Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
Wago 750-438 2Di, Namur Ex I
WAGO 750-438 intrinsically safe 2-channel NAMUR digital input module for the WAGO I/O System 750 designed for hazardous area sensor monitoring.
£118.54
Why Choose the WAGO 750-438 NAMUR Digital Input Module?
The WAGO 750-438 is a specialised 2-channel NAMUR digital input module designed for the WAGO I/O System 750. It enables PLCs and industrial controllers to monitor signals from NAMUR proximity sensors and intrinsically safe field devices, making it ideal for process automation and hazardous area monitoring.
The module receives binary signals from sensors operating in Zone 0 and Zone 1 hazardous environments. NAMUR sensors, optocouplers and mechanical contacts can be connected through approved intrinsically safe circuits, allowing reliable signal monitoring within explosive atmospheres. :contentReference
Each sensor connected to the module receives a short-circuit-protected 8.2 V supply, ensuring safe operation and reliable sensor monitoring. Electrical isolation between the system and field levels enhances safety and signal integrity in process automation installations. :contentReference
Key Advantages
- Specialised 2-channel NAMUR digital input module for hazardous environments.
- Compatible with NAMUR proximity sensors and intrinsically safe devices.
- Supports sensor monitoring in Zone 0 and Zone 1 hazardous areas.
- Short-circuit protected 8.2 V sensor supply.
- Integrated diagnostics for reliable sensor monitoring.
- Compact DIN rail module for distributed automation systems.
Key Features
- 2 digital input channels.
- NAMUR signal interface.
- 8.2 V DC sensor supply with short-circuit protection.
- High-side switching input characteristic.
- 3 ms digital input filter.
- 2-wire sensor connection.
- LED indicators for channel status.
- DIN rail mounted modular design.
Hazardous Area Sensor Monitoring
NAMUR sensors are widely used in process industries such as chemical processing, oil and gas production, and pharmaceutical manufacturing. They operate using defined current levels to represent switching states, enabling intrinsically safe monitoring of equipment located in hazardous areas.
The WAGO 750 Series modular I/O platform allows these signals to be integrated directly into distributed PLC networks, enabling safe monitoring of process equipment while maintaining reliable communication with automation controllers.
Typical Applications
- Monitoring NAMUR proximity sensors.
- Process automation and instrumentation systems.
- Oil and gas facilities and refineries.
- Chemical processing plants.
- Industrial safety and hazardous area monitoring systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Number of I/O | 2 | |
|---|---|---|
| Device Type | Digital I/O Module | |
| Digital Inputs | 2 | |
| Signal Type / Function | Digital | |
| Product Series | WAGO I/O System 750 | |
| IP Rating | IP20 | |
| Series | WAGO I/O System 750 | |
| Module type | NAMUR digital input module | |
| Number of inputs | 2 channels | |
| Signal type | NAMUR | |
| Sensor connection | 2 × 2-wire sensors | |
| Sensor supply voltage | 8.2 V DC (short-circuit protected) | |
| Signal current (0) | ≤ 1.2 mA | |
| Signal current (1) | ≥ 2.1 mA | |
| Input filter | approx. 3 ms | |
| Isolation | approx. 300 V between system and field levels | |
| System supply voltage | 5 V DC via internal bus | |
| Field supply voltage | 24 V DC Ex-i supply | |
| 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 | |
| Explosion protection | ATEX / IECEx intrinsically safe Ex i | |
| HS Code | 85389099 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the WAGO 750-438 module used for?
The module monitors signals from NAMUR sensors or intrinsically safe devices and transmits their switching status to a WAGO controller or fieldbus coupler.
How many input channels does the module provide?
The module provides two NAMUR digital input channels for monitoring hazardous area sensors.
Can the module be used in hazardous environments?
The module is designed for intrinsically safe circuits connected to sensors located in hazardous areas (Zone 0 or Zone 1), while the I/O node itself is installed in Zone 2 or a safe area.
What sensor supply voltage is provided?
The module provides a short-circuit protected 8.2 V DC supply for connected NAMUR sensors.
How is the module installed?
The module mounts onto a standard 35 mm DIN rail and uses WAGO CAGE CLAMP® spring terminals for secure vibration-resistant wiring.
Trusted by Automation Engineers
WAGO 750 Series I/O modules are widely used by process automation engineers and system integrators to build safe, reliable distributed control systems across industrial and hazardous environments.
