The Problem: Equipment failure and fire hazards caused by undetected overheating in mill equipment and material handling areas.
Generally, in all processing industries and manufacturing plants, equipment failure due to overheating in mill areas is a very common and critical challenge. The mill basement zones are highly restricted during mill operations, making it impossible for operators to physically monitor and maintain the desired ambient temperature of the motors.
These motors are essential as they supply oil to various systems, and any overheating could lead to severe risks such as fire or major accidents.
Why Traditional Inspection Methods Fall Short
Being the hazardous area, there are limitations with manually inspecting of mill cellar zones. A visual inspection is only noting surface-level damage, by the time the operator sees visible hot-spot or fire, the equipment has already failed, and frequently that leads to an emergency hazard and downtime.
Contact-based temperature measurement and hand-held type Thermal Imagers are impractical in this environment; high surface temperatures, continuous run times, and safety measures make it difficult and dangerous to access physically. What is required is a monitoring method that is continuously monitoring, detects thermal anomalies early on, and generates quantifiable data to develop a maintenance plan.
How Thermal Imaging Detects Overheating in Equipment
To minimise the risk of fire mishappening and to detect early hot spots, it is very essential to ensure proper installation and to conduct continuous monitoring with timely repairs and maintenance.
The most effective method to overcome this situation is by tracking the temperature pattern of the external surface of the mill cellar equipment using thermography. This thermal detail can be used to provide a scheme for re-lining the over-heated areas of the equipment and increases the plant and personnel safety.
In the context of industries, a “Hot Spot” term generally refers to an area or component where the temperature is higher than normal. Due to the flow of oil and continuous running of motors, these junction points get over heated and develop Hot-Spots. Because thermal imaging systems measure infrared radiation generated at the equipment’s surface in the 8-14 μm spectral range, they will be capable of detecting these thermal anomalies.
The operating principle is simple: a thermal camera with unobstructed line-of- sight to the hot-spot area will provide continuous temperature data for the entire equipment’s surface. As the temperature of the industrial equipment increases, hot spots will appear that can be 100-150°C hotter than normal operating temperatures.
Technical Solution: ThermCAM-Series Implementation
Pyrosens’s Mill Area Monitoring System with high-resolution ThermCAM-series integrated with InfraVIEW software provides a precise and reliable temperature measurement solution to enhance plant and personnel safety as it provides continuous thermal monitoring as well as a large panel area for temperature measurement.
ThermCAM-Series thermal cameras are a non-contact, 24*7 temperature measuring instrument with measurement accuracy of ±2% of reading in °C or °K. The sensor functions within a temperature range of -20°C to 1000°C with common configurations of -20°C to 120°C/ 100°C to 1000° C (switchable via our InfraVIEW Software) depending on application.
To acquire more precise information and temperature of a particular region, user can create different types of RoIs in various shapes and sizes for further analysis and reports.
Alarms and indicators can be installed to generate signals if in case shell’s surface temperature goes below the minimum required temperature which is user predefined. By this operator can check the requirement of preheating and the right temperature to fill the kiln. These alert signals can also be received over email and SMS/ E-mail as required by the user.
InfraVIEW Software: Data Management and Analysis
InfraVIEW serves as the link between thermal camera equipment and plant monitoring systems. This Windows-based software supports real-time data acquisition, image processing, and trend analysis which are necessary to support maintenance decisions.
Operational capabilities include:
- Live thermal image display with nine colour palettes for different visualization purposes
- Multiple ROI types with minimum, maximum, and average temperature calculations
- Histogram and trend chart generation based on pattern analysis
- Temperature readout based on the cursor position for detailed investigation
- Configurable alarms for the entire image or specific ROI zones
- Exports data to Excel or other text formats for reporting and archiving
- Ability to interface with plant control systems with OPC/UA protocol.
The software architecture provides a way to connect to PLCs and I/O modules and allows thermal data to flow directly into existing plant monitoring systems. Alarm notifications can be routed via email and SMS, so maintenance teams receive immediate notification of developing problems.
Thermal Camera Connections:
Advantages of the System
- Automatic and non-contact temperature measurement system, reducing human exposure to hazardous zones.
- Early Hot Spot Detection
- Enhanced Equipment Safety & Reliability
- Improved personnel safety and minimizing accident risks
- Prevents plant failure and provides Data-Driven Maintenance Decisions.
- Allows timely relining of refractory.
- Easy interface and flexible according to operation needs.
Preguntas frecuentes
How does a thermal camera help in detecting overheating?
Thermal cameras continuously monitor temperature patterns on equipment surfaces using infrared radiation (in the 8–14 μm range). They identify abnormal heat zones early, helping prevent failures and fire hazards.
What makes the Pyrosens ThermCAM-Series ideal for mill monitoring?
The ThermCAM-Series offers 24×7 non-contact temperature measurement with ±2% accuracy, a wide temperature range (-20°C to 1000°C), multiple ROI options, and real-time alarms. Its integration with InfraVIEW software ensures reliable, automated hot spot detection.
How does InfraVIEW software improve the testing process?
InfraVIEW isn’t just software; it’s the brain behind the lens. It captures, analyses, and stores thermal images and temperature data, provides multiple ROI tools, real-time trending charts, and alarm configurations. Plus, it connects easily to PLCs and I/O modules, streamlining quality control and documentation.
Can thermal monitoring really reduce production costs?
Absolutely. By identifying defects early and mitigating heat-induced failures, thermal monitoring significantly reduces the number of rejected boards, minimizes rework, and safeguards high-value components. Over time, these measures result in substantial cost savings and enhanced product reliability.
Is it difficult to integrate these thermal cameras into existing systems?
The ThermCAM-series cameras are designed for flexible, plug-and-play operation. With support from InfraVIEW software and standard industrial interfaces (like OPC/UA and PLC), they can be easily integrated into existing production lines or R&D setups.
