What is Condition Monitoring?
Condition Monitoring is the continuous or periodic measurement and analysis of the condition of machinery and installations with the aim of detecting failures early and making maintenance predictable. It is a fundamental part of Predictive Maintenance in industrial environments.
By applying condition monitoring, organisations can reduce downtime, save costs and extend equipment lifespan.
🧠 How does Condition Monitoring work?
- Data collection
- Through Sensors that measure vibration, temperature, sound, pressure or wear
- Data transmission
- Wired or wireless (e.g. via IO-Link, Bluetooth, WirelessHART)
- Analysis and interpretation
- In SCADA, the cloud or local Edge Computing systems
- Using thresholds, trends or Machine Learning
- Action and maintenance
Condition Monitoring can be performed in real time or periodically.
🏭 Use in OT networks
- Rotating equipment: pumps, motors, turbines
- Critical assets in production, such as conveyors, mixers or presses
- Monitoring of environmental conditions in cleanrooms or refrigeration plant
- Integration with SCADA or DCS for direct alarming
- Input for maintenance planning via Predictive Maintenance
Ideal for installations where downtime has a major impact on production or safety.
🔍 Condition Monitoring vs. other maintenance strategies
| Type of maintenance | Description | Example |
|---|---|---|
| Corrective maintenance | Repair after failure | Replacing a broken motor |
| Preventive maintenance | Maintenance at fixed intervals | Oil change every six months |
| Condition Monitoring | Maintenance based on real-time condition | Vibration rises → bearing replaced |
| Predictive maintenance | Advanced prediction based on historical data | AI predicts failure within three weeks |
🔐 Security considerations
- Condition monitoring equipment must be integrated into the OT network with:
- Access Control and segmentation
- Encrypted communication (e.g. OPC UA)
- SIEM integration for log analysis
- Protect sensors and edge devices against physical tampering and unauthorised access
Wireless condition monitoring requires extra attention to network and data security.
📌 In summary
Condition monitoring makes maintenance smarter, more efficient and more predictable by continuously monitoring the condition of installations. It is a critical link in the transition to Smart Industry and improves both safety and availability.