision and explosion safety

Why Choose the WAGO 750-489

• Intrinsic safety allows use in hazardous locations without external safety barriers

• High resolution (16-bit) and wide sensor support reduce need for multiple modules

• Built-in diagnostics help with maintenance and safety

• Strong isolation and channel-level separation improve reliability and reduce interference

Order Now

The WAGO 750-489 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